What mass of NaCl solid should be added to 100mL of pure water to produce a 6.00M solution?

Answers

Answer 1

Answer: Molar mass NaCl : 58.44 g/mol

Volume = 100 mL / 1000 = 0.1 L

Molarity = 6.00 M

M = n / V

6.00 = n / 0.1

n = 6.00 * 0.1

n = 0.6 moles

1 mole NaCl ( 58.44 g/mol) * 0.6

mass = 58.44 * 0.6

mass = 35.064 g

hope this helps!

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If each fission reaction in a nuclear reactor emits three neutrons, how many neutrons are produced from three fission reactions? one
three
six
nine

Answers

Answer : The correct option is, Nine.

Explanation :

Nuclear fission : It is defined as the splitting of bigger nuclei into two smaller nuclei. During this process neutrons and some energy also released.

In nuclear reactor, neutron hits the uranium nucleus, the uranium nucleus splits into two nuclei and three neutrons. These three neutrons further hit the uranium nucleus and the uranium nucleus split into two nuclei and these 3 neutrons produces 9 neutrons.

The reaction for nuclear fission is,

$^(235)_(92)U+^1_0n\rightarrow ^(89)_(36)Kr+^(144)_(56)Ba+3^1_0n$

As, Each nuclear fission reaction produces 3 neutrons

So, three nuclear fission reaction produces 9 neutrons

If each fission reaction in a nuclear reactor emits three neutrons, 9 neutrons are produced from three fission reactions. The correct option is option D.

What is nuclear reactor?

A nuclear reactor comprises a device used to start and regulate nuclear chain reactions involving fission or nuclear fusion. Nuclear power plants employ nuclear reactors to produce energy, and they are also used in nuclear propulsion for ships. Nuclear fission transfers heat into a working fluid (such as water or gas), which then drives steam turbines.

In nuclear reactor, neutron hits the uranium nucleus, the uranium nucleus splits into two nuclei and three neutrons. These three neutrons further hit the uranium nucleus and the uranium nucleus split into two nuclei and these 3 neutrons produces 9 neutrons.

Therefore, the number of neutron is 9. The correct option is option D.

To know more about nuclear reactor, here:

brainly.com/question/12899500

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Corn, Cotton, Tobacco, and Wheat are examples of what?Question 3 options:

Plantations

Economies

Colonies

Cash Crops

Answers

Answer: cash crops

Explanation:

trust

Answer: Cash Crops

Explanation: These crops were used in the south to make loads of money before the civil war in southern plantations so they were known as cash crops

Is zinc coMpund Plz help me

Answers

Answer:

it is indeed a compound

Explanation:

Zinc is NOT a compound.

A compound contains two or more elements or molecules like H2O. Where H is 1 element and Oxygen is another and together they make a compound.

Zinc itself is a single molecule (or element) and can be used in a compound like ZnO (zinc oxide)

When 2 mol of Fe(s) reacts with Cl2(g) to form FeCl3(s) according to this equation, 799 kJ of energy is evolved. Calculate ΔrHo. A) -399.5 kJ mol^-1 B) -199.75 kJ mol^-1 C) 399.5 kJ mol^-1 D) 199.75 kJ mol^-1

Answers

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If 2.0 moles of a substance are dissolved in 2.0 liters of solution, then the molarity of this solution is:0.5 M

1.0 M

1.5 M

2.0 M

Answers

There are a number of ways to express concentration of a solution. This includes molarity. Molarity is expressed as the number of moles of solute per volume of the solution. The concentration of the solution is calculated as follows:

Molarity = 2.0 moles / 2.0 L

Molarity = 1.0 M

Answer:

1.0 M

Explanation:

Hello,

Molarity is a unit of concentration accounting for the amount of the moles of a solute per liter of solution as shown below:

$M=(n_(solute))/(V_(solution))$

In such a way, given the information on the statement, the resulting molarity turns out into:

$M=(2.0 mol)/(2.0 L)=1.0(mol)/(L)=1.0M$

Do not forget that mol per liters means molar units (M) as well.

Best regards.

Limitation of the kinetic-molecular theory for a gas?

Answers

The following are some of the limitations of the kinetic-molecular theory for a gas:
- molecules do not have to be spherical.
- a gas will occupy volume than predicted
- there are reactions that can occur between gases, otherwise they wouldn't liquefy.

I hope this helps you

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Given the balanced equation representing a reaction: 2na(s) + cl2(g) → 2nacl(s) + energy if 46 grams of na and 71 grams of cl2 react completely, what is the total mass of nacl produced? 1. 58.5 g 2. 117 g 3. 163 g 4. 234 g

Which of the following processes are exothermic and which are endothermic? a) frost forms on a car window in winter; b) water condenses on a glass of ice water on a humid summer afternoon; c) adding ammonium nitrate to water causes the temperature of the solution to decrease

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