How many moles are in a solution if I have 2.21 M of NaCl in 1.14 L?

A.1.12 mol

B.2.52 mol

C.4.15 mol

D.7.89 mol

Answers

Answer 1

Answer:

The correct answer is B.2.52 mol

Explanation:

The molarity of a solution (M) expresses the number of moles of solute there is in 1 liter of solution. If we have the molarity (M) and the volume in liters (L), we simply multiply M x V to obtain the moles, as follows:

M = 2.21 = 2.21 moles/L

V = 1.14 L

M x V = 2.21 moles/L x 1.14 L = 2.5194 moles ≅ 2.52 moles

Related Questions

2. What is the percent composition of Mg(IO3)2?

Answers

Answer:

Mass percentage 6.4967

Explanation:

I had some study notes

Antonio and Addie want to know if perfume fumes affect plant height. They place five identical bean plants in five identical light boxes. In four of the boxes, they place 200 milliliters (mL) of perfume at different distances from the plants, and they make observations twice a week for one month. Which choice best identifies the observation data that should be included in their data table?

Answers

Answer:

I think its C I'm sorry if I'm wrong good luck guys!

Explanation:

b. If you have 50 grams of Molybdenum-99, how many grams will remain
after 11 days?

Answers

Answer:

6.25gm

half life is 66hrs 11 days is 24*11 then take that and divide by 66 to find out how many time it will have halved and half 50 by that many times

Explanation:

If you have 50 grams of Molybdenum-99, after 11 days, 2.7 g will remain.

Molybdenum-99 follows first-order decay.

What is first-order decay?

First-order decay means that for a population of atoms (e.g. radioactive), molecules, or anything else, a constant fraction/unit time is converted to something else.

The half-life (th) of Mo-99 is 66 h.

We will find its rate constant (k) using the following expression.

k = ln2 / th = ln2 / 66 h = 0.011 h⁻¹

Next, we will convert 11 days to hours, knowing that 1 day = 24 h.

11 d × 24 h/1 d = 264 h

If we start with 50 g of Mo-99, we can calculate the remaining mass after 264 h using the following expression.

[tex][Mo] = [Mo]_0 \times e ^{-k \times t} }\\\\[Mo] = 50g \times e ^{-0.011 h^{-1} \times 264 h} } = 2.7 g[/tex]

where,

[Mo] is the final amount of Mo-99.[Mo]₀ is the initial amount of Mo-99.t is the elapsed time.

If you have 50 grams of Molybdenum-99, after 11 days, 2.7 g will remain.

Learn more about first-order decay here: https://brainly.com/question/14478152

Choose the combination of factors that creates fog. Record the description of the factors in the Student Guide,

Relative Humidity

Air Temperature

Air Pressure

Check

Pause

Answers

Answer:

Relative Humidity

Air Temperature

Explanation:

Relative humidity and air temperature are the factors that creates fog. When the moist and warm air makes contact with the cooler air, water vapor condenses due to low temperature of that region that causes for the formation of fog. So we can say that relative humidity and air temperature are the main factors for the formation of fog in that region.

Answer:

High Cold High

Explanation:

According to this video, how do scientists use data to study/monitor earthquakes and tsunamis?

Answers

Answer:

ewan ko po

Explanation:

sana makatulong

what is the chemical equation for methamphetamine

Answers

Answer:

C10H15N is the chemical equation for methamphetamine

The chemical formula for methamphetamine or meth is C10H15N

What is an electrolytic cell?

Answers

Answer:

An electrolytic cell is a cell that converts electrical energy into chemical energy.

Any device in which electrical energy is converted to chemical energy or vice versa is referred to as an electrolytic cell. A typical cell consists of two metallic or electronic conductors held apart and in contact with an electrolyte, which is usually a dissolved or fused ionic compound.

What is an electrolytic cell ?

An electrolytic cell is a type of electrochemical cell that uses an external source of electrical energy to force a chemical reaction that would not occur otherwise. A voltage applied between the cell's two electrodes, an anode and a cathode immersed in an electrolyte solution, serves as the external energy source.

Electrons in the form of an electric current are deliberately pumped through the chemicals in the section to induce an oxidation-reduction reaction. An electrolytic cell is a setup used to electrolytically decompose water into hydrogen and oxygen.

Electrochemical cells that generate an electric current are known as voltaic or galvanic cells, whereas those that generate chemical reactions, such as electrolysis, are known as electrolytic cells.

Thus, Any device in which electrical energy is converted to chemical energy or vice versa is referred to as an electrolytic cell.

To learn more about electrolytic cell, follow the link;

https://brainly.com/question/4030224

#SPJ5

What is delta Gº for the following reaction at 25 °C?
CO(g) + 2 H2(g) = CH OH(9)
Ky = 2.1 x 10-4

Answers

Answer:

21 kJ/mol

Explanation:

Step 1: Given and required data

Temperature (T): 25 °C (298 K)Equilibrium constant (Kc): 2.1 × 10⁻⁴Ideal gas constant (R): 8.314 J/K.mol

Step 2: Write the balanced equation at equilibrium

CO(g) + 2 H₂(g) ⇄ CH₃OH(g)

Step 3: Calculate the standard Gibbs free energy of the reaction (ΔG°)

We will use the following expression.

ΔG° = - R × T × ln Kc

ΔG° = - (8.314 J/K.mol) × 298 K × ln 2.1 × 10⁻⁴ = 2.1 × 10⁴ J/mol = 21 kJ/mol

3.Which of these is NOT part of the cell theory? * "

all living things are made of cells
Ocells come only from other cells
cells are the smallest living unit of an organism
O all living things have blood cells

Answers

Answer:

Cells are the smallest living unit of an organism

Answer:

all living things living things have blood cells

Explanation:

this is because robert hooke did not make this apart of the theory

How much would the temperature of a 34.2 g sample of argon gas decrease when 2.8 kJ of heat is removed?
Your answer should be in °C.

Answers

Answer:

8.90

Explanation:

because I calculated it

8.90 I hope I helped!!

Please help :) hope you have a good day

Answers

Have a wonderful day :) thanks for the points

Use Avogadro's number, 6.02E23, to calculate the number
of particles found in 0.004 moles of carbon dioxide
CO2

Answers

Answer:

2.408 × 10²¹ is the correct answer!!

(b) Why must acidic gases be treated before they are released into the atmosphere?

Answers

Answer:

because they react with other gases of atmosphere and pollute the environment

which of these is not a process of chemical weathering?

1.cracked sidewalk.

2.wearing away of the inscriptions on a New York City Monument.

3.Rusty Nail.

4.dissolving of limestone which makes caves.

Answers

A cracked sidewalk definitely isn’t a process of chemical weathering.

Which of these statements is false?
A. All matter is made up of atoms.
B. Atoms are made up of protons,
neutrons, and electrons.
C. Atoms contain chemical bonds.
D. Atoms are the smallest particles of
elements.

Answers

Answer:

C is the false one atoms contain chemical bonds

Answer:

C. Atoms contain chemical bonds.

Reason:

Atoms don't have any chemical bonds. Molecules are the particles have chemical bonds.

why is seawater a better conductor of electricity than freshwater?

Answers

Answer:

please refer to the attachment above;)

Answer:

Because it contains Na+ and Cl- ions, Which are conductors of electricity

Explanation:

help asap pls,
find the percent composition