2NaCl + H2SO4 --> 2HCl + Na2SO4How many grams of HCl can be prepared from 2.00 mol H2SO4 and 2.56 mol NaCl?

a. 7.30 g
b. 93.3 g
c. 146 g
d. 150 g
e. 196 g

Answers

Answer 1

Answer: $\frac{2.00}1=2.00,(2.56)/(2)=1.28<2.00$ hence NaCl is the limiting reagant.

One mole of NaCl yields one mole of HCl, hence we'll make at most $2.56*(1.00+35.5)=93.4g$

That would be answer B (the difference probably comes from the molar mass of Cl that I chose, 35.5, whereas some prefer to take 35.4)

Answer 2

Answer:

Final answer:

The question tackles stoichiometry, a Chemistry concept used to calculate reactant or product amount. Given 2 moles of H2SO4 and 2.56 moles of NaCl, the H2SO4 is limited, resulting in 4 moles of HCl. The weight of 4 moles of HCl is 146 g, thus, the answer is c. 146 g.

Explanation:

The subject of this question is stoichiometry, a method used in Chemistry to calculate the amount of reactants or products in a particular chemical reaction. According to the balanced equation, 2 moles of NaCl react with 1 mole H2SO4 to yield 2 moles of HCl. Meaning, 1 mole of H2SO4 can only react effectively with 2 moles NaCl. However, we have 2.56 mol of NaCl. This means that the H2SO4 is the limiting reagent. Thus, 2 mol H2SO4 will yield 4 mol of HCl (since it's 2:2 ratio).
The molecular weight of HCl is 36.5 g/mol. Therefore, the weight of 4 moles of HCl is 4 mol * 36.5 g/mol = 146 g. Thus, the correct answer is c. 146 g.

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What element is a nickle

Answers

Answer: Element Nickel (Ni), Group 10, Atomic Number 28, d-block, Mass 58.693

1. Jack consumes two slices of pizza and drinks two large glasses of soda. Half an hour later, he complains of a stomachache. What is the most likely reason for Jack's upset stomach?A. Soda and lactose from the cheese combined and slowed enzyme activity.
B. Soda mixed with the pizza sauce and sped up digestive enzyme activity.
C. Soda raised the pH in his stomach and sped up digestive enzyme activity.
D. Soda lowered the pH in his stomach and slowed digestive enzyme activity.

2. Which factor decreases the rate of a chemical reaction?
A. An inhibitor
B. A co-factor
C. Increased substrate
D. Cold temperature

3. Which component decreases the activation energy of a chemical reaction?
A. An inhibitor solution
B. Presence of an enzyme
C. Lower substrate concentration
D. Neutral pH levels

4. A biologist adds a vitamin solution to an enzyme/substrate solution that requires co-factors. What will happen to the substrate?
A. The vitamins will bond to the enzymes and increase their reactivity with the substrates.
B. The vitamins will bond to the enzymes and decrease their reactivity with the substrates.
C. The substrate molecules will bond to the vitamin molecules and inhibit bonding of the enzyme.
D. The substrate molecules will bond to the vitamin molecules and stimulate bonding of the enzyme.

5. Jennifer stews peaches to make peach jelly. She believes the homemade jelly will make a healthy treat full of vitamins and enzymes her body needs. Which of the following disproves her prediction?
A. The peaches don't contain enzymes.
B. The jelly has too much sugar to be healthy.
C. The enzymes in the peaches have denatured.
D. The vitamins in the peaches will inhibit the enzymes.

6. What statement best describes what happens during the catalytic cycle?
A. The enzyme breaks the substrate apart to prepare for the reaction.
B. The enzyme positions the substrate to increase access during a reaction.
C. The substrate uses enzyme energy to start the reaction.
D. The active site releases the substrate and replaces it with an inhibitor.

Answers

Answer 1) Option D) Soda lowered the pH in his stomach and slowed digestive enzyme activity.

Explanation : Consuming soda after eating pizza lowered the pH of the stomach which consequently, slowed the digestive enzyme activity in the stomach. The enzymes actively digest the food only in highly acidic environment.

Answer 2) Option A) An inhibitor

Explanation : An inhibitor is a substance usually added to a progressing chemical reaction to decrease the rate of reaction and finally stop the reaction.

Answer 3) Option B) Presence of an enzyme

Explanation : When an enzyme is added to a chemical reaction it is often seen that it lowers the energy of activation and catalyzes the reaction. So, enzyme acts as a catalyst and increases the reaction rate.

Answer 4) Option A) The vitamins will bond to the enzymes and increase their reactivity with the substrates.

Explanation : When the biologists adds a vitamin solution to an enzyme or a substrate solution the bonding will take place between vitamins and enzymes and as a result it will increase the reactivity of the substrates.

Answer 5) Option C) The enzymes in the peaches have denatured.

Explanation : When enzymes are stewed or rather boiled they become denatured and the bonds between them breaks, which makes the enzyme useless. Hence, proteins should be eaten raw without boiling at higher temperatures.

Answer 6) Option A) The enzyme breaks the substrate apart to prepare for the reaction.

Explanation : In a catalytic reaction the enzymes usually break the substrate and create more surface area for the reaction to occur.

1) D
2) A
3) B
4) A
5) C
6) A

Which of the following summarizes photosynthesis?A. glucose + carbon dioxide → oxygen + water
B. carbon dioxide + water → glucose + oxygen + water
C. oxygen + water → glucose + carbon dioxide + water
D. carbon dioxide + oxygen → glucose + oxygen + water

Answers

Answer : The correct option is, (B) $\text{carbon dioxide}+\text{water}\rightarrow \text{glucose}+\text{oxygen}+\text{water}$

Explanation :

Photosynthesis : It is a type of process which takes place in the plant cell. In this process the light energy converted into chemical energy.

As we know that the plant needs carbon dioxide, water and light. During the photosynthesis the carbon dioxide, water and sunlight react to gives glucose, oxygen and water as a product.

The balanced reaction will be,

$6CO_2+12H_2O\overset{sunlight}\rightarrow C_6H_(12)O_6+6O_2+6H_2O$

Hence, the correct option is, (B) $\text{carbon dioxide}+\text{water}\rightarrow \text{glucose}+\text{oxygen}+\text{water}$

The answer is B because that is how plants give off oxygen.

Which barium salt is insoluble in water?A) BaCO3. B) BaCl2
C) Ba(ClO4)2. D) Ba(NO3)2

Answers

$\boxed{{\text{A) BaC}}{{\text{O}}_{\text{3}}}}$ is insoluble in water.

Further Explanation:

Solubility rules

These help in predicting whether the given compound is soluble or insoluble in nature. Some of the solubility rules are as follows:

1. Group 1A compounds are soluble in nature.

2. All the common compounds of ammonium ion and all acetates, chlorides, nitrates, bromides, iodides, and perchlorates are soluble in nature. But the ions whose chlorides, bromides, and iodides are not soluble are ${\text{A}}{{\text{g}}^ + }$ , ${\text{P}}{{\text{b}}^(2 + )}$ , ${\text{C}}{{\text{u}}^ + }$ and ${\text{Hg}}_2^(2 + )$ .

3. All common fluorides, except for ${\text{Pb}}{{\text{F}}_{\text{2}}}$ and group 2A fluorides are soluble. Also, all sulfates except ${\text{CaS}}{{\text{O}}_{\text{4}}}$ , ${\text{SrS}}{{\text{O}}_{\text{4}}}$ , ${\text{BaS}}{{\text{O}}_{\text{4}}}$ , ${\text{A}}{{\text{g}}_{\text{2}}}{\text{S}}{{\text{O}}_{\text{4}}}$ and ${\text{PbS}}{{\text{O}}_{\text{4}}}$ are soluble.

4. All common metal hydroxides except ${\text{Ca}}{\left( {{\text{OH}}} \right)_{\text{2}}}$ , ${\text{Sr}}{\left( {{\text{OH}}} \right)_{\text{2}}}$ , ${\text{Ba}}{\left( {{\text{OH}}} \right)_{\text{2}}}$ and hydroxides of group 1A and that of transition metals are insoluble in nature.

5. All carbonates are insoluble in nature, except for sodium, potassium and ammonium.

6. Salts having ions like $\text{Cl}^-$ , $\text{Br}^-$ or $\text{I}^-$ are generally soluble except those of $\text{Ag}^+$ , $\text{Pb}^(2+)$ and ${\left( {{\text{H}}{{\text{g}}_2}} \right)^{{\text{2 + }}}}$ .

7. Group 1A and group 2A perchlorates are soluble in nature.

8. All sulfates of metals are soluble, except for lead, mercury (I), barium, and calcium sulfates.

9. The salts having nitrate ions are soluble in nature.

According to the solubility rules, only carbonates of sodium, potassium and ammonium are soluble in nature. So barium carbonate $\left( {{\text{BaC}}{{\text{O}}_{\text{3}}}} \right)$ is insoluble in nature. But chlorides, nitrates and perchlorates of barium are soluble in water. Therefore option A is the correct answer.

Learn more:

Identify the precipitate in the reaction: brainly.com/question/8896163
What type of reaction occurs by mixing barium sulfide and sulfuric acid? brainly.com/question/5464325

Answer details:

Grade: Senior School

Chapter: Chemical reaction and equation

Subject: Chemistry

Keywords: barium, water, insoluble, solubility rules, soluble, insoluble, water, BaCO3.

BaCO₃ is generally considered insoluble in water. Carbonates are often insoluble, except for some alkali metals and ammonium carbonates. Therefore, option A is correct.

The solubility of salt depends on its nature and the interactions between its ions and water molecules. In this case, determine the solubility of each salt by considering the common solubility rules.

BaCl₂ is soluble in water. Chlorides (Cl-) are mostly soluble except for a few exceptions, such as silver chloride, lead chloride, and mercury(I) chloride.

Ba(ClO₄)₂ is soluble in water. Perchlorates (ClO4-) are typically soluble.

Ba(NO₃)₂ is soluble in water. Nitrates (NO3-) are mostly soluble.

Based on the solubility rules, the salt that is insoluble in water is BaCO₃ (barium carbonate).

To learn more about the solubility, follow the link:

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The kinetic molecular theory assumes that the particles of an ideal gas(1) are in random, constant, straight-line motion
(2) are arranged in a regular geometric pattern
(3) have strong attractive forces between them
(4) have collisions that result in the system losing energy

Answers

Option no.1 are in random, constant, straight-line motion

Following assumptions:
a. number of molecular size is very large, but their separation is very large compared to their molecular size.
b. randomly distribution of molecules in which their speed does not change
c. molecules undergo elastic collision with other molecules but exert no force
d. molecules followed Newton's laws of motion

Give the number of valence electrons for each of the following: Ba, Al, P, Se, Br, K