All categories

2 years ago

If 250 g of calcium chlorate decomposes into calcium chloride and oxygen what mass of oxygen would be produced

Chemistry

1 answer:

Naya [18.7K]2 years ago

6 0

Answer:

115.936g

Explanation:

Ca(ClO3)2 -->CaCl2 +3 O2

One mole of calcium chlorate give up three moles of oxygen.

Molar mass of calcium chlorate is

40+(35.5+16*3)*2 = 207g/mol

Therefore there are

250g/207=

1.207mol of calcium cholrate...

So 1.207*3=3.623mol

Therefore 3.623mols of Oxygen must be produced.

Mass of the oxygen gas is equal to 3.623mol*32g/mol =115.936g

(O2 molar mass 32g/mol)

Cheers

You might be interested in

Many antacids contain solid calcium carbonate. Explain how antacids with calcium carbonate function.

Marat540 [252]

Calcium carbonate contains the carbonate ion. Citric acid is an acid. When an acid reacts with a carbonate, carbon dioxide gas is one of the products. Carbon dioxide gas produces the fizzing effect in water.

8 0

1 year ago

Read 2 more answers

Which of the following will ammonium ion form an insoluble salt? 4/16 a. chloride b. sulfate c. sulfate and carbonate d. carbona

Darina [25.2K]

Answer:

Explanation:

6 0

2 years ago

Item 5 A solution of methanol, CH3OH, in water is prepared by mixing together 128 g of methanol and 108 g of water. The mole fra

Basile [38]

Answer:

Mole fraction of methanol will be closest to 4.

Explanation:

Given, Mass of methanol = 128 g

Molar mass of methanol = 32.04 g/mol

The formula for the calculation of moles is shown below:

$moles = \frac{Mass\ taken}{Molar\ mass}$

Thus,

$Moles= \frac{128\ g}{32.04\ g/mol}$

$Moles\ of\ methanol = 3.995\ mol$

Given, Mass of water = 108 g

Molar mass of water = 18.0153 g/mol

The formula for the calculation of moles is shown below:

$moles = \frac{Mass\ taken}{Molar\ mass}$

Thus,

$Moles= \frac{108\ g}{18.0153\ g/mol}$

$Moles\ of\ water= 5.995\ mol$

So, according to definition of mole fraction:

$Mole\ fraction\ of\ methanol=\frac {n_{methanol}}{n_{methanol}+n_{water}}$

$Mole\ fraction\ of\ methanol=\frac{3.995}{3.995+5.995}=0.39989$

<u>Mole fraction of methanol will be closest to 4.</u>

5 0

1 year ago

What is the molarity of 4.35 moles kmno4 dissolved in 750 ml of solution?

Andreyy89

M= #moles / L

4.35/.75 = 5.6

7 0

1 year ago

What is the mass of solute in 200.0 L of a 1.556-M solution of KBr

sergejj [24]

The molarity of KBr solution is 1.556 M
molarity is defined as the number of moles of solute in volume of 1 L solution.
the number of KBr moles in 1 L - 1.556 mol
Therefore in 200.0 L - 1.556 mol/L x 200.0 L = 311.2 mol
Molar mass of KBr - 119 g/mol
mass of Kbr - 311.2 mol x 119 g/mol = 37 033 g
mass of solute therefore is 37.033 kg

4 0

1 year ago