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3 years ago

!! PLEASE ANSWER IMMEDIATELY !! 10 POINTS

Chemistry

1 answer:

Nuetrik [128]3 years ago

7 0

Answer: here is the answer your welcome :)

Explanation: You are visiting your Grandmother and notice that she is eating a balanced diet, taking vitamins, getting the proper amount of sleep and is not overweight. Despite her healthy lifestyle, she appears run down and tired. You realize that it's due to her lack of physical activity. Write a convincing letter to your grandma explaining the benefits of participating in regular physical activity.

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A Questic

Ivanshal [37]

Answer:

No, it is not feasible because the Gibbs free energy change is positive

Explanation:

∆Hreaction= (-602 KJ/mol) - (-348 KJ/mol) = -254 KJ/mol

∆Sreaction = (42 + 27) J/Kmol - (33 + 44) J/K = -8J/Kmol

From;

∆G = ∆H - T∆S

∆G = 254 × 10^3 J/mol - [340K × (-8 J/Kmol)]

∆G = 2.57 × 10^5 J/mol

Note that when the change in free energy is positive, a reaction is non spontaneous. Only a reaction that has a negative change in free energy is spontaneous.

3 0

3 years ago

Consider the word equation. Calcium hydroxide hydrochloric acid mc012-1. Jpg calcium chloride water Which is the corresponding f

dimulka [17.4K]

The corresponding formula equation is:

Upper Ca (upper OH) subscript 2 (s) plus 2 upper H upper Cl (l) right arrow upper Ca upper Cl subscript 2 (aq) plus 2 upper H subscript 2 upper O (l)

To obtain the word equation, we shall write out the balanced molecular equation. This is given below:

Calcium hydroxide => Ca(OH)₂

Hydrochloric => HCl

Calcium chloride => CaCl₂

Water => H₂O

Calcium hydroxide + Hydrochloric —> Calcium chloride + water

Ca(OH)₂ + HCl —> CaCl₂ + H₂O

There are 2 atoms of Cl on the right side and 1 atom on the left. It can be balance by writing 2 before HCl as shown below:

Ca(OH)₂ + 2HCl —> CaCl₂ + H₂O

There are a total of 4 atoms of H on the left side and 2 atoms on the right side. It can be balance by writing 2 before H₂O as shown below:

Ca(OH)₂ + 2HCl —> CaCl₂ + 2H₂O

Now, the equation is balanced.

Thus, the corresponding word equation is:

Upper Ca (upper OH) subscript 2 (s) plus 2 upper H upper Cl (l) right arrow upper Ca upper Cl subscript 2 (aq) plus 2 upper H subscript 2 upper O (l)

Learn more about balancing equation: brainly.com/question/15538713

8 0

2 years ago

Read 2 more answers

When 3-methyl-1-pentene is treated with in dichloromethane, the major product is 1-bromo-3-methyl-2-pentene.

Lubov Fominskaja [6]

Answer:

True

Explanation:

When Methyl Pentene is introduced in a chemical reaction with dichloromethane then the major product will be bromomethylpentene. There can be small amount of bromo methyl pentene than the amount of methyl pentene introduced for reaction.

3 0

3 years ago

The movement of Earth's tectonic plates is related to A. seasonal changes in weather systems. B. cycles of sunspots. C. movement

Ksenya-84 [330]

c) the movement of the materials in the mantle

8 0

3 years ago

What is the pH of a 1.0 x 10-4 M solution of KOH?

Svetach [21]

Answer:

pH = 10

Explanation:

KOH is a strong base; thus it will completely dissociate:

KOH -> K⁺ + OH⁻

Since it completely dissociates, the concentration of both K⁺ and OH⁻ will be the concentration of KOH given (1.0 x 10^-4 M).

We can then find pOH by taking the negative log of the OH⁻, or hydroxide, concentration:

pOH = -log[OH⁻] = -log[1.0 x 10^-4 M] = 4

At 25 degrees Celsius, pH + pOH = 14. If we solve for pH and then plug in our pOH, we get:

pH = 14 - pOH = 14 - 4 = 10

The pH of a 1.0 x 10^-4 M solution of KOH is thus 10.

7 0

3 years ago