How doesthe pressure inside a rigid container change if the
absolute temperature of the gas inside is quadrupled?

Answers

Answer 1

Answer:

Answer:It quadruples

Explanation:

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Molecules in all organisms are composed in part of radioactive carbon-14. Which statement best explains the presence of carbon-14 in organisms?a. The radioactive isotope reacts in the same way as stable isotopes in the nuclear reactions in the body.
b. The radioactive isotope reacts in the same way as stable isotopes in the chemical reactions in the body.
c. The radioactive isotope reacts faster than stable isotopes in the nuclear reactions in the body.
d. The radioactive isotope reacts faster than stable isotopes in the chemical reactions in the body.

Answers

I think the correct answer from the choices listed above would be option B. The statement that best describes the presence of carbon-14 in organisms would be that radioactive isotope reacts in the same way as stable isotopes in the chemical reactions in the body. This seems to be the most suitable answer since the other choices suggest that there are nuclear reactions in our system which is very far from the truth.

The statement that best explains the presence of carbon-14 in organisms is that the radioactive isotope reacts in the same way as stable isotopes in the chemicalreactions in the body. That is option B.

What is radioactive carbon-14?

Radioactive carbon-14 is a type of radioactive element that is present in the air which is assimilated in small quantities into the body during metabolism( chemical reaction of the body).

The radioactive carbon-14. can be used in a process called carbon dating because it reacts the same way as stable isotopes in their chemical reactions in the body.

Learn more about radioisotopes here:

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The pH level of tomato juice is 4.2. What is the hydrogen-ion concentration [H+] for tomato juice?A. 0.0004 B. 0.0006 C. 0.00004 D. 0.00006

Answers

The pH of a solution is related to the hydrogen ion concentration in a logarithmic function which is expressed as:

pH = -log[H+]

4.2 = - log [H+]
[H+] = 6.31 x 10^-5 M

Therefore, the correct answer from the choices listed above is option D, 0.00006 M.

pH = 4.2

[H+] = 10 ^- pH

[H+] = 10 ^- 4.2

[H+] = 0.00006 M

Answer D

952 grams of ammonium carbonate are dissolved to make 1750 mL of solution

Answers

(%m/v) =mass of solute (in g) / volume of solution (in mL) x 100

= 952 g (NH4)2CO3 / 1750 mL x 100

= 0.544 x 100

(%m/v) = 54.4 g /mL or 54.4% concentration of ammonium carbonate
solution

H2(g) + CO2(g) + 10 kcal H2O(g) + CO(g)In another experiment involving the above reaction at 1,000°C, the equilibrium concentrations were found to be:

H2(g) = 2.0 moles per liter
H2O(g) = 4.0 moles per liter
CO2(g) = 5.0 moles per liter
CO(g) = 4.0 moles per liter

What is the equilibrium constant, Keq, for this reaction?

Answers

Answer: The equilibrium constant for the given reaction is 0.8

Explanation:

Equilibrium constant is defined as the ratio of concentration of the products raised to the power its stoichiometric coefficients to the concentration of reactants raised to power its stoichiometric coefficient. It is represented as $K_c$

For the general equation:

$aA+bB\rightleftharpoons cC+dD$

The equilibrium constant is represented as:

$K_c=([C]^c[D]^d)/([A]^a[B]^b)$

For the given chemical equation:

$H_2(g)+CO_2(g)+10 kcal\rightleftharpoons H_2O(g)+CO(g)$

$K_c$ for this equation is given by:

$K_c=([H_2O][CO])/([H_2][CO_2])$

Concentration at equilibrium of

$H_2=2mol/L\nH_2O=4mol/L\nCO_2=5mol/L\nCO=4mol/L$

Putting values in above equation, we get:

$K_c=(4* 4)/(2* 5)\nK_c=0.8$

Hence, the equilibrium constant for the given chemical reaction is 0.8

This might be a little hard for me but I got it. So you have 2.0, 4.0, 5.0 and 4.0. Subtract from 3.0 - 2.0 = 1.0 and 4.5 - 2.0 = 2.5.

So now we have other answers.

H20, H2, CO2 and CO

Keq reaction for each formula is 1.6

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The movement of organisms into a range is called A. immigration.
B. emigration.
C. population shift.
D. carrying capacity.

Answers

The answer is A. Immigration

Choose the correct equation to represent the following statement (unbalanced chemical equation):Aluminum reacts with hydrochloric acid to yield aluminum chloride and hydrogen.

A. AlCl3 + H2 Al + HCl
B. Al + HCl AlCl3 + H2
C. Al HCl + AlCl3 + H2
D. Al + HCl AlCl3 + H2O