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3 years ago

Enter a balanced equation for the dissolution of caco3.

Chemistry

1 answer:

Tatiana [17]3 years ago

5 0

Answer:

CaCO3(aq) → Ca2+(aq ) + CO3 2-(aq)

Explanation:

Dissolution reactions are reactions that occur when a solute either in gaseous, liquid, or solid form dissolves in a solvent such as water to form a solution.
In this case we are given Calcium carbonate (CaCO3) which undergoes dissolution according to the equation;
CaCO3(aq) → Ca2+(aq ) + CO3 2-(aq)
Then the bicarbonate ion combines with two protons from water to form a weak acid H2CO3. The weak acid is then broken down to form CO2 and H2O since its unstable.

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What part of an atom has no relative mass

Debora [2.8K]

Answer: Electrons

Explanation:

Most of an atoms' mass comes from the protons and neutrons that make up its nucleus. Electrons have the least mass of an atom's particles.

4 0

3 years ago

Read 2 more answers

Question 4 (1 point)

Rainbow [258]

а о

Explanation:

The given cation:

(Rf₂Al₂F₃)³⁺

The oxidation number gives the extent to which a specie is oxidized in a reaction.

This number is assigned based on some rules:

Elements in combined state whose atoms combines with themselves have an oxidation number of zero.
The charge carried on simple ions gives their oxidation number.
Algebraic sum of all the oxidation numbers of atoms in neutral compound is zero. In an ion with more than one kind of atom, the charge on it is the oxidation number.

for the specie given;

Known:

oxidation number of Al = +3

F = -1

charge = +3

let the oxidation number of Rf = k

2k + 2(3) + 3(-1) = +3

2k + 6 - 3 = 3

2k = 0

k = 0

The oxidation state of rutherfodium is 0

learn more:

Oxidation state brainly.com/question/10017129

#learnwithBrainly

8 0

4 years ago

Hydrogen has a volume of 1.0l and the pressure is 5.4 ATM if the initial temperature is 33 degrees c the final volume is 2.0 l a

Andre45 [30]

Answer:

487.33 K.

Explanation:

To calculate the no. of moles of a gas, we can use the general law of ideal gas: PV = nRT.

where, P is the pressure of the gas in atm.

V is the volume of the gas in L.

n is the no. of moles of the gas in mol.

R is the general gas constant.

T is the temperature of the gas in K.

If n is constant, and have two different values of (P, V and T):

P₁V₁T₂ = P₂V₂T₁

P₁ = 5.4 atm, V₁ = 1.0 L, T₁ = 33°C + 273 = 306 K.

P₂ = 4.3 atm, V₂ = 2.0 L, T₂ =??? K.

∴ T₂ = P₂V₂T₁/P₁V₁ = (4.3 atm)(2.0 L)(306 K)/(5.4 atm)(1.0 L) = 487.33 K.

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3 years ago

PLEASE HURRY TIME LIMIT WILL GIVE BRAINLIEST A solution is made using 80.1 g of toluene (MM = 92.13 g/mol) and 80.0 g of benzene

Tom [10]

10.9 because of mass= moles/mv it’s just basic chemistry

7 0

3 years ago

Calculate the number of grams of sodium chloride in the solution. (Hint: Remember that sodium chloride is a strong electrolyte.)

creativ13 [48]

The question is incomplete, here is the complete question:

A solution contains 0.115 mol $H_2O$ and an unknown number of moles of sodium chloride. The vapor pressure of the solution at 30°C is 25.7 torr. The vapor pressure of pure water at this temperature is 31.8 torr. Calculate the number of grams of sodium chloride in the solution. (Hint: Remember that sodium chloride is a strong electrolyte.)