Is the law of conservative mass observed in this equation CaCO3 + 2HCI -->CaCI2 +H2O + CO2

Answers

Answer 1

Answer:

Answer:

The law is observed in the given equation.

Explanation:

CaCO₃ + 2HCI → CaCI₂ +H₂O + CO₂

In order to find out if the law of conservative mass is followed, we need to count how many atoms of each element are there in both sides of the equation:

Ca ⇒ 1 on the left, 1 on the right.

C ⇒ 1 on the left, 1 on the right.

O ⇒ 3 on the left, 3 on the right.

H ⇒ 2 on the left, 2 on the right.

Cl ⇒ 2 on the left, 2 on the right.

As the numbers for all elements involved are the same, the law is observed in the given equation.

Related Questions

What makes physical change a physical change and a chemical change a chemical change
Which element is oxidized in the following reaction Mn²⁺ + 2 K → Mn(s) + 2 K⁺ ?
Modify methionine, below to show its zwitterion form. How do I make Methionine into a zwitterion?
suspension are mixtures composed of materials that are visible to the naked eyes true or false? in science subject
Ri1. Among these which is the example of compound?a) sulphurb) ironc) ammoniader

Calculate the pH of a buffer solution made by adding 15.0 g anhydrous sodium acetate (NaC2H3O2) to 100.0 mL of 0.200 M acetic acid. Assume there is no change in volume on adding the salt to the acid. (pKa for acetic acid is 4.74 or Ka is 1.8 x 10-5)3.

Answers

Answer:

pH of Buffer Solution 5.69

Explanation:

Mole of anhydrous sodium acetate = $(Given mass)/(Molecular mass)$

= $(15)/(82)$

= 0.18 mole

100 ml of 0.2 molar acetic acid means

= M x V

= 0.2 x 100

= 20 mmol

= 0.02 mole

Using Henderson equation to find pH of Buffer solution

pH = pKa + log $([Salt])/([Acid])$

= 4.74 + log $(0.18)/(0.02)$

= 4.74 + log 9

= 5.69

So pH of the Buffer solution = 5.69

A 3.25 L solution is prepared by dissolving 285 g of BaBr2 in water. Determine the molarity.

Answers

Answer:

0.295 mol/L

Explanation:

Given data:

Volume of solution = 3.25 L

Mass of BaBr₂ = 285 g

Molarity of solution = ?

Solution:

Molarity is used to describe the concentration of solution. It tells how many moles are dissolve in per litter of solution.

Formula:

Molarity = number of moles of solute / L of solution

Number of moles of solute:

Number of moles = mass/ molar mass

Molar mass of BaBr₂ = 297.1 g/mol

Number of moles = 285 g/ 297.1 g/mol

Number of moles= 0.959 mol

Molarity:

M = 0.959 mol / 3.25 L

M = 0.295 mol/L

Final answer:

The question is about calculating the molarity of a solution. First, convert the given mass of solute into moles using the molar mass. Then, using the molarity formula, divide the moles of solute by the volume of the solution in liters.

Explanation:

In order to determine the molarity of the solution, we will divide the amount of solute (in moles) by the volume of the solution (in liters). The formula for molarity (M) is:

M = moles of solute/volume of solution in liters

First, we need to convert the mass of BaBr2 into moles. The molecular weight of BaBr2 is 297.14 g/mol. So, 285 g of BaBr2 is equal to 285/297.14 = 0.959 moles.

The volume of the solution is given as 3.25 L. So, plugging these values into the formula gives us the molarity of the solution:

M = 0.959 moles/3.25 L = 0.295 M

So, the molarity of the solution is 0.295 M.

Learn more about Molarity here:

brainly.com/question/31815736

#SPJ6

Why was plastic first invented? How is plastic bad for the environment?

Answers

Answer: The first plastic based on a synthetic polymer was invented in 1907. Plastic sticks around in the environment for ages, threatening wildlife and spreading toxins.

Not sure how it was invented but it had for the environment cause it causes plastic particles killing anything or endangering those that consume it.

Calculate the partial pressure of each gas and the total pressure if the temperature of the gas is 21 ∘C∘C. Express the pressures in atmospheres to three significant digits separated by commas.

Answers

The question is incomplete, complete question is ;

A deep-sea diver uses a gas cylinder with a volume of 10.0 L and a content of 51.8 g of $O_2$ and 33.1 g of He. Calculate the partial pressure of each gas and the total pressure if the temperature of the gas is 21°C.Express the pressures in atmospheres to three significant digits separated by commas.

Answer:

Partial pressure of the oxygen gas is 3.91 atm.

Partial pressure of the helium gas is 20.0 atm

Total pressure of the gases is 24.0 atm

Explanation:

Moles of oxygen gas = $n_1=(51.8)/(32 g/mol)=1.619 mol$

Moles of helium gas = $n_2=(33.1 g)/(4 g/mol)=8.275 mol$

Total moles of gas = $n_1+n_2=(1.619 +8.275 ) mole=9.894 mol$

Volume of the cylinder = V = 10.0 L

Total pressure in the cylinder = P = ?

Temperature of the gas in cylinder = T = 21°C = 21 + 273 K = 294 K

PV = nRT ( ideal gas equation )

$P=(nRT)/(V)$

$=(9.894 mol* 0.0821 atm L/mol K* 294 K)/(10.0 L)$

P = 23.88 atm ≈ 23.9

Partial pressure of the individual gas will be determined by the help of Dalton's law:

partial pressure = Total pressure × mole fraction of gas

Partial pressure of the oxygen gas

$p_(1)=P* \chi_(1)=P* (n_1)/(n_1+n_2)$

$p_1=23.88 atm* (1.619 mol)/(9.894 mol)=3.91 atm$

Partial pressure of the helium gas

$p_(2)=P* \chi_(2)=P* (n_2)/(n_1+n_2)$

$p_2=23.88 atm* (8.275 mol)/(9.894 mol)=19.97 atm\approx 20.0 atm$

The theoretical yield for CuCO3.Cu(OH)2+2h2SO4 ®2CuSO4+2H2O+3CO2

Answers

Answer:

bxnhdjxjdjvxjsj sbdhhxhchdbd

Assuming that the distances between the two ions are the same in all cases, which of the following ion pairs has the greatest electrostatic potential energy (i.e., largest in magnitude)? Please explain your answer.a.) Na+ - Cl- b.) Na+ - O-2. c.) Al+3 - O-2. d.) Mg+2-O-2 e.) Na- -Mg+2