25.0 ml of a 0.188 m h2so4 solution must be neutralized with 46.3 ML (in ml) of a 0.203 m sodium hydroxide solution. In the process of making chlorine, sodium hydroxide is created as a byproduct.
It is crystalline, colourless, and solid in its purest form. These sodium cations and hydroxide anions make up this extremely water-soluble molecule known as sodium hydroxide. Chemical element chlorine has the symbol Cl and atomic number 17. It is the second-lightest halogen, and although it is between fluorine and bromine on the periodic table, most of its properties fall somewhere in the middle. Is called chlorine.
H2SO4 millimoles equal 0.188*25.0 = 4.70mmol NAOH millimoles equal 4.70*(2/1) = 9.40mmol in a volume of 0.203M NAOH equals 9.40*(1/0.203) = 46.3 ML.
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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.
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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.
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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.
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(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.
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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.
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an unknown compound is analyzed and found to have the molecular formula c6h12o2. the ir spectrum of the compound is provided. identify the compound from the following selection of isomeric structures.
Because the structure of compound a would be solid and dense enough for an antibacterial form, it is depicted in figure a.
The definition of structural isomerism
Isomers are molecules with the exact same structural structure but a distinct atomic configuration. That rules out any alternative configurations that are merely the result of the molecule spinning overall or rotating around specific bonds.
What constitutes a structural isomerism example?
When two molecules have the same molecular formula but distinct atomic arrangements or bonds, they are said to be structural isomers. For instance, butane and isobutane have the same number of carbon (C) atoms and hydrogen (H) atoms, which means their molecular formulas are the same.
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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.
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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:
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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
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Why do clothes dry faster in the sun?.
Clothes are dried by evaporation due to heat from sunlight. In a line, clothes get sunlight for whole day, and due to heat from sun, rate of evaporation increases and clothes dry quickly.
What is evaporation ?On the surface of a liquid as it transitions into the gas phase, evaporation is a type of vaporisation that takes place. When the rate of evaporation of water is affected by humidity, for example, a high concentration of the evaporating substance in the surrounding gas significantly slows down evaporation.
Water from any body of water on the surface of the earth evaporates into the air as part of the water cycle. When this water cools, it produces rain. Evaporation is the reason for the steam that forms in a hot cup of tea or coffee.Learn more about Evaporation here:
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a solution contains 0.021 m cl- and 0.017 m i-. a solution containing copper (i) ions is added to selectively precipitate one of the ions. at what concentration of copper (i) ion will a precipitate begin to form? what is the identity of the precipitate? ksp(cucl)
Concentration of copper (I) is 3.00 × 10⁻¹⁰ which is concentration is low that's why Copper (I) iodide would precipitate first.
Iodate and iodide are they the same thing?Iodide and iodate, often as the potassium salt, are the two iodine compounds that is used to iodize salt. Iodate is preferable for tropical damp circumstances since it is less soluble and even more stable than iodide. Iodized salt is the common term used to describe both.
Briefing:
[tex]\begin{aligned}&K_{s p} \text { of } \mathrm{CuCl}=1.0 \times 10^{-6} \\&K_{s p} \text { of } \mathrm{Cul}=5.1 \times 10^{-12}\end{aligned}[/tex]
For CuCl[tex]\\$$K_{s p}=\left[\mathrm{Cu}^{+}\right]\left[\mathrm{Cl}^{-}\right]$$[/tex]
Applying a value here on following equation:[tex]\begin{aligned}&1.0 \times 10^{-6}=\left[C u^{+}\right] \times 0.021 \\&{\left[C u^{+}\right]=\frac{1.0 \times 10^{-6}}{0.021}=4.76 \times 10^{-5} \mathrm{M}}\end{aligned}[/tex]
Concentration of Copper(I) ion [tex]4.76 \times 10^{-5} \mathrm{M}[/tex][tex]\begin{aligned}&5.1 \times 10^{-12}=\left[C u^{+}\right] \times 0.017 \\&{\left[C u^{+}\right]=\frac{5.1 \times 10^{-12}}{0.017}=3.00 \times 10^{-10} M}\end{aligned}[/tex]
Concentration of Copper(I) ion [tex]3.00 \times 10^{-10} M[/tex]We require a lower concentration for copper (I) ions for both the precipitated or copper (I) ions. The first substance to precipitate is copper (I) iodide.
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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.
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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:
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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.
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three different fatty acid molecules react with glycerol to form this triacylglycerol. of these three fatty acids, draw the smallest one. include all hydrogen atoms.
Three different fatty acid molecules react with glycerol to form this triacylglycerol and it has 4 fused carbon rings and it is steroid.
What are fatty acids?Fatty acids are important components of plant, animal and microbial lipids (fat-soluble components of living cells). In general, fatty acids consist of a linear chain with an even number of carbon atoms, with a hydrogen atom along the length of the chain and at one end of the chain, and a carboxyl group (-COOH) at the other end. It is this carboxyl group that makes it an acid (carboxylic acid). If the carbon-carbon bonds are all single bonds, the acid is saturated. If one of the bonds is double or triple, the acid is unsaturated and highly reactive. Some fatty acids have branched chains. Others contain ring structures (eg prostaglandins). Fatty acids do not occur in the free state in nature. They usually exist in combination with glycerol (alcohol) in the form of triglycerides.What are molecules?A molecule is two or more atoms held together by chemical bonds that form the smallest unit of matter that holds its composition and properties. Molecules form the basis of chemistry. Molecules are marked with element symbols and atomic number subscripts.Can learn more about Fatty acids from: https://brainly.com/question/27960389
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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.
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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.
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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.
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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.
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explain in detail how light energy is connected to carbon dioxide consumption by a plant at the molecular level.
Light energy is connected to carbon dioxide consumption by a plant at the molecular level through the process of photosynthesis.
How is light energy connected to carbon dioxide consumption at the molecular level?Light energy is transformed into chemical energy in the form of sugars through a process called photosynthesis. Water and carbon dioxide are converted into glucose (or other sugars) in a process that is fuelled by light energy, with oxygen being released as a by product. The glucose molecules offer two essential resources to organisms:.Those resources include both energy and fixed organic carbon.In addition to removing significant amounts of carbon dioxide from the atmosphere, photosynthetic organisms also convert carbon atoms into organic molecules. They use light to manufacture sugars, which they then release into ecosystems as chemical energy and fixed carbon.
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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!
Q14: Calculate the amount of sodium chloride, NaCl, in 55.0cm³ concentration 0.5mol/dm³.
The concentration terms are molality, normality and mole fraction. Molarity can be used to find out the ionic strength of any solution. Therefore, the mass of NaCl is 1.46g.
What is molarity?Molarity can be calculated by dividing number of moles of solute by volume of solution in litre. Molarity is affected by temperature. Its unit is mole/liter. It measure the concentration of any solute in a solution.
Mathematically,
Molarity= number of moles of solute/volume of solution in litre (1)
Where,
moles= given weight /by molecular weight
= w/ 58.44 g/mol
Molarity=0.5mol/dm³
Volume=55.0cm³ =0.05dm³=0.05L
Substituting values in equation 1
0.5=(w/58.440)/(0.05L)
w=1.46g
Therefore, the mass of NaCl is 1.46g.
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a buffer with a ph of 9.85 contains ch3nh2 and ch3nh3cl in water. what can you conclude about the relative concentrations of ch3nh2 and ch3nh3cl in this buffer? for ch3nh2, pkb
The solution will be a basic buffer.
The pH should be within 1 pH unit of the weak acid's pKa. This means that the acid and base concentrations should not differ by more than 10-fold. A buffer is a solution that can withstand changes in pH due to the addition of acid or base components. It can neutralize small amounts of added acids or bases and keep the pH of the solution relatively stable.
This is important for processes and reactions that require a specific stable pH range. Buffers maintain a stable pH by neutralizing added acids or bases. They are composed of weak acids and their conjugate bases, which exchange protons and hydroxide ions to form water. The Henderson-Hasselbalch equation describes pH as a function of PKA and the ratio of base concentration to acid concentration.
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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.
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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.
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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.
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.
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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−].
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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.
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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
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Answer:
130.8
Explanation:
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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.
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