Oparin suggests that the first phase in the evolution of life was self-copying molecules in the primordial soup.
Oparin, what do you mean?Oparin thought that coacervates, which are microscopic, spontaneously produced circular aggregates involving lipid molecules held together by electrical charges and which may have been the earliest forms of cells, were the source of life.
What part did Oparin play in the beginning of life?Oparin continued by elaborating on the method by which biomolecules will self-assemble into enormous liquid-like structures he referred to as "complex coacervates"—what we now refer to as hydrodynamic assemblies. He proposed that the development of these protocells was a crucial step in the emergence of life.
To know more about Oparin visit:
https://brainly.com/question/14763174
#SPJ4
The complete question is-
Which is the first step in the emergence of life propose by Oparin?
A. Self-copying molecules ate the primordial soup.
B. Lighting sparked chemical reactions among simple organic compounds in the primordial soup.
C. Molecules began copying themselves, using other molecules in the primordial soup as building blocks.
D. Photosynthesis supplied the oxygen necessary for self-copying molecules to thrive and form membranes.
Does an acid produce protons?.
Here, the ability to donate protons as hydrogen ions is the definition of an acid, whereas the ability to accept protons is the definition of a base.
Because these substances can give or release a hydrogen ion, acids are regarded as proton donors in accordance with the Bronsted-Lowry Theory. Continue reading for the complete response. Because hydrogen only has one proton, it donates that proton to the other substance if the bond holding the hydrogen to the acid is broken but the electron is left behind. A molecule in addition to water is required for an aqueous solution to be acidic or basic. Acidic molecules are those that increase the concentration of free protons in a solution; bases are those that bind to free protons and pull them out of solution to change a solution's pH.
learn more about proton here:
https://brainly.com/question/1252435
#SPJ4
Is albumin a membrane protein?.
Yes albumin is a membrane protein.
Membrane proteins represent about a third of the proteins in living organisms. Based on their structure, there are main three types of membrane proteins, the first one is integral membrane protein that is usually permanently anchored or part of the membrane, the second type is peripheral membrane protein that is only temporarily attached to the lipid bilayer or to other integral proteins, and the third one is lipid-anchored proteins.
Albumin is a single chain protein with low molecular weight which is containing 585 amino acids. It is a simple protein, non-glycosylated polypeptide, hydrophobic patches/cavities, and it also lacks prosthetic groups. Human albumin gene is located on chromosome 4 q (11-22) and mutations of this gene will end in anomalous protein. This gene has around 1691 nucleotide and contains 14 introns and 15 exons.3-6 Albumin structure is composed of three domains which are usually homologous in structural features.
To know more about membrane protein
https://brainly.com/question/28871788
#SPJ4
What is a time temperature control for safety food?.
Answer:It's crucial to understand that some foods are more likely than others to become unsafe to eat when working to prevent foodborne illness. TCS foods, or time/temperature control for safety foods, are those products.
Explanation:
To prevent the growth of bacteria that cause illness, TCS foods need to be kept at specific temperatures and times. Foods that need to be controlled for time and temperature for safety are sometimes referred to as potentially hazardous foods (PHFs), as they can become dangerous if not handled carefully. TCS foods are those that must be properly heated to prevent foodborne illness. Food safety depends on being able to identify TCS foods and handling them correctly.
What are the common TCS foods?
Meat products
Eggs
Fish and shellfish
Dairy
Cream or custard
Cooked vegetables
Potato dishes
Protein-rich plants
Cut leafy greens
Sliced melons and tomatoes
To learn more about TCS, click the link below
https://brainly.com/question/4247127
#SPJ1
calculate the wavelength of the light emitted when an electron in a hydrogen atom makes each of the following transitions.
The wavelength of emitted light is calculated as (a) is 122 nm, (b) is 103 nm, (c) is 486 nm, and for (d) is 434 nm.
What is Rydberg´s equation?The Rydberg formula is mathematical formula for evaluating wavelength of light emitted by electron moving between the energy levels of an atom.
We can find out the wavelength emitted in the hydrogen atom electron transitions using Rydberg´s equation.
using, 1/λ = Rh x ( 1/n₁² - 1/n₂² )
where λ is wavelength;
Rh is Rydberg´s constant 1.097 x 10⁷/m;
n₁, n₂ are the principal quantum numbers
a.) Given, n₁ = 1 and n₂ = 2
1/λ = 1.097 x 10⁷/m x ( 1/1² - 1/2² ) = 8.228 x 10⁶ / m
Taking inverse on both sides :
λ = 1 /8.228 x 10⁶ /m = 122 nm
b.) Given, n₁ = 1 and n₂ = 3
1/λ = 1.097 x 10⁷/m x ( 1/1² - 1/3² ) = 9.751 x 10⁶ / m
λ = 1 /9.751 x 10⁶ /m = 103 nm
c.) Given, n₁ = 2 , n₂ = 4
1/λ = 1.097 x 10⁷/m x ( 1/2² - 1/4² ) = 2.057 x 10⁶ / m
λ = 1 /2.057 x 10⁶ /m = 486 nm
d.) Given, n₁ = 2 , n₂ = 5
1/λ = 1.097 x 10⁷/m x ( 1/2² - 1/5² ) = 2.304 x 10⁶ / m
λ = 1 /2.304 x 10⁶ /m = 434 nm
To know more about Rydberg´s equation, refer
https://brainly.com/question/18555696
#SPJ4
Note: The question on portal is incomplete. Here is the complete question.
Question: Calculate the wavelength of the light emitted when an electron in a hydrogen atom makes each of the following transitions.
a. n = 2 --> n = 1 ?
b. n = 3 --> n = 1 ?
c. n = 4 --> n = 2 ?
d. n = 5 --> n = 2 ?
What are 5 examples of covalent compounds?.
5 examples of covalent compounds hydrogen (H₂), oxygen (O₂), nitrogen (N₂), water (H₂O), and methane(CH₄) due to high ionization energy.
Due to their extremely high ionization energy, some elemental atoms are unable to surrender their electrons. While some people might not be able to gain an electron due to low electron affinity. The only other option is to share electrons so that neither a shortfall nor an excess of electrons exists. Covalent bonds are the next bonds to form in such a configuration. It is important to keep in mind that covalent bonds share already existing electrons amongst the atoms rather than contributing to the production of new ones. Covalently bound elements or compounds cannot conduct electricity because there are no free electrons. Covalent bonds, however, are incredibly strong, which is why they produce the strongest elements or compounds.
Learn more about ionization energy here:
https://brainly.com/question/28385102
#SPJ4
What food hazard must be removed during preparation of raw fish fillet?.
Pin bones which are present in the raw fish fillet is a major food hazard and it needs to be removed during the preparation of food. This makes the food more eatable food the customers.
What are food hazards?Food hazards occur when the food is exposed to hazardous agents that results into contamination of the food. Food hazards are of different types such as nutritional or biotechnology-related.
Food hazards include microbiological hazards which include bacteria, yeasts, and viruses, hemical hazards, physical hazards, and allergens.
Food hazards which should be removed include pin bones in a fish fillet or the complete removal of pits from cherries or olives. Customers will be pleased with the efforts when they don't find any hazard in the food.
Learn more about Food hazards here:
https://brainly.com/question/20533361
#SPJ1
How often should temperature probes be checked?.
The temperature probes should be checked every 12 hours
Accurate temperature measurement is critical for ensuring the food safety, from food processing plants to the restaurants and cafés. There are many types of thermometers that are available for use in the commercial kitchens, the most common of which is the probe thermometer, which is also known as a bi-couple thermometer. Probe thermometers measure the internal temperature of food through a metal stem.
Thermometers are one of the most important tools in your food business's toolbox and they require proper calibration to verify the accuracy of the reading. Thermometer calibration means that there is checking that your thermometer is working correctly, and making adjustments if it is not.
The calibration method and the frequency of calibration depends on the type of thermometer and its intended use. As a general rule, probe thermometers should be calibrated at the start of each shift, in between going from one temperature range to another, after being knocked or dropped and/or after a long storage time. here are two common calibration methods for probe thermometers — hot calibration and cold calibration.
To know more about temperature probes
https://brainly.com/question/21511331
SPJ4
when diffusion has reachedequilibrium, we say thatthenetmovement of the molecules is zero. does this mean these molecules below would stop moving?
When diffusion has reached equilibrium, we say that the net movement of the molecules is zero. But, the small or insignificant number of molecules are still moving.
When diffusion has reached to the equilibrium state, most of the molecules stop moving from higher concentration to lower concentration region. Some negligible molecules are still continue to move due to the Brownian motion.
When net movement of the molecule is zero, the majority of the molecules have stopped moving at that time and not all the molecules. But the small movement of molecules are still occuring.
Therefore, when diffusion has reached equilibrium, we say that the net movement of the molecules is zero. But, the small or insignificant number of molecules are still moving.
To know more about diffusion
https://brainly.com/question/18980315
#SPJ4
Which phrase best defines nuclear fission?.
Nuclear fission refers to the nuclear reaction in which the nucleus of an atom breaks up into lighter nuclei.
What is nuclear fission ?Atoms split apart during nuclear fission, which releases energy. Nuclear fission is used by all nuclear power plants, and uranium atoms are often used in nuclear power plants. A neutron divides an atom of uranium when it collides with it during nuclear fission, releasing a significant quantity of energy in the form of heat and radiation.
A nucleus splits into two roughly equal pieces during nuclear fission, releasing two or three neutrons in the process. It typically happens when a neutron strikes a plutonium 239 or uranium 235 nuclei.
Thus, Nuclear fission is the splitting of an atomic nucleus, according to definition.
To learn more about nuclear fission, follow the link;
https://brainly.com/question/16543258
#SPJ1
a solution is prepared by adding 5.414 g of agcl to 55.625 g of water. what is the mass/volume percent of the resulting solution? the density of water is 1.000 g/ml. assume the density of agcl is 1.000 g/ml. express your response to two digits after the decimal.
Answer:
Explanation:
first work out the mass
5.414 + 55.625 = 61.039
then use the equation volume = mass/ density
volume = 61.039/1.000
volume =61.039
volume = 61.04 (to2 d.p)
I'm not sure what you meant by mass/ volume but if it is mass divided by volume, carry on:
volume - 61.04
mass - 61.04
all right now I understand why it is written mass/volume -
they are the same value!
what changes occur in the blood ph during hyperventilation? match the words in the left column to the appropriate blanks in the sentence on the right. resethelp hyperventilation blank the co2 concentration in the blood, which blank the [h2co3] , which in turn blank the [h3o ] and blank the blood ph.
An increase in pH results from the matching drop in H3O+ concentration.
What does pH stand for?a method for calculating whether basic or acidic something is. The pH scale has numbers 0 through 14. On this scale, an pH level = 7 is regarded as neutral, indicating it is neither acidic nor basic. If the pH is less than 7, it is more acidic, and if the pH is greater than 7, it is more basic.
How does pH formula work?The equation to calculate ph pH of such an aqueous solution on the basis of hydroxide ion concentration is: pH=−log[H3O+] pOH: The following equation can be used to calculate an aqueous solution's pOH, which is correlated with pH: pOH=−log[OH−].
To know more about ph visit;
https://brainly.com/question/15289741
#SPJ4
kauffman (2004) discusses several reasons why students with emotional and behavioral disorders are being under-identified in schools. which of the following is not one of those reasons?
One of those explanations is that students are not demonstrating emotional and behavioral problems at school.
When compared to other disability groups, students with emotional and behavioral problems (EBD) are more likely to fail academically and have bad post-school outcomes. To create resilience, it is critical to discover how to boost protective factors for students with EBD.
Behavioral disorders are characterized by a pattern of disruptive behaviors in children that lasts at least six months and causes issues at school, at home, and in social interactions. Almost everyone exhibits some of these behaviors on occasion, but behavior disorders are more problematic.
To know more about behavioral disorders visit
https://brainly.com/question/939184
#SPJ4
Argon is a noble gas.
Explain why no product is formed when magnesium and argon are heated together.
[2 mark
Argon is a noble gas. argon no product is formed when magnesium and argon are heated together because argon is extremely stable.
The argon is a noble gas. noble gases are extremely stable. the noble gases have their octet complete and follow the octet rule. the outermost shell in the argon atom have the eight electron that eight valence electrons and it is fulfilling the octet rule. this means they have very little little tendency to gain or loss the electrons and they are very unreactive.
Thus, Argon is a noble gas. argon no product is formed when magnesium and argon are heated together because argon is extremely stable.
To learn more about argon here
https://brainly.com/question/3125326
#SPJ1
Write a balanced half-reaction describing the reduction of aqueous vanadium(v) cations to solid vanadium.
Thale balanced half-reaction of aqueous Vanadium to solid Vanadium is
V⁵⁺ + 3e- → V(s)
The reduction of vanadium(V) cations to solid vanadium involve the transfer of three electrons to vanadium cations, leading to a net reduction of the cations. Vanadium is a transition metal and is located in the fifth period of the periodic table.
Due to its electron configuration, vanadium has five valence electrons and can form five covalent bonds with other atoms. In the aqueous form, vanadium(V) cations have a charge of +5, which is due to the five electrons that it has lost.
In order for the reduction of vanadium(V) cations to solid vanadium to take place, three electrons must be transferred to the vanadium cations. This results in a balanced half-reaction, which can be written as
V⁵⁺ + 3e- → V(s)
The three electrons that are donated to the vanadium cations reduce the cations from a +5 charge to a neutral charge, resulting in the formation of solid vanadium.
The reduction of vanadium(V) cations to solid vanadium is an important process in many industrial and chemical applications.
Vanadium is often used to produce alloys and is used in the production of steel. It is also used as a catalyst in the production of sulfuric acid and is used in the production of dyes and inks.
The reduction of vanadium(V) cations to solid vanadium are also important in biological systems, as vanadium is an essential trace element for some organisms.
To know more about redox reactions click below:
https://brainly.com/question/21851295
#SPJ4
a 30.0g sample of barium at 15.0 c is warmed to 25.0 c. how much energy is needed to warm the metal?
(CBa = 0.436 J/G x C)
q = [?] J
The amount of heat energy needed to warm the metal of mass 30.0 g is 130.8 J
How do I determine the amount of heat energy needed?We'll begin by calculating the change in the temperature of the metal. This can be obtained as follow:
Initial temperature of metal (T₁) = 15.0 ºCFinal temperature of metal (T₂) = 25.0 ºCChange in temperature (ΔT) = ?ΔT = T₂ - T₁
ΔT = 25 - 15
ΔT = 10 ºC
Finally, we shall determine the heat energy needed to warm the metal. This is shown below:
Mass of metal (M) = 30.0 gSpecific heat capacity of water (C) = 0.436 J/gºCChange in temperature (ΔT) = 10 ºC Heat energy (Q) =?Q = MCΔT
Q = 30 × 0.436 × 10
Q = 130.8 J
Thus, the heat energy needed is 130.8 J
Learn more about heat energy:
https://brainly.com/question/28160267
#SPJ1
Answer:
130.8
Explanation:
Give the guy above me brainliest, he deserves it!
FILL IN THE BLANK. The following thermochemical equation is for the reaction of carbon monoxide(g) with water(l) to form carbon dioxide(g) and hydrogen(g). CO(g) + H2O(l) CO2(g) + H2(g)H = 2.80 kJWhen 9.83 grams of carbon monoxide(g) react with excess water(l),_______________ kJ of energy are___________ ( absorbed or evolved
Energy is absorbed when 9.83 grams of carbon monoxide (g) react with extra water (l).
What does a scientific energy mean?The capacity to exert a force that causes an item to move is what is meant by the definition of energy as the "power to accomplish work."Energy is just the force that propels objects, regardless of how ambiguous the term may be. The two types of energy are kinetic and potential energy.
Who established the term "energy"?The term "energy" was initially used in the field of physics by Thomas Young (1773–1829), illustrated on the right, but it did not catch on
.To demonstrate that light is a wave, Thomas Young later utilized interference experiments.
To know more about energy visit :
https://brainly.com/question/11399976
#SPJ4
What types of materials are best for preventing heat transfer through convection?.
Making small bubbles around the jar using insulators with plenty of air pockets, such bubble wrap, cloth, or wool, is one method of decreasing convection.
A material? What would you mean by that?The term "material" describes something that is used to create another item. Cloth or any other item formed of matter that exists throughout the physical world can be referred to as material. As just a noun and also an adjective, "material" has several more meanings.
What kinds of materials are there?Metals, polymers, plus ceramics are the three main categories of materials. Steel, fabric, and ceramics are a few examples of them. These classes often have quite distinct origins, traits, and uses.
To know more about material visit:
https://brainly.com/question/28646672
#SPJ4
Does lithium lose 1 electron?.
Yes lithium lose 1 electron in order to get stable electronic configuration
What is Electron ?Negatively charged subatomic particles called electrons can be free or bound to an atom.
Each lithium atom loses an electron to become a Li+ cation as it creates chemical compounds with other elements. The anions in ionic compounds that are negatively charged are therefore attracted to these. There are several applications for lithium compounds.In order to adopt the electron configuration of helium, the closest noble gas, lithium has a tendency to lose one electron, leaving it with two valence electrons. Atoms can fulfil the octet rule in two different ways. By trading valence electrons with other atoms, for example.Learn more about Electron here:
https://brainly.com/question/860094
#SPJ4
A solution is prepared at 25C that is initially 0.075M in chlorous acid (HClO2), a weak acid with Ka= 1.1 x 10^-2, and 0.34M in potassium chloride (KClO2). Calc the pH of the solution. Round your answer to 2 decimal places.
The - pH is 2.6 .You must know the hydronium ion concentration in moles per liter in order to calculate the pH of an aqueous solution (molarity).
How do you determine an acid-base solution's pH?The pH of Acids and Bases
For an acidic solution, [H3O+] > [OH-]
[H3O+] = [OH-] is the formula for a neutral solution.
For the fundamental answer: [H3O+] [OH-]
You must know the hydronium ion concentration in moles per liter in order to calculate the pH of an aqueous solution (molarity).
The formula pH = - log [H3O+] is then used to determine the pH.
You must know the hydronium ion concentration in moles per liter in order to calculate the pH of an aqueous solution (molarity). The formula pH = - log [H3O+] is then used to determine the pH.
ie, 0.075 - 0.34 = - 0.265.
-pH = 2.6.
To learn more about pH refer to:
https://brainly.com/question/172153
#SPJ4
How do electromagnetic waves transfer energy without a medium?.
Since em waves are not conveyed by that of the vibration of electrons, they do not need a medium to travel. Electrical and magnetic fields, that could exist anywhere, oscillate, creating waves.
What do you mean by Electromagnetic waves?The oscillations here between electrostatic potential and a magnetic field produce waves known as electromagnetic waves, or EM waves. In other words, magnetism fields oscillate to form electromagnetic (EM) waves.
Electromagnetic waves, where are they?In contrast to wave propagation, electromagnetism waves can travel without a medium. This implies that microwaves can pass not only through stationary surfaces like air and rock but also through empty space.
To know more about Electromagnetic waves visit:
brainly.com/question/2995167
#SPJ4
A balloon i filled to a volume of 1. 50 L with 2. 50 mole of ga at 25 °C. With preure and temperature held contant, what will be the volume of the balloon if 1. 40 mole of ga are added?
The new volume of balloon is 2.34 L, if the pressure and temperature held constant. Calculating by Ideal gas law equation.
How to calculate Ideal gas law equation ?The equation of state for a fictitious perfect gas is known as the ideal gas law, sometimes known as the generic gas equation. Although it has some restrictions, it is a good approximation of the behaviour of numerous gases under various circumstances.An amount of gas's pressure, volume, and temperature all affect its condition. These are simply related in two ways by the equation as it is used today. The kelvin is the proper SI unit to use for expressing the temperature in the equation of state because it is an absolute temperature.The properties of an ideal gas are all summarized in one formula of the form:
pV = nRT
p is the pressure of the gas
V is the volume of the gas
n is the amount of substance
R is the ideal gas constant
T is the temperature of the gas
Pressure in the balloon :
p = nRT/v
= 2.5 mole *25 C *8.3145 / 1. 50L
= 4131595 pa
New Volume of balloon :
v = nRT/p
= 3.9 mole * 25 C* 8.3145 / 4131595 pa
= 2.34 L
The volume of balloon is 2.34 L.
To learn more about Ideal gas law refer :
https://brainly.com/question/12400719
#SPJ4
watch the video on the explosive decomposition of nitrogen triiodide, ni3 , and determine which of the following statements are correct.
This enthalpy ion NI3 is higher than just the enthalpy of breakdown products, which is the right assertion.
What does biology mean by decomposition?Dead creatures are broken down into their basic chemicals through the process of decomposition by bacteria and fungus. The cycle can be completed by plants absorbing and using these substances once more. Because of how they decompose dead organic stuff, decomposing bacteria and fungus are referred to as saprophytic.
With an example, describe the decomposition process.Documenting all of the semi and tasks that build up a higher-level work processes is a method known as process decomposition. Consider a task that might appear to be straightforward, such as processing an invoice.
To know more about Decomposition visit:
https://brainly.com/question/8009068
#SPJ4
The complete question is-
Watch The Video On The Explosive Decomposition Of Nitrogen Triiodide, NI3, And Determine Which Of The Following statements are correct.
(a) The enthalpy of NI3 is greater than the enthalpy of the decomposition products.
(b) The decomposition of NI3 is an exothermic reaction.
(c) In this reaction, iodine is produced as one of the products.
(d) NI3 is a highly stable compound when it is dry.
(e) In this reaction, heat is absorbed from the surroundings.
The terrestrial planets are made almost entirely of elements heavier than hydrogen and helium. According to modern science, where did these elements come from?.
The terrestrial planets are made almost entirely of elements heavier than hydrogen and helium. According to modern science, these elements come from : They produce by the stars that are lived and dies before our solar system was born.
The all elements Havier than hydrogen is created through a nuclear fusion in core of the star. the star fuses hydrogen into the helium. and the process so on goes in the periodic table. the terrestrial planets are made almost entirely elements.
Thus, The terrestrial planets are made almost entirely of elements heavier than hydrogen and helium. According to modern science, these elements come from : They produce by the stars that are lived and dies before our solar system was born.
To learn more about terrestrial planet here
https://brainly.com/question/13449023
#SPJ1
(Representation) Write the balanced chemical equation for the reaction observed in the first part of this experiment: 3 . (Manipulation) Assuming that all the baking soda from your balloon reacted, calculate how many moles of carbon dioxide gas would be formed: (Manipulation) Assuming that all of the acetic acid (assume 5% by mass with a density of 1.006 glml) from your Erlenmeyer flask reacted, calculate how many moles of carbon dioxide gas would be formed. 5. (Analysis) Using your calculations, identify the limiting reactant of your reaction and determine the maximum amount (in moles) of carbon dioxide that could be produced. (Manipulation) Using your calculated number of moles of carbon dioxide from Question 5, the atmospheric pressure, the vapor pressure of water at your room temperature, and your room temperature value, calculate the expected volume of the balloon:
2) Equation for a Balanced Chemical:
CH₃COOH + NaHCO₃ ⇒ CH₃COONa + H₂O + CO₂↑
3) The limiting substance in this situation is NaHCO3. CO2 production amounts to 0.0238 moles.
4) 2.513 moles of acetic acid (vinegar) produce 2.513 moles of carbon dioxide (CO2).
5) Baking soda and the maximum amount of CO2 that can be created in 0.0238 moles are the constraints.
2) Balanced Chemical Equation:
CH₃COOH + NaHCO₃ ⇒ CH₃COONa + H₂O + CO₂↑
Vinegar Baking Sodium Acetate
(Acetic (Sodium
Acid) Bicarbonate)
3) 150 ml Vinegar = 150 ml * density in g/ml
150 ml vinegar = 150 ml * 1.006 g/ml
150 ml vinegar = 150.9 gm of Vinegar
Moles of vinegar = Given mass / Atomic mass
Moles of Vinegar = 150.9 / 60.05 = 2.513 mole
Moles of Baking Soda = 2 / 84 = 0.0238
CH₃COOH + NaHCO₃ ⇒ CH₃COONa + H₂O + CO₂↑
1 mole 1 mole 1 mole
2.513 0.0238 0.0238
NaHCO3 serves as the limiting agent here. It produces 0.0238 moles of CO2.
4) The limiting agent is CH3COOH if 100% of the acetic acid is reacted. Thus, 2.513 moles of vinegar (acetic acid) result in 2.513 moles of CO2.
5) My calculations show that the limiting factors are baking soda and the maximum amount of CO2 that may be produced in 0.0238 moles.
To know more about Moles, refer to this link:
https://brainly.com/question/14676971
#SPJ4
what term refers to the amount of a substance a person ingests, inhales, or absorbs through the skin?
Dose refers to the amount of a substance a person ingests, inhales, or absorbs through the skin.
What is a dose?A dosage is the quantity of a drug that is ingested or comes into contact with a person. Body weight is a crucial factor to consider when assessing a dose. A youngster, who typically weighs less than an adult, may have more effects if exposed to the same amount of chemical.Children are typically given smaller doses of medications than adults, such as aspirin, because an adult dose would be inappropriate for a child's size.The likelihood of adverse health effects increases with the amount of a substance to which a person is exposed. A drug that is generally safe in small doses might be hazardous in large ones.For instance, two aspirin tablets can ease a headache, but consuming the entire bottle of aspirin can result in stomach ache.To learn more about medications, refer:
https://brainly.com/question/28605057
#SPJ4
What is the purpose of coefficients in a chemical equation quizlet?.
In a chemical equation, coefficients serve the function of displaying the ratio in which reactants and products interact to produce a chemical reaction.
What does the word coefficient mean in science?In mathematics and science, coefficients are constant expressions that relate to a product's properties. For instance, the coefficient is the only constant in the friction calculation equation.
The definitions of coefficient and subscriptCoefficients are necessary for balancing equations. They are given a number before compounds or elements. Subscripts, which come after an element's symbol, are used to indicate the element's number. If an element symbol is followed by a subscript, the "2" in H2O stands in for two H atoms.
To know more about Coefficient visit:
https://brainly.com/question/28335905
#SPJ4
1.28 how many moles of permanganate are required to oxidize one mole of toluene to benzoic acid? (use and protons to balance the equation.)
Two moles of permanganate are required to oxidize one mole of toluene to benzoic acid.
Toluene is oxidized to benzoic acid by using alcoholic potassium permanganate. In neutral medium hydroxide ions are produced. This reduces cost of adding acid or base.
The following reaction shows the result
C6H5CH3 + 2MnO3 = C6H5COO- + 2MnO2 + H2O +OH-
Alcohol and KMnO4 are both polar and homogeneous to each other. Toluene and alcohol are homogeneous as they are organic. Thus, in alcohol the rate of reaction between toluene and KMnO4 is higher.
Learn more about toluene here https://brainly.com/question/13403073
#SPJ4
on a global scale, which of the following most directly led to the expansion of the trade between europe and asia in the time period reflected in the chart? responses
On a global scale, the one that most directly led to the expansion of the trade between Europe and Asia is the shifting balance of trade as a result of the American silver circulation.
Silver was the most sought-after good. Its trade was the first global trade network and remained to dominate the network for thousands of years.
The discovery of large amounts of American silver became very important as the new global currency. It enabled massive economic growth in Europe, allowing them to buy Asian imports. In Asia, silver currency replaced paper currency, further enveloping Asia in the world economy.
Learn more about silver currency at https://brainly.com/question/23335844
#SPJ4
what is the free energy change when 1 mole of cu and 1 mole of au mix isothermally at 1150 k? assume that cu and au form an ideal solution.
At high temperatures, Cu (atomic proportion) forms a solid solution; yet, at low temperatures, CuAu develops as a compound.
What does the word "mole" mean?The International System of Units uses the mole (symbol: mol) as the unit of material quantity.How many elementary entities of a particular substance are present in an object or sample is determined by the quantity of that material.It is specified that the mole contains exactly 6.022140761023 elementary entities.A mole is the mass of a substance made up of the same number of fundamental units.
The symbol for the unit is mol.
One mole contains 6.022 × 1023 atoms.
Helium makes up 4.3 × 1024 of our atoms.
The number of moles formula is denoted by the following expression:
To learn more about Mole refer to:
https://brainly.com/question/15356425
#SPJ4
Consider the thioformaldehyde (CH2S molecule. What is the central atom? Enter its chemical symbol How many lone pairs are around the central atom? What is the ideal angle between the carbon-hydrogen bonds? 。 Compared to the ideal angle, you would expect the actual angle between the carbon-hydrogen bonds to be (choose one)
According to the given statement 120° is the ideal angle between the carbon-hydrogen bonds.
What is the central atom?The center atom in a molecular formula is often the atom the with lowest subscript and the largest bonding potential. The least electronegative element is normally the central atom when all the atoms typically make the same number of bonds.
What cannot possibly be a core atom?Since hydrogen can have two number of valence electrons and hence can only make one bond, it will never be the center atom. Larger molecules have multiple "central" atoms that are joined to by numerous additional atoms. As explained in the sections before, it is possible to determine how each core atom's bonds will be arranged.
To know more about Central atom visit:
https://brainly.com/question/29422259
#SPJ4
