In a solution made by dissolving 50 grams of calcium chloride in 1000 grams of water, which component is considered to be the solute?

Answers

Answer 1

Answer: Calcium chloride is the solute because it was dissolved in water.
Therefore water is the solvent.

Answer 2

Answer: Solute is a particle which gets dissolved in a solution. It is usually smaller than solvent in quantity.

Solvent is a particle which dissolves Solute in a solution. It is usually larger than solute in quantity.

In your case above, Calcium chloride is in less quantity, and thus, Calcium chloride shall be called solute.

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Determine the density of CO2 gas at STP.

Answers

The ideal gas law is presented by the equation PV = nRT. n, the number of moles, is equal to mass over molar mass. And density is M/V.

PV = nRT

PV = (M/molar mass)RT

P/RT = (1/molar mass)(M/V)

M/V = D = (molar mass)(P/RT)

Molar mass of CO2 = 44 g/mol

D = (molar mass)(P/RT)

D = (44 g/mol)(1 atm)/(0.08206 L-atm/mol-K)(273K)

D = 1.964 g/L

What mass of sodium nitrate is dissolved in 126 g of a solution that is 14.8% by mass of the compound?

Answers

Answer:

there are 18.65 grams of sodium nitrate dissolved in 126 grams of the solution that is 14.8% by mass of the compound.

Explanation:

To find the mass of sodium nitrate dissolved in the solution, we can use the concept of percent composition.

First, we need to determine the mass of the solution that is made up of sodium nitrate. Since the solution is 14.8% by mass of the compound, we can calculate this by multiplying the total mass of the solution by the percentage:

Mass of sodium nitrate in solution = (14.8/100) * 126 g

Mass of sodium nitrate in solution = 18.65 g

Therefore, there are 18.65 grams of sodium nitrate dissolved in 126 grams of the solution that is 14.8% by mass of the compound.

The incomplete breakdown of fat that occurs when carbohydrates are not available produces

Answers

Answer;

Ketone bodies

Explanation;

Ketone bodies are produced by the liver and used peripherally as an energy source when glucose is not readily available.
They are produced from acetyl-CoA, mainly in the mitochondrial matrix of liver cells when carbohydrates are so scarce that energy must be obtained from breaking down of fatty acids.
Tissues that can use fatty acids can generally use ketone bodies in addition to other energy sources. The exceptions are the liver and the brain.

Which of these scenarios involve a reaction that is at equilibrium? a. the reaction is producing reactants and products at an equal rate.
b. the reaction is producing more reactants than products.
c. the reaction is only producing products
d. the reaction is producing more products than reactants.

Answers

at equilibrium the reaction is producing reactants and product at an equal rate so option A is correct hope this helps

Answer:

a. the reaction is producing reactants and products at an equal rate. is the correct answer.

Explanation:

If a reaction is at equilibrium then the reaction rates for both the reverse and forward directions are equal.

catalyst that increases the reaction rate of a reaction, but it does not change the equilibrium state for that reaction.

Thus at the equilibrium stage, the concentration of the reactants and the product remain constant.

Which nuclear emission is negatively charged?(1) an alpha particle
(2) a beta particle
(3) a neutron
(4) a positron

Answers

The nuclear emission that is negatively charged is $\boxed{{\text{2}}{\text{. a beta particle}}}$ .

Further Explanation:

Radioactive decay:

Also known as nuclear decay, radioactivity, nuclear or radioactive disintegration. It is the process due to which an unstable atomic nucleus releases its energy in the form of various particles such as alpha particles, beta particles, and gamma particles.

Following are the types of radioactive decays:

1. Alpha decay

In this decay, alpha particles are emitted by unstable nuclei. An alpha particle is a helium nucleus with two protons and two neutrons. It has a charge of +2. The general equation for an alpha decay is as follows:

$_{\text{Z}}^{\text{A}}{\text{X}} \to _{{\text{Z - 2}}}^{{\text{A - 4}}}{\text{X}} + _{\text{2}}^{\text{4}}{\text{He}}$

2. Beta decay

In this decay, beta particles are produced. This occurs when the nucleus decays continuously and emits an electron or a positron. The general equation for beta decay is as follows:

$_{\text{Z}}^{\text{A}}{\text{X}} \to _{{\text{Z + 1}}}^{\text{A}}{\text{X}} + _{{\text{ - 1}}}^{\text{0}}{\beta }}$

Beta decay is further classified as follows:

(a) ${\beta }}^-}$ decay: In this decay, an electron and an electron antineutrino are emitted. The atomic number of the element is increased by one. Its general equation is as follows:

$_{\text{Z}}^{\text{A}}{\text{X}}\to _{{\text{Z+1}}}^{\text{A}}{\text{X}}+{e^-}+{\mathop{\text{v}}\limits^-_{\text{e}}}$

(b) ${\beta }}^+}$ decay or positron emission: In this decay, a positron and an electron neutrino are emitted. The atomic number of the element is decreased by one. Its general equation is as follows:

$_{\text{Z}}^{\text{A}}{\text{X}} \to _{{\text{Z}} - 1}^{\text{A}}{\text{X}}+{e^+}+{{\text{v}}_{\text{e}}}$

3. Gamma decay

In this decay, gamma rays are emitted. Energy is emitted during gamma decay but the number of protons remains unaltered. The general equation for gamma decay is as follows:

$_{\text{Z}}^{\text{A}}{\text{X}} \to _{\text{Z}}^{\text{A}}{\text{X}} + _{\text{0}}^{\text{0}}{{\gamma }}$

4. Neutron emission

It is the type of radioactive decay that occurs when one or more neutrons are ejected from a nucleus. Neutrons are the subatomic particles with no charge. Since only neutrons are removed from the atom, the number of protons as well electrons remain unaltered. This results in the formation of an isotope of the same element.

Therefore the negatively charged nuclear emission is a beta particle because an electron that is a negatively charged species is lost in ${\beta }}^-}$ decay, a type of beta decay.

Learn more:

1. What nuclide will be produced in the given reaction? brainly.com/question/3433940

2. Calculate the nuclear binding energy: brainly.com/question/5822604

Answer details:

Grade: Senior School

Subject: Chemistry

Chapter: Nuclear chemistry

Keywords: alpha particle, beta particle, gamma decay, positron, negatively charged, neutron emission, radioactivity, radioactive decay, unstable atomic nucleus.

a beta particle is negatively charged

The mass number of an isotope of uranium is 238, and its atomic number is 92. Which symbol best represents this isotope of uranium?