When two intermediate chemical equations are combined, the same substance that appears in the same phase can be canceled out, provided thatA) it is a reactant in one intermediate reaction and a catalyst in the other reaction.
B) it is a product in one intermediate reaction and a catalyst in the other reaction.
C) it is a reactant in one intermediate reaction and a product in the other reaction.
D) it is a reactant in both of the intermediate reactions.

Answers

Answer 1
Answer:

Answer: Option (C) is the correct option.

Explanation:

When two intermediate chemical equations are combined, the same substance that appears in the same phase can be canceled out, provided that   it is a reactant in one intermediate reaction and a product in the other reaction.

For example,

2Al(s) + 2KOH(aq) + 6H_(2)O\rightarrow 2KAl(OH)_(4)(aq)+ 3H_(2)(g) ....(1)

2KAl(OH)_(4)(aq) + 4H_(2)SO_(4)(aq) + 6H_(2)O(l)\rightarrow 2KAl(SO_(4))_(2)(aq)+ 12H_(2)O(s)  .........(2)

Cancelling the common species in both the equations as follows.

2Al(s) + 2KOH(aq) + 6H_(2)O\rightarrow \not{2KAl(OH)_(4)(aq)}+ 3H_(2)(g)

\not{2KAl(OH)_(4)(aq)}+ 4H_(2)SO_(4)(aq) + 6H_(2)O(l)\rightarrow 2KAl(SO_(4))_(2)(aq)+ 12H_(2)O(s)

Therefore, on addition we get the equation as follows.

2Al(s)+ 2KOH(aq) + 4H_(2)SO_(4)(aq) + 22H_(2)O(l)\rightarrow 3H_(2)(g)+ 2KAl(SO_(4))_(2) + 12H_(2)O(s)


Answer 2
Answer: The right answer for the question that is being asked and shown above is that: "C) it is a reactant in one intermediate reaction and a product in the other reaction." When two intermediate chemical equations are combined, the same substance that appears in the same phase can be canceled out, provided that it is a reactant in one intermediate reaction and a product in the other reaction.

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The amount of energy a person can consume throughout the day without gaining weight is extremely dependent onA. hunger.
B. appetite.
C. culture.
D. activity level.

Answers

I'm quite sure it's activity level. One other thing that could've been said is metabolism, but that isn't there. However, food is consumed for the body to have energy, and without that energy we wouldn't be able to function. And when we let that intake of food settle, it's stored as fat. But because of activity level, we are capable of burning those calories. 

D is the answer you are looking for. 

Which of the following would most likely result in an increase in reaction rate? placing the reactants on a hotplate placing the reactants in an ice bath
placing the products in an ice bath

Answers

Answer:

placing the reactants on a hot plate

Explanation:

If the temperature goes up, the reaction rate will increase. Because the particle will move faster and makes the kinetic energy larger.

A solution with a pH of 8.0 isa. acidic.
b. neutral.
c. weakly basic.
d. strongly basic.

Answers

A solution with a pH of 8.0 is weakly basic. Thus ,the correct option is C.

The pH scale gives the measure of the acidity or basicity of a solution. It ranges from 0 to 14, where a pH of 7 is considered neutral. Solutions which have a pH less than 7 are acidic, while solutions which have  a pH greater than 7 are basic.

In this case, since the pH is 8.0, which is greater than 7, the solution is basic. However, it is important to note that the basicity of the solution is weak, as it is only slightly above neutral.

For example, think of a pH of 8.0 as being similar to water from a freshwater lake. It's not strongly basic like bleach or ammonia, but it still has a slightly basic nature compared to a neutral solution.

Thus, the correct option is C.

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c. weakly basic. the higher the pH, the more basic/ alkalo

__________ is one of many factors that can determine the rate of alcohol absorption.

Answers

Food consumption affects the rate of alcohol absorption in the bloodstream.

Explanation:

The type of food and therefore the amount of food that is a gift in your epithelial duct once you consume alcohol have the foremost direct impact on the speed of alcohol absorption.

When you consume alcohol on the associate empty abdomen, the alcohol is sometimes absorbed within the blood among fifteen minutes to two-and-a-half hours. If you have got a moderate quantity of food in your abdomen once you drink, that speed slows all the way down to thirty minutes to a few hours. If you’re drinking on a full abdomen, alcohol absorption ranges from 3 to 6 hours.

Answer: The answer is C. Food.

A lawyer (who understands chemistry) is hosting a party, and serving iced tea. She plans to serve sugar for the tea. i. What is the solvent?

Answers

Final Answer:

The solvent in iced tea is water.

Explanation:

In the context of chemistry, a solvent is a substance that has the ability to dissolve other substances, known as solutes, to form a homogeneous mixture called a solution. In the case of iced tea, the primary component of the drink is water. Water serves as the solvent because it has the capability to dissolve various solutes, including sugar, tea leaves or tea bags (which contain soluble compounds), and any flavorings that may be added to the tea.

When making iced tea, one typically starts by brewing a concentrated tea solution by steeping tea leaves or tea bags in hot water. The hot water allows the soluble compounds in the tea leaves to dissolve into the liquid, creating a tea concentrate. Afterward, this concentrate is typically diluted with cold water and sweetened to taste using sugar or another sweetener. The sugar, being a solute, dissolves in the water (solvent) to create a sweet tea solution.

So, in the case of iced tea, the solvent that dissolves the solutes (tea compounds, sugar, and flavorings) is water. Water is commonly used as a solvent in many beverages and chemical processes due to its excellent ability to dissolve a wide range of substances.

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Answer:

Since the lawyer is serving iced tea, the solvent in this case is the tea itself.

Explanation:

A solvent is the liquid that dissolves another substance. The tea is the liquid into which the sugar will dissolve.

Determine the pH of a 1x10^-4 M solution of HCl.

Answers

The HCl is a strong acid, that is, it is fully consumed in the reaction.

HCl(aq) ------------> H
₃O⁺(aq)   + Cl⁻(aq)
 ↓                                   ↓                    ↓
 1x10⁻⁴ M                      0                    0
-1 x 10⁻⁴                  + 1 x 10⁻⁴      +1 x 10⁻⁴
_____________________________________
0                                 + 1 x 10⁻⁴  M       + 1 x 10⁻⁴  M

PH = - log [ H
₃O⁺ ]

PH = - log [ 1 x 10⁻⁴]

PH =  4.0

hope this helps!