Most commercial sports drinks are a. calcium-rich. b. good recovery sources. c. sodium-poor. d. highly concentrated

QUESTION POSTED AT 15/01/2020 - 01:31 AM

Answered by admin AT 15/01/2020 - 01:31 AM

C. Sodium Poor - I took the test and got it correct

Post your answer

Related questions

2. Which of the following is true about a carbonated soft drink?. . The carbon dioxide is the solvent, and water is the solute.. . The water is the solution, and carbon dioxide is the solvent.. . The carbon dioxide is the solution, and the water is the solvent.. . The water is the solvent, and the carbon dioxide is the solute.. . . 3. For the reaction CH3COOH CH3COO + H+, which of the following statements is true?. . CH3COO is an Arrhenius base.. . CH3COO is a Lewis base.. . CH3COOH is a Brønsted-Lowry acid.. . CH3COOH is a Brønsted

Answer: 2. The water is the solvent, and the carbon dioxide is the solute.

3. CH_3COOH] is a Brønsted-Lowry acid.

Explanation:

2. Solute is the dispersed phase of the solution and is present in small quantities whereas solvent is the dispersion medium and is present in large proportions. carbonated drinks contain carbon dioxide dissolved in water and thus carbon dioxide is the solute and water is the solvent which together form a solution.

3. Bronsted lowry acid  is a substance which donates H^+. Bronsted lowry base is a substance which accepts H^+.

Arrhenius acid is a substance which donates H^+ when dissolved in water.Arrhenius base is a substance which donates OH^- when dissolved in water.

Lewis acid  is a substance which accepts electrons. Lewis base is a substance which donates electrons.

CH_3COOH\rightarrow CH_3COO+H^+

Thus as acetic acid donates  H^+ , it is considered as  Bronsted-Lowry acid.


ANSWERED AT 21/01/2020 - 10:37 AM


QUESTION POSTED AT 21/01/2020 - 10:37 AM

Titanium, a very strong and durable mineral, is used in making bikes, automobile parts, and sports equipment True or False

The answer is true.

Titanium is one of the strongest and light-weight metals in this world. This metal is often used in sporting equipment like baseball bats tennis rackets and bicycle frames. Titanium is also used in building spaceships because of its high melting points and is less susceptible to corrosion.

ANSWERED AT 21/01/2020 - 10:13 AM


QUESTION POSTED AT 21/01/2020 - 10:13 AM

A perfume bottle is dropped in the corner of a room. The odor of the perfume can be detected on the other side of the room. Which statement best describes this observation? Particles are moving from regions of high concentration to low concentration. Particles are moving from regions of low concentration to high concentration. Particles are moving through a small opening into a smaller volume. Particles are moving through a small opening into a larger volume.

The question is giving us the following scenario: "A perfume bottle is dropped in the corner of a room. The odor of the perfume can be detected on the other side of the room" I am assuming here that the bottle broke, so there is no opening that is relevant. but even if it didn't break, smells usually travel through diffusion from regions of high concentration to low concentration. - so the best answer is: Particles are moving from regions of high concentration to low concentration. At the end, equal concentration in the whole room is to be expected.

ANSWERED AT 21/01/2020 - 09:32 AM


QUESTION POSTED AT 21/01/2020 - 09:32 AM

If 17.8 grams of KOH dissolve in enough water to make a 198-gram solution, what is the concentration in percent by mass?

Solute of solution = 17.8 g

Solvn = 198 g

% = 17.8 / 198

w% = 0.089 x 100 = 8.9%  by mass

hope this helps!

ANSWERED AT 21/01/2020 - 08:30 AM


QUESTION POSTED AT 21/01/2020 - 08:30 AM

Which of the following popular sayings is an example of a true scientific theory? Eating lots of carrots will improve your eyesight. It is safe to eat dropped food if you adhere to the 5-second rule. Drinking warm milk makes you sleepy. Touching toads gives you warts.

I think the correct answer is he first option. Among the popular sayings given, the true scientific theory is the statement "Eating lots of carrots will improve your eyesight." This is because many studies and researches had been done and proved that carrots really helps improve or maintain the health of the eyes.

ANSWERED AT 21/01/2020 - 07:57 AM


QUESTION POSTED AT 21/01/2020 - 07:57 AM

Which of the following popular sayings is an example of a true scientific theory? Eating lots of carrots will improve your eyesight. It is safe to eat dropped food if you adhere to the 5-second rule. Drinking warm milk makes you sleepy. Touching toads gives you warts.

I think the correct answer is the first option. Among the popular sayings given, the true scientific theory is the statement "Eating lots of carrots will improve your eyesight." This is because many studies and researches had been done and proved that carrots really helps improve or maintain the health of the eyes.

ANSWERED AT 21/01/2020 - 07:56 AM


QUESTION POSTED AT 21/01/2020 - 07:56 AM

What happens when an electron moves from a high energy level to a lower one? A. it absorbs light B. it emits light C. it disappears D. it gets bigger

B. It emits light and energy is released and photon is created.

ANSWERED AT 21/01/2020 - 06:42 AM


QUESTION POSTED AT 21/01/2020 - 06:42 AM

The hydrogen ion concentration of a vinegar solution is 0.00010 m. how is this concentration written in scientific notation?

0.00010 written in scientific notation is 1.0 * 10^-4.

Scientific notation refer to the standard manner of writing numbers that are too small or that are too big in such a way that it will be convenient to involve them in calculations and also easier to compare them. Another name for scientific notation is standard form. The format of scientific notation is Z * 10^a, where Z can be any number between 1 and 9 and a is an integer, which can be positive or negative. For the number given in the question, the number of zeros at the back of 1 is counted [there are four zeros] and this number is written as an index of 10. A negative sign is added to the number because of the decimal point in the figure.

ANSWERED AT 21/01/2020 - 06:11 AM


QUESTION POSTED AT 21/01/2020 - 06:11 AM

A gamma ray has a very high frequency of about 1019 s-1. what is the wavelength of the gamma ray?

This is a relatively simple question given the formula and the important constant. The constant that we will need here is the speed of sound. That is 3.00*10^8 m/s. The speed of light is equal to the wave length times the frequecny. We are given the frequency and speed of light, wavelength is then computed as follows: 

wave length  = speed of light / frequency = 3.00*10^8 m/s/ 10^19 s-1 = 3*10^-11 m or 0.03 nm

ANSWERED AT 21/01/2020 - 05:53 AM


QUESTION POSTED AT 21/01/2020 - 05:53 AM

The mass of an atom is ________________________. distributed uniformly throughout the atomic sphere. concentrated in the electrons divided equally between the nucleus and the electrons. concentrated in the nucleus.


The mass of an atom is... concentrated in the nucleus.  

This is evident by the fact that the mass number of the element is the number of protons and neutrons and the fact that the mass of an electron is very negligible



ANSWERED AT 21/01/2020 - 05:45 AM


QUESTION POSTED AT 21/01/2020 - 05:45 AM

Which of the following is true regarding dilutions? the number of moles of solute do not change the number of moles of solute change more solvent is added to a stock solution to increase the concentration more solute is added to a stock solution to increase the concentration

Dilution is a process of adding more solvent to a solution to decrease the concentration of the solution. In the process, the number of moles of solute does not change and only that of the solute change particularly increased. The answer to this problem is the first statement. 

ANSWERED AT 21/01/2020 - 05:32 AM


QUESTION POSTED AT 21/01/2020 - 05:32 AM

In an experiment, a student wants to increase the rate of a reaction that involves gases. Which change to the reactants would accomplish this? Increase the volume to decrease pressure and to increase concentration. Increase the volume to increase pressure and to decrease concentration. Decrease the volume to decrease pressure and to increase concentration. Decrease the volume to increase pressure and to increase concentration.

Answer: Option (d) is the correct answer.

Explanation:

When gases are involved in a reaction, then in order to increase the rate of reaction we need to decrease the volume to increase the pressure and to increase the concentration.

This is because when we decrease the volume and increase the pressure then the particles will become closer to each other. As a result, the interaction between the particles will increase.

Also, when we increase the concentration then more number of particles will interact and hence product formation will be faster.

Thus, out of the given options, decrease the volume to increase pressure and to increase concentration will increase the rate of a reaction that involves gases.

ANSWERED AT 21/01/2020 - 05:15 AM


QUESTION POSTED AT 21/01/2020 - 05:15 AM

It is best to say that most human sources of air pollution result from _______. a. forestry management b. fuel burning c. heating devices d. vehicle exhaust

Answer : The correct option is, B.

Explanation :

Fuel burning : When the fuel burns, the carbon and hydrogen atoms combine with oxygen atoms to produce carbon dioxide and water vapor.

The burning of fuels like wood, coal and petroleum products releases unburnt carbon particles in the air. These unburnt carbon particles are the harmful pollutants which can cause respiratory diseases.

Therefore, the fuel burning is the human source of air pollution.

ANSWERED AT 21/01/2020 - 05:00 AM


QUESTION POSTED AT 21/01/2020 - 05:00 AM

The concentration of a solute in a solution is greater than the maximum concentration that is predicted from the solute's solubility.

If this is a true or false question, then the answer is false. The concentration of a solute in a solution cannot be greater than the max concentration that is predicted from the solute's solubility. It can only be lesser or equal to the predicted concentration that is computed.

ANSWERED AT 21/01/2020 - 04:39 AM


QUESTION POSTED AT 21/01/2020 - 04:39 AM

Distilled water has a hydronium ion concentration of 1 what is the ph of distilled water?

PH is scale which measures the acidity or alkalinity of a solution. It ranges from a level of 1 to 14. A pH which range from 1 to 6 represents an acidic substance. At pH of 7, signifies the solution is neutral. And at a pH of 8-14 represents a basic solution. pH is expressed as the negative logarithm of the concentration of hydronium ions.

pH = - log [H+]
pH = - log 1
pH = 0

ANSWERED AT 21/01/2020 - 03:55 AM


QUESTION POSTED AT 21/01/2020 - 03:55 AM

Consider the reaction. mc032-1.jpg At equilibrium, the concentrations of the different species are as follows. [H2O] = 0.077 M [Cl2O] = 0.077 M [HClO] = 0.023 M What is the equilibrium constant for the reaction at this temperature?

The equilibrium constant is a value which represents the equilibrium of a reaction. It is a reaction quotient when the reaction reached equilibrium. If Keq is greater than 1, the mixture contains mostly the products. On the other hand, if Keq is less than 1, the mixture contains the reactants. It is calculated as follows: 2HClO = H2O + Cl2O

Keq = 
[H2O] x [Cl2O] / [HClO]^2
Keq = 0.077 x 0.077 / 0.023
Keq = 0.258

ANSWERED AT 21/01/2020 - 02:59 AM


QUESTION POSTED AT 21/01/2020 - 02:59 AM

Temperature depends on the average kinetic energy of the particles in a sample. How does this help with explaining why a plasma-based light does not have a high temperature? No particles in the plasma have high kinetic energy. The fastest particles have the greatest mass. Most particles in the plasma are heavy and slow. The fastest particles transfer most of their energy through collisions.

Answer : Option C) Most of the particles in plasma are heavy and slow.

Explanation :

Temperature depends on the average kinetic energy of the particles in a sample. This helps to explains that plasma based light does not has a high temperature because the particles when are in plasma state are usually heavy and it moves slowly. They take time to reach to the equilibrium once excited. This causes the plasma based light to have high temperature delayed or usually after high usage only.

ANSWERED AT 21/01/2020 - 02:55 AM


QUESTION POSTED AT 21/01/2020 - 02:55 AM

During photosynthesis, sunlight shining on a plant is absorbed. Through several chemical reactions, the plant produces sugar, a high-energy compound, from simpler substances.

The equation that represents the process of photosynthesis is: 6CO2+12H2O+light->C6H12O6+6O2+6H2O. Photosynthesis is the process in plants to make their food. This involves the use carbon dioxide to react with water and make sugar or glucose as the main product and oxygen as a by-product.

ANSWERED AT 21/01/2020 - 02:42 AM


QUESTION POSTED AT 21/01/2020 - 02:42 AM

Diffusion of water across a membrane from areas of higher concentration to areas of lower concentration is called _____. osmosis passive diffusion facilitated diffusion cellular respiration \ Diffusion of water across a membrane from areas of higher concentration to areas of lower concentration is called _____. osmosis passive diffusion facilitated diffusion cellular respiration The cell mechanism of "active transport" involves the transport of insoluble chemicals across the ...

The correct answers are as follows:

1. Diffusion of water across a membrane from areas of higher concentration to areas of lower concentration is called OSMOSIS. Osmosis is a very important process in the living organisms because the process facilitates the even distribution of essential nutrients in the cells of the body. Osmosis also facilitate the removal of waste products from the living cells.

2. The cell mechanism of active transport involves the transport of insoluble chemicals across the THE PLASMA MEMBRANE OF CELLS.

In living cells, there are two basic types of particles' transportation for movement of particles in an out of the cells, these are passive and active transport. The passive mode of transportation does not require energy to transport particles but active transport requires the supply of energy in form of ATP to transport particles in and out of the cells.

ANSWERED AT 21/01/2020 - 02:12 AM


QUESTION POSTED AT 21/01/2020 - 02:12 AM

A weak acid placed in water contains a. the same number of unionized acid molecules as a strong acid in water. b. no unionized acid molecules. c. a lower concentration of unionized acid molecules than a strong acid in water. d. a higher concentration of unionized acid molecules than a stronger acid in water

Answer is: d. a higher concentration of unionized acid molecules than a stronger acid in water.

For example:

Chemical reaction 1: HCl(aq) + H₂O(l) → H₃O⁺(aq) + Cl⁻(aq).

Chemical reaction 2: CH₃COOH(aq) + H₂O(l) ⇄ H₃O⁺(aq) + CH₃COO⁻(aq).

Hydrochloric acid (HCl) is strong acid, which means that concencentration of hydronium ions are equal as concentration of hydrochloric acid.

Acetic acid (CH₃COOH) is weak acid and does not dissociate completely as HCl, so concentration of hydronium ion in this solutions are very low.

ANSWERED AT 21/01/2020 - 02:10 AM


QUESTION POSTED AT 21/01/2020 - 02:10 AM

Small hydrocarbons have what characteristics? a. High boiling points c. Solid at room temperature b. Gases at room temperature d. Liquid at room temperature Please select the best answer from the choices provided A B C D

I think the correct answer is D.  most small hydrocarbons are non-polar molecules with small molar masses which means that they should have low boiling points which means that they should be gasses at room temperature.

I hope this helps.  Let me know if anything is unclear.

ANSWERED AT 21/01/2020 - 02:06 AM


QUESTION POSTED AT 21/01/2020 - 02:06 AM

Calculate density of a rectangular solid, which has a mass of 25.71 g. It is 2.30 cm long, 4.01 cm wide and 1.82 cm high.

Density is a property of the substances that is obtained by dividing its mass by the volume. For a rectangular solid, the volume may be solved by the following equation,
 
                                          V = L x W x H

Substituting the given values for the dimension,
 
                  V = (2.30 cm) x (4.01 cm) x (1.82 cm) = 16.78786 cm³

Calculating for the density,
 
                                Density = mass / volume
 
                Density = 25.71 cm / 16.78786 cm³ = 1.53 grams per cm³

Thus, the density of the given solid is approximately 1.53 grams per cm³.




ANSWERED AT 21/01/2020 - 01:53 AM


QUESTION POSTED AT 21/01/2020 - 01:53 AM

During diffusion, when the concentration of molecules on both sides of a membrane is the same, the molecules will (1 point). move across the membrane to the outside of the cell. stop moving across the membrane. continue to move across the membrane in both directions. move across the membrane to the inside of the cell.

During the diffusion process, when the concentration of molecules on both sides of a membrane is the same, the molecules will continue to move across the membrane in both directions. 

ANSWERED AT 21/01/2020 - 12:58 AM


QUESTION POSTED AT 21/01/2020 - 12:58 AM

1. What conditions cause deviations from the "ideal" gas? Select all that apply. low temperatures high temperatures low pressure high pressure 2. What conditions cause deviations from the "ideal" gas? Select all that apply. low temperatures high temperatures low pressure high pressure

Answer:

                Conditions which results in deviating a gas from ideal behavior are;

                                               i) Low Temperature

                                               ii) High Pressure

Explanation:

                        Ideal gases are assumed as those gases which follow ideal gas equation i.e. P V = n R T as according to this equation the gas particles contained in any confined place don't interact with each other hence, zero interactions are present among the particles.

                        But, as the temperature is decreased, the kinetic energy i.e. velocity of gas particles also decreases therefore, resulting in the formation of interactions along with deviation from ideal behavior.

                        Sidewise, with increases in pressure the volume occupied by gas particles also decreases and the distances between particles also lowers bringing the particles close together resulting the formation of interactions and resulting in deviation from ideal behavior.

Conclusion:

                   So, it can be concluded that gases behave ideally at high temperature and low pressure and deviate from ideal behavior at low temperature and high pressure respectively.

ANSWERED AT 21/01/2020 - 12:57 AM


QUESTION POSTED AT 21/01/2020 - 12:57 AM

A base has Kb of 2.5 x 10-11. which of the following statements is true?(1 point) a) this is a concentrated base b)this base ionizes slightly in a aqueous solution c)this is a strong base d)an aqueous solution of this base would be acidic I'm thinking b. help and i'll give medal. Thank you

I disagree with the answer pick of D. If you have a neutral pH 7 solution and you proceed to add a base even with an relatively insignificantly low Kb your solution would still be more basic then acidic. The answer should be b which is true that the base only ionizes slightly in aqueous solution. This is also truer to the definition of what Kb represents.

ANSWERED AT 20/01/2020 - 10:46 PM


QUESTION POSTED AT 20/01/2020 - 10:46 PM

Scientists use critical thinking skills throughout the process of research or experimentation. A student notices that their energy level always seems to decrease when they drink soda, but they seem to have more energy when they don’t drink soda. The student decides to conduct an experiment to determine if their soda intake really does have an effect on their energy level. What critical thinking step has the student just completed in the situation described above? a. Asking a question b. Evaluating a promotional claim c. Adjusting a conclusion d. Determining a logical conclusion

Answer : Option A) Asking a question.

Explanation :

The step that the student just completed in the situation given above is asking a question.

As the student noticed that consumption of soda deceases their energy level, he asked the question to this why does this happens? this was the first step of using critical thinking skills to ask a question first analyze it and then perform and witness some experimental observations and come out with the conclusion.

But in this given example he just completed the first step of asking question. Therefore, the answer is asking a question which is option A.

ANSWERED AT 20/01/2020 - 10:01 PM


QUESTION POSTED AT 20/01/2020 - 10:01 PM