Most experimental designs measures solely one or two variables at a time. Any different factor, which could probably impact the results, should be efficaciously controlled.
Why is it vital to restriction the number of variables in an experiment?Controlling variables is important due to the fact mild variations in the experimental set-up ought to strongly have an effect on the result being measured.
Can an scan have extra than one controlled variable explain?Controlled variables are portions that a scientist needs to remain constant. If they had been altered, it would appreciably have an effect on the experiment's results. Most experiments have extra than one controlled variable.
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How many atoms of gold (Au) are in a US Eagle gold bullion coin with a mass of 31.3g Au?
Step 1) no way to go from mass to atoms, so convert mass to moles using molar mass or grams in 1 mol of Au (from the Periodic table) as the conversion factor.
Step 2) Convert moles to atoms using Avogadro’s conversion factor
There are 5 atοms οf gοld (Au) are in a US Eagle gοld bulliοn cοin with a mass οf 31.3g Au.
What is atοm?A substance's tiniest cοmpοnent that cannοt be destrοyed chemically. A prοtοn (a pοsitive particle) and a neutrοn (a neutral particle) make up the nucleus (center) οf each atοm (particles with nο charge). The nucleus is filled with negative electrοns. Chemical reactiοns cannοt generate οr destrοy atοms since they are indivisible particles.
What is mass?The amοunt οf matter in a bοdy is referred tο as its mass. The kilοgrams is the kilοgrams, which is the SI unit οf mass (kg). Mass is defined as: Mass = Density /Vοlume.
Therefοre, There are 5 atοms οf gοld (Au) are in a US Eagle gοld bulliοn cοin with a mass οf 31.3g Au.
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why does direction matter please i beg you to help me its in science ill give you brainliest if the answer is right
In science, direction can be important because it can affect the outcome of an experiment.
What is direction?Direction is the process of guiding or instructing someone to a particular destination or goal. It can include giving instructions, leading and pointing out a path to follow, or providing assistance to help a person or group reach a certain destination. Direction can be provided verbally or using visual cues, such as maps or diagrams. It is an essential skill for many professions, such as teaching, management and leadership roles. Direction can also help with problem solving, as it can help to identify the steps needed to reach a desired result.
For example, if you are conducting a test on the effects of wind on a plant, the direction of the wind can have a significant effect on the results of the experiment. If the wind is blowing from the north, it will have a different impact on the plant than if it was blowing from the south. Direction can also be important in physics when looking at the movement of objects, or when understanding the forces that are acting on them.
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Given the stock concentration of h2so4 is 15 m, describe how you would create 100 ml of the 3. 0 m h2s04 needed in this lab
To create 100 ml of 3.0 M H2SO4 solution from 15 M stock solution, measure 20 ml of stock concentration and dilute it with distilled water to reach a final volume of 100 ml.
By using the following formula, we can create 100 ml of 3.0 M H2SO4 from a stock concentration of 15 M H2SO4
C1V1 = C2V2
where C1 is the initial concentration,
V1 is the initial volume,
C2 is the final concentration, and V2 is the final volume.
Using this formula, we can calculate the amount of stock solution needed to prepare the desired solution as follows:
C1V1 = C2V2
15 M x V1 = 3.0 M x 100 ml
V1 = (3.0 M x 100 ml) / 15 M
V1 = 20 ml
Hence, to create 100 ml of 3.0 M H2SO4 from a stock concentration of 15 M H2SO4, you need to measure 20 ml of the stock solution and then add enough water to bring the total volume to 100 ml.
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Use the reaction to answer the question.
N₂(g) + 3H₂(g) + 2NH3(g) + energy
When this reaction has reached equilibrium, how will it respond when the temperature of the system increases?
(1 point)
O The concentration of N₂ will decrease.
O The concentration of H₂ will decrease.
O The equilibrium will shift to the left.
O The equilibrium will shift to the right.
The equilibrium will respond to an increased temperature of the system by shifting to the left. Option 3.
Le Charterlier's principle
According to Le Chatelier's principle, when a system at equilibrium is subjected to a stress, the system will respond in a way that tends to counteract the stress and reestablish equilibrium. In this case, an increase in temperature is a stress that will disrupt the equilibrium.
According to the reaction equation, the forward reaction is exothermic, meaning that heat is released when the reaction proceeds in the forward direction. Therefore, an increase in temperature will cause the equilibrium to shift in the direction that absorbs heat, which is the reverse reaction.
To counteract the increase in temperature, the equilibrium will shift to the left, favoring the reactants. This means that the concentration of N₂ and H₂ will increase, while the concentration of NH₃ will decrease. Therefore, the correct answer is: The equilibrium will shift to the left.
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Do you think that everyone in your community has access to adequate sanitation? Why or why not?
e.
Which two statements are true about this chemical reaction that forms acid
rain?
2NO₂ + H₂O
0-N=0 H-O-H
0-N=0
→HNO₂ +
HNO HON=0
HNO,
O
A. The bonds that form are between N and O in NO₂ and between H
and O in H₂O.
B. The bonds that break are between N and O in HNO2 and between
O and H in HNO3.
C. The bonds that form are between N and O in HNO2 and between
O and H in HNO3.
D. The bonds that break are between N and O in NO₂ and between H
and O in H₂O.
The two statement which are true about acid rain with chemical changes are the bonds that form are between N and O in HNO₂ and between O and H in HNO₃.The bonds that break are between N and O in NO₂ and between H and O in H₂O.
What are chemical changes?Chemical changes are defined as changes which occur when a substance combines with another substance to form a new substance.Alternatively, when a substance breaks down or decomposes to give new substances it is also considered to be a chemical change.
There are several characteristics of chemical changes like change in color, change in state , change in odor and change in composition . During chemical change there is also formation of precipitate an insoluble mass of substance or even evolution of gases.
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Honors Calorimetry Activity
In this activity, you will plan and conduct an investigation on energy transfers between two liquids of different temperatures.
Objective: Plan and then conduct an investigation on energy transfer between two liquids of different temperatures.
Materials: thermometer, two foam cups, measuring cup from your kitchen, hot water, and one liquid selected from the chart below and placed in your refrigerator for one or more hours before you begin your activity
Liquid
Heat capacity
(J/(g oC))
Density
Grape juice
3.6
1.06 g/mL
Whole milk
3.77
1.04 g/mL
Orange juice
3.73
1.05 g/mL
Tomato juice
3.98
1.03 g/mL
Caution: You will be working with hot water in this lab. Be very careful as you pour so you do not burn yourself. Also, be sure to read your thermometer carefully. The numbers on the thermometer scale refer to the line under the number. Lastly, it's important to perform certain steps quickly and efficiently to minimize heat loss to the surroundings.
Procedure:
Read the entire procedure before you begin the experiment.
Use the metric scale on your measuring cup to measure 237 mL (1 cup) of your selected refrigerated liquid. Pour this liquid into one of the foam cups.
Now, get the hottest water possible from the faucet on your sink. Use the metric scale on your measuring cup to measure 237 mL (1 cup) of hot water. Pour this water into the other foam cup.
Quickly measure the temperature of the cold liquid and the hot water. Record the temperatures in a data table.
Very quickly pour the hot water into the cold liquid. Place the thermometer in the
mixture. Invert the cup that contained the cold liquid over the cup containing the water mixture.
Keeping the bulb of the thermometer in the liquid, check the temperature reading about every 20 seconds until the temperature stabilizes. Keep the lid (inverted cup) in place as much as possible. When the temperature is constant (this will happen very quickly), record this temperature in a data table as the final temperature.
Data:
Create a data table of for your measurements and calculations. Two measurements are provided for you. Record the other measurements needed for this activity.
Volume of cold liquid
237 mL (1 cup)
Volume of hot water
237 mL (1 cup)
The energy transferred was 4,233.6 joules and the average temperature of the mixture was 50°C.
What is mixture?Mixture is a combination of two or more substances that are not chemically bonded together and can be separated easily through physical means. The components of a mixture might be solids, liquid, or gases. In a mixture, the substances maintain their own physical and chemical properties. Examples of mixtures include air, water, salad dressing, and trail mix. Both homogeneous and heterogeneous mixtures exist.
Temperature of cold liquid 10°C
Temperature of hot water 90°C
Temperature of mixture 40°C
Calculations: Using the data collected, calculate the amount of energy transferred and the average temperature of the mixture using the following equations:
Energy Transferred = Heat Capacity x Mass x Change in Temperature
Average Temperature of Mixture = (Initial Temperature of Cold Liquid
Initial Temperature of Hot Water) / 2
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When a person runs, how is
the energy transformed?
A. The chemical energy in their food is
transformed into sound and thermal energy.
B. The mechanical energy in their food is
transformed into electromagnetic and
thermal energy.
C. The chemical energy in their food is
transformed into mechanical and thermal
energy.
The energy can neither be created nor be destroyed. But it can be converted from one form to another. When a person runs, The chemical energy in their food is transformed into mechanical and thermal energy. The correct option is C.
What is mechanical energy?The mechanical energy of an object is the sum of the potential and kinetic energies which is used to do a particular work. It represents the energy of an object due to its motion or position or both.
The body takes chemical energy in the form of food. when a person runs this chemical energy is utilized by our body and converted into kinetic energy (Mechanical). The body get heated by running which then releases thermal energy.
Thus the correct option is C.
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wHAT HAPPENS IF THE CIRCUIT IS LEFT OPEN FOR A VERY LONG TIME
Answer:
please make me brainalist and keep smiling dude I hope helped you
please thank all of my answer
Explanation:
If the electric circuit is left open then there will be an incomplete path to drift the electron in that case no drift velocity of the electron is observed, hence there is no flow of current in the circuit.Which of the following statements is true about dilute and concentrated solutions?
Concentrated solutions have a higher solvent-to-solute ratio than dilute
solutions.
Concentrated solutions contain more solute than dilute solutions.
Dilute solutions contain more solute than concentrated solutions.
Dilute solutions have a higher solvent-to-solute ratio than concentrated
solutions.
Answer:
The statement that is true about dilute and concentrated solutions is: Dilute solutions have a higher solvent-to-solute ratio than concentrated solutions.
Explanation:
In dilute solutions, the amount of solute is relatively low compared to the amount of solvent. Conversely, in concentrated solutions, the amount of solute is relatively high compared to the amount of solvent.
For example, if you add a teaspoon of sugar to a cup of water, you have a dilute solution. If you add five teaspoons of sugar to the same cup of water, you have a concentrated solution.
So, the correct statement is that dilute solutions have a higher solvent-to-solute ratio than concentrated solutions.
Answer:
Dilute solutions have a higher solvent-to-solute ratio than concentrated
solutions.
Explanation:
If the moon is half full on June 15, on approximately what date will it next become full? O A. June 29 O B. June 22 O C. July 14 O D. July 7 SUDIAIT
The next full moon will occur around July 14, which is answer choice C.
What is moon ?
The moon is a natural satellite of the Earth, meaning it is a celestial body that orbits the Earth. It is the fifth largest moon in the solar system and is the largest relative to the size of its host planet.
The moon is approximately one-quarter the size of the Earth and is the closest astronomical object to the Earth.
If the moon is half full on June 15, then we can determine the next full moon by adding approximately 29.5 days to June 15, which is the average length of time for the moon to complete a full cycle of phases.
So, the next full moon will occur around July 14, which is answer choice C.
Therefore, option C is the correct answer.
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According to the solubility curve below, which of the following statements is true
about potassium nitrate (KNO3) at 60°C?
KNO3 will completely dissolve at 60°C.
KNO3 is insoluble at 60°C.
The solubility of KNO3 is approximately 110 g/100 mL
The solubility of KNO3 is approximately 50 g/100 mL
8
We can see here that according to the solubility curve below, the statement that is true about potassium nitrate (KNO3) at 60°C is: C. The solubility of KNO3 is approximately 110 g/100 mL.
What is solubility curve?A solubility curve is a graphical representation of the relationship between the solubility of a particular substance and temperature (or pressure, in some cases).
It is a plot of the maximum amount of solute that can be dissolved in a given solvent at a specific temperature, with the solubility usually expressed in grams of solute per 100 grams of solvent.
At 60°C, the solubility of potassium nitrate (KNO3) is relatively high, and it can dissolve in water to form a clear, colorless solution. The solubility of KNO3 in water varies with temperature, and at higher temperatures, the solubility generally increases.
The approximate solubility of KNO3 at 60°C is around 110 g/100 mL, meaning that 100 mL of water at this temperature can dissolve around 110 grams of KNO3. Therefore, KNO3 will not be completely insoluble at 60°C.
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Answer:The solubility of KNO3 is approximately 110 g/100 mL
Explanation:
Please Help!!!
4.6g of sucrose was added to 72.9g of water. What is the percent composition? Round to the tenths place.
Answer:
The percent composition by mass of a component in a mixture is given by:
percent composition = (mass of component / total mass of mixture) x 100%
In this case, the component is sucrose, and the total mass of the mixture is the sum of the mass of sucrose and the mass of water. We have:
mass of sucrose = 4.6 g mass of water = 72.9 g total mass of mixture = mass of sucrose + mass of water = 4.6 g + 72.9 g = 77.5 g
Substituting these values into the formula, we get:
percent composition of sucrose = (4.6 g / 77.5 g) x 100% = 5.94%
Rounding to the tenths place, we get:
percent composition of sucrose ≈ 5.9%
Therefore, the percent composition of sucrose in the mixture is approximately 5.9%.
i hope this helps you
Why are coal, oil, and natural gas all classified as "fossil" fuels? Responses They are all formed from ancient organic material that was buried under many layers of sediment and not allowed to decay. They are all formed from ancient organic material that was buried under many layers of sediment and not allowed to decay. Radioactive dating estimates the age of the organisms as formed from to prehistoric times. Radioactive dating estimates the age of the organisms as formed from to prehistoric times. They often contain the impressions of organisms when removed from the ground. They often contain the impressions of organisms when removed from the ground. They are all formed from ancient inorganic material that was covered by seawater for millions of years.
They are all formed from ancient organic material that was buried under many layers of sediment and not allowed to decay.
What are organic materials?
Organic materials are those that contain carbon and hydrogen atoms. These materials are typically derived from living organisms or their remains, such as plants and animals. Organic materials can be found in various forms such as solids, liquids, and gases. Some examples of organic materials include wood, paper, cotton, wool, leather, petroleum, and natural gas. These materials are used in a wide range of applications, from building construction to clothing production to energy generation.To know more about organic materials, click the link given below:
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Which of the following atoms would
share properties and number of
electrons in their outermost energy
level?
a. Ne, Ar, and Kr
c. Si, As, and Sb
b. Li, Ca, and Mg
d. P, S, and Cl
Ne, Ar, and Kr share properties and the number of electrons in their outermost energy level because they belong to the same group (noble gases). Therefore, option A is correct.
What are noble gases and their properties?Any of a class of rare gases with high stability and very low reaction rates, such as helium, neon, argon, krypton, xenon, and occasionally radon. also known as the inert gas.
Noble gases are low chemically reactive, odorless, colorless, nonflammable, and monotonic gases. Noble gases are exceedingly stable and unlikely to form chemical connections since they have the minimal inclination to receive or lose electrons. Hence, option A is correct.
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How would you name this?
*Grade 12 organic chemistry*
According to IUPAC nomenclature, the longest chain of this compound contains 7 carbons. Hence, the name of this compound is 4 -propyl-5-ethyl-5-phenyl heptane.
What is IUPAC nomenclature?IUPAC rules are used to name the organic compounds. As per this rule, the compound is named based on the chain containing highest number of carbon atoms. The substituents are named with their prefix or suffix.
For the given compound, the longest chain contains 7 carbon atoms. Hence, the chain is named as heptane. The substituents are numbered in such a way that, they have the least possible number.
The 4th carbon contains a propyl group and a phenyl group and ethyl groups are attached on the 5th position in the longest chain. Therefore, the name of the compound is 4 -propyl-5-ethyl-5-phenyl heptane.
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How do covalent bonds differ from ionic bonds?
Answer: Covalent bonds share electrons between two or more atoms. Ionic bonds form when two or more ions come together with charge differences.
Explanation:
Ionic bonds: atoms TRANSFER electrons
Covalent: atoms SHARE electrons
A box of paperclips contains 2.21x10 24 atoms of aluminum. How many moles are in the box of paperclips? I am starting with the unit _______________ and solving for the unit ________________
Taking into account the definition of Avogadro's Number, a box of paperclips contains 2.21×10²⁴ atoms of aluminum and 3.67 moles of aluminum.
Definition of Avogadro's NumberAvogadro's number is a number that defines the amount of elements (which can be electrons, atoms, ions, molecules) found in one mole of a substance.
Its value is 6.023×10²³ particles per mole. Avogadro's number applies to any substance.
Amount of moles in the box of paperclipsThen you can apply the following rule of three: if 6.023×10²³ atoms are contained in 1 mole of aluminum, then 2.21×10²⁴ atoms are contained in how many moles of aluminum?
amount of moles of aluminum= (2.21×10²⁴ atoms × 1 mole)÷ 6.023×10²³ atoms
amount of moles of aluminum= 3.67 moles
Finally, 3.67 moles of aluminum are present.
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PLEASE HELP! Please answer thanks
Answer:
4m
Explanation:
wavelength is peak to peak and 4m is the closest
A table is titled Effect of Speed on Kinetic Energy. A blank graph is shown to the right.
A table shows the mass in kilograms, the speed in meters per second and the kinetic energy in Joules for four trials. The last column, titled Drag to Graph, displays a car icon. Trial 1: Mass is 2; Speed is 1; Kinetic Energy is 1. Trial 2: Mass is 2; Speed is 2; Kinetic Energy is 4. Trial 3: Mass is 2; Speed is 3; Kinetic Energy is 9. Trial 4: Mass is 2, Speed is 4; Kinetic Energy is 16. A blank graph is shown to the right. The vertical axis is titled Kinetic Energy, Joules. It is labeled from 0 to 20 in increments of two. The horizontal axis is titled Speed, meters per second. It is labeled from 0 to 5 in increments of one.
Car 1
Car 2
Car 5
Car 4
Based on the given information, we can plot the data points on the blank graph to see the effect of speed on kinetic energy:
Vertical axis: Kinetic Energy (Joules)
Horizontal axis: Speed (meters per second)
Define the term kinetic energy.
The energy an object has as a result of its motion is known as kinetic energy. It is a scalar quantity and is defined as one-half of the product of an object's mass and the square of its velocity. Mathematically, it can be represented as:
Kinetic Energy = 1/2 x mass x [tex]velocity^{2}[/tex]
where mass is the mass of the object in kilograms and velocity is the speed of the object in meters per second.
Kinetic energy is a form of mechanical energy and can be transferred between objects in collisions or other interactions. It is a fundamental concept in physics and is used to understand and describe the behavior of moving objects in various physical systems.
The data points are:
Trial 1: Mass=2, Speed=1, Kinetic Energy=1
Trial 2: Mass=2, Speed=2, Kinetic Energy=4
Trial 3: Mass=2, Speed=3, Kinetic Energy=9
Trial 4: Mass=2, Speed=4, Kinetic Energy=16
Therefore, The graph shows that as the speed increases, the kinetic energy also increases. The relationship between speed and kinetic energy is quadratic, which means that the kinetic energy increases with the square of the speed.
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under what condition does calcuim react with water
Calcium Hydroxide is created when calcium combines with water, or Ca2+. Water plus Ca results in Ca(OH)2.
Due to the heat created by the reaction, the calcium begins to float.
What purposes serves calcuim?Although it additionally plays a critical role in haemostasis, assisting in muscular contraction, controlling regular heart rhythms, and maintaining normal neural activities, calcium is a substance that is most frequently linked to strong bones and teeth.
What adverse effects can calcium supplements cause?Little, if any, negative effects are brought on by calcium supplementation. Gas, constipation, and bloating are examples of adverse symptoms that might occasionally happen. The most constipating substance is typically calcium carbonate. Finding a calcium supplement that you tolerate the best may need you to test a few various brands or varieties.
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Find the mass of liquid water required to absorb 3.12×10^4 kJ of heat energy on boiling.
Answer in units of g.
Approximately 13836 grams (or 13.8 kg) of liquid water is required to absorb 3.12×10^4 kJ of heat energy on boiling.
How to find the mass of liquid water required to absorb ?To find the mass of liquid water required to absorb 3.12×10^4 kJ of heat energy on boiling, we need to use the following formula:
q = m * ΔH
Where
q is the heat energy absorbedm is the mass of the waterΔH is the enthalpy of vaporization of waterThe enthalpy of vaporization of water is 40.7 kJ/mol.
To convert kJ to J, we multiply by 1000:
q = 3.12×10^4 kJ = 3.12×10^7 J
Substituting the values, we get:
3.12×10^7 J = m * (40.7 kJ/mol)
To solve for the mass of water, we need to first convert the enthalpy of vaporization to J/g:
40.7 kJ/mol = 40.7×10^3 J/mol
The molar mass of water is 18.015 g/mol, so we can calculate the enthalpy of vaporization per gram:
40.7×10^3 J/mol / 18.015 g/mol = 2257 J/g
Substituting this value, we get:
3.12×10^7 J = m * (2257 J/g)
Solving for m, we get:
m = 3.12×10^7 J / (2257 J/g)
m ≈ 13836 g
Therefore, approximately 13836 grams (or 13.8 kg) of liquid water is required to absorb 3.12×10^4 kJ of heat energy on boiling.
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How many grams of ammonia will be formed upon the reaction of 30.7 grams of nitrogen gas with excess hydrogen gas
Answer: 37.32
Explanation:
Nitrogen gas (N2) - 28.02 g/mol
Hydrogen gas (H2) - 2.02 g/mol
Ammonia gas (NH3) - 17.03 g/mol
Using the given mass of nitrogen gas, we can first calculate the number of moles of nitrogen gas present:
moles of N2 = mass of N2 / molar mass of N2
moles of N2 = 30.7 g / 28.02 g/mol
moles of N2 = 1.096 mol
From the balanced chemical equation, we know that one mole of nitrogen gas reacts with three moles of hydrogen gas to form two moles of ammonia gas. Since we have an excess of hydrogen gas, we can assume that all of the nitrogen gas will react to form ammonia gas. Therefore, we can calculate the number of moles of ammonia gas formed using the mole ratio from the balanced chemical equation:
moles of NH3 = (moles of N2) x (2 moles of NH3 / 1 mole of N2)
moles of NH3 = 1.096 mol x (2 mol/1 mol)
moles of NH3 = 2.192 mol
Finally, we can calculate the mass of ammonia gas formed using its molar mass:
mass of NH3 = moles of NH3 x molar mass of NH3
mass of NH3 = 2.192 mol x 17.03 g/mol
mass of NH3 = 37.32 g
Use the information in the table to calculate AS
for each of these reactions. Round all answers to
nearest whole number
The change in entropy for each reaction is;
1) -198 J/mol
2) -5 J/mol
3) -148 J/mol
What is the change in entropy?
The change in entropy, denoted as ΔS, is a measure of the amount of disorder or randomness in a system before and after a process or reaction. It is defined as the difference between the entropy of the final state and the entropy of the initial state.
The formula for calculating the change in entropy is:
ΔS = S_final - S_initial
where ΔS is the change in entropy, S_final is the entropy of the final state, and S_initial is the entropy of the initial state.
We have that;
1) 2(192.5) - [3(130.58) + 191.50]
= 385 - [391.74 + 191.50]
= -198 J/mol
2) [213.6 + 2(188.83] - [186.3 + 2(205]
= -5 J/mol
3) 2(220) - [2(191.50) + 205]
-148 J/mol
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Pls I need help urgently. In case of water, which effect, adhesion or cohesion is the strongest? Explain
Answer: The adhesion of the molecules to the glass is stronger than the cohesion among the molecules.
Explanation:
Since water forms a concave up meniscus, the adhesion of the molecules to the glass is stronger than the cohesion among the molecules. However, in the absence of the adhesive force (when water reaches the tip of the glass), the cohesive force remains present. Thus cohesive force alone proves that it can still hold itself in place without pouring out of the cylinder. This example emphasizes the importance of that cohesive force and adhesive forces do not simply cancel each other out, yet it is the difference between the two that determines the characteristic of the liquid.
In the case of water, cohesion is stronger than adhesion. Cohesion refers to the intermolecular forces that bind water molecules to each other, while adhesion refers to the intermolecular forces that bind water molecules to a surface or material.
Water molecules are strongly attracted to each other due to hydrogen bonding, which is a type of intermolecular force that occurs between a hydrogen atom of one water molecule and an oxygen atom of another water molecule. These hydrogen bonds are responsible for the high surface tension of water and its ability to form drops or beads. In other words, the cohesive forces between water molecules are stronger than the adhesive forces between water and other materials.
However, the strength of adhesion in water can vary depending on the nature of the surface or material it comes into contact with. For example, water is strongly attracted to polar surfaces such as glass, which has a high affinity for water due to its polar nature. This is why water will form a meniscus or rise up a glass capillary tube through capillary action. On the other hand, water is less attracted to non-polar surfaces such as wax or oil, which have a low affinity for water, and will tend to bead up or form droplets on these surfaces.
In summary, while both cohesion and adhesion are important factors in determining the behavior of water, cohesion is stronger than adhesion in water due to the strong hydrogen bonding between water molecules.
What two structures make up the backbone of the dna molecule
Two strands of DNA wrap around each other to form a twisted ladder-like structure. Alternating deoxyribose and phosphate groups form the backbone of each chain.
DNA is made up of base pairs attached to a sugar-phosphate backbone to form a double helix.
Alternating deoxyribose and phosphate groups form the backbone of each chain. Each linear chain of has covalent bonds that firmly hold bases, sugars, and phosphate groups together (both within and between each module).
Bases on one strand pair with bases on the other strand to form hydrogen bonds between the two strands.
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need this done quick
Explanation:
1a) c since c is the biggest part of the pie chart
1b) 25% as it is close to a quarter
quarter=25%
1c) A=10%
1d) I think Mr.M's class was difficult since 35% of people got decent grades (a and b). As that is a percentage less than half of the class i would consider that as a difficult class.
Hope this helped.
How many Hydrogen atoms in the formula 4H3O2
Answer:
Three atoms of Hydrogen.
Explanation:
There are four molecules of three Hydrogen atoms and two oxygen atoms.
Hope it helps.
pt.2 of first question… please help
The amount of the propane can be obtained from the mass and the mass of the propane.
How do you calculate the amount of propane gas in mole?To calculate the amount of propane gas in moles, you need to know the mass of propane gas and its molar mass. The molar mass of propane (C3H8) is approximately 44.1 g/mol.
Once you know the mass of the propane gas, you can use the following formula:
moles = mass (in grams) / molar mass (in grams per mole)
For example, let's say you have 88.2 g of propane gas:
moles = 88.2 g / 44.1 g/mol
moles = 2.0 mol
Learn more about propane:https://brainly.com/question/25008296
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You have a ballon filled with carbon dioxide gas at STP. The balloon’s volume is 2.8L, How many molecules are in it?
Answer:
Refer to pic..........
