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LenKa [72]
2 years ago
9

Which process is occurring at the center of all active stars? A) fusion B) fission C) flatulation D) hydrogen decay

Chemistry
1 answer:
dusya [7]2 years ago
8 0
The answer is A) fusion. Occurring at the center of all active stars including our sun, this nuclear reaction of combining two hydrogen atoms, and using an enormous amount of heat, forms a single more massive helium atom. This fusion of hydrogen atoms also produces the energy of the stars and creates the helium gases existing in the universe. 
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Thomas poured 25 mL of 0.60 M HCl into a large bottle. He then added enough water so that the new (diluted) concentration was 0.
Molodets [167]

Answer:

The answer to your question is 150 ml

Explanation:

Data

Volume 1 = 25 ml

Concentration 1 = 0.6 M

Volume 2 = ?

Concentration 2 = 0.1 M

Formula

            Volume 1 x Concentration 1 = Volume 2 x Concentration 2

Solve for Volume 2

             Volume 2 = (Volume 1 x Concentration 1)/Concentration 2

Substitution

             Volume 2 = (25 x 0.6) / 0.1

Simplification

            Volume 2 = 15 / 0.1

Result

            Volume 2 = 150 ml

5 0
2 years ago
Consider a general reaction A ( aq ) enzyme ⇌ B ( aq ) The Δ G ° ′ of the reaction is − 9.130 kJ ⋅ mol − 1 . Calculate the equil
Liula [17]

Answer:

K = 39.85

ΔG= -6.9 kJ/mol

Explanation:

Step 1: Data given

The ΔG°′ of the reaction is − 9.130 kJ/mol

Temperature = 25.0 °C = 298 K

Body temperature = 37.0 °C = 310K

the concentration of A is 1.9 M

the concentration of B is 0.80 M

Step 2: The reaction

A (aq) ⇌ B (aq)

Step 3:

ΔG° = -RT ln K

⇒with ΔG° = standard Gibbs free energy change = − 9.130 kJ/mol

⇒with R = the gas constant = 8.314 J/mol*K

⇒with T = the temperature = 298 K

⇒with K = the equilibrium constant = TO BE DETERMINED

− 9130 J/mol = - 8.314 * 298 * ln K

ln K = 3.685

K = e^3.685

K = 39.85

Step 4: The reaction at body temperature

ΔG= ΔG°  + RT ln [B]/[A]

⇒with ΔG° =  Gibbs free energy change

⇒with ΔG° = standard Gibbs free energy change = − 9130 J/mol

⇒with R = the gas constant = 8.314 J/mol*K

⇒with T = the temperature = 310 K

⇒with [A] = 1.9 M

⇒with [B] = 0.80 M

ΔG= -9130 J/mol + 8.314 J/mol*K * 310 K * ln (1.9/0.80)

ΔG= -9130 J/mol + 2229.4J/mol

ΔG=-6900.6 J/mol = -6.9 kJ/mol

6 0
3 years ago
A sampling of 30 million particles coming from an exhaust vent contained 60 sulfur dioxide molecules. What is another way of exp
Masteriza [31]
I’m not sure on this one either
4 0
3 years ago
Carbon dioxide is ________. the most abundant greenhouse gas the most potent (per molecule gas. of the greenhouse gases the only
maw [93]
Answer: <span>the main anthropogenic greenhouse gas produced in the united states.

Anthropogenic means that the man is the responsible for its generation.

Fuel consumption for vehicles, factories and houses generates huge amounts of CO2.
</span>
Let's review the other options:

<span>a. the most abundant greenhouse gas

FALSE: The most abundant greenhouse gas is water vapor.


b. the most potent (per molecule) gas. of the greenhouse gases

Methane is considered more potent than CO2 as heat-trapping.

c. the only greenhouse gas presently decreasing in the atmosphere

CO2 has not decreased but increased.

d. the main anthropogenic greenhouse gas produced in the united states

TRUE as stated initially

e. the only greenhouse gas presently increasing in the atmosphere

FALSE: Methane (CH4) is also increasing.
</span>
7 0
3 years ago
What does a strong nuclear force do in an atom? It repels electrons from other electrons. It repels protons from other protons.
iragen [17]
The Answer Is It Attracts Protons And Neutrons
Hope This Helps

3 0
3 years ago
Read 2 more answers
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