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2 years ago

A covalent compound is formed when a chemical reaction occurs between atoms of

Chemistry

2 answers:

quester [9]2 years ago

5 0

A covalent compound is formed when a chemical reaction occurs between atoms of separate molecules

den301095 [7]2 years ago

5 0

A covalent compound is formed when a chemical reaction occurs between atoms of nonmetals

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During one researcher's experiment, the total mass of the gas-generating solid and entire assembly was 52.1487g before the react

irinina [24]

Answer:

43.93 g/mol

Explanation:

The mass of the gas before reaction = 52.1487 g

The mass of the gas after reaction = 52.1098 g

Mass of gas generated = 0.0389 g

Moles of the gas = $8.854\times 10^{-4}\ moles$

The formula for the calculation of moles is shown below:

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

Thus,

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

$Molar\ mass= \frac{0.0389\ g}{8.854\times 10^{-4}\ moles}$

Molar mass of the gas = 43.93 g/mol

7 0

3 years ago

Given the following equation: 2NaClO3 --> 2NaCl + 3O2

Dimas [21]

I’m not an expert and I haven’t taken chemistry in like a year but i believe you use stoichiometry to do this equation. It should look something like this.

8 0

2 years ago

What is the concentration of a solution formed by mixing 89.94 grams of cobalt (II)

bezimeni [28]

Answer:

0.47 M

Explanation:

The concentration of the solution can be calculated using the following equation:

$C = \frac{\eta}{V} = \frac{m}{M*V}$

<u>Where:</u>

V: is the volume of the solution = 68.6x10⁻² L

η: is the moles of cobalt (II) sulfate

m: is the mass of cobalt (II) sulfate = 89.94 g

M: is the molar mass of cobalt (II) sulfate = 281.103 g/mol

The concentration of cobalt (II) sulfate is:

$C = \frac{m}{M*V} = \frac{89.94 g}{281.103 g/mol*68.6 \cdot 10^{-2} L} = 0.47 mol/L$

We used the molar mass of the cobalt (II) sulfate heptahydrate (281.103 g/mol) since it is one of the most common salts of cobalt.

Therefore, the concentration of a solution of cobalt (II) sulfate is 0.47 M (assuming that the cobalt (II) sulfate is heptahydrate).

I hope it helps you!

3 0

3 years ago

Read 2 more answers

What is the gram formula mass of Ca3(PO4)2

scoundrel [369]

Answer:

it should be 310.18 g/mol :)

3 0

3 years ago

The mass of an atom is determined by the number of protons the element has. The more protons, the heavier the element.

alekssr [168]

Answer:

a i think true.

Explanation:

3 0

3 years ago