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3 years ago

Describe the chemical reaction based on the

Chemistry

1 answer:

BabaBlast [244]3 years ago

3 0

Answer:

Ammonia gas reacts with oxygen gas.

Nitric oxide gas and liquid water are produced.

Platinum is used as a catalyst.

The equation is unbalanced because the number of hydrogen atoms is not the same on both sides of the equation.

Explanation:

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2 years ago

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2 years ago

A chemist prepares a solution of iron(III) bromide by measuring out of iron(III) bromide into a volumetric flask and filling the

ANTONII [103]

The question is incomplete, here is the complete question:

A chemist prepares a solution of iron (III) bromide $(FeBr_3)$ by measuring out 2.78 g of iron (III) bromide into a 50. mL volumetric flask and filling the flask to the mark with water.

Calculate the concentration in mmol/L of the chemists iron (III) bromide solution. Be sure your answer has the correct number of significant digits.

Answer: The concentration of iron(III) bromide solution is 0.19 M

Explanation:

To calculate the molarity of solution, we use the equation:

$\text{Molarity of the solution}=\frac{\text{Mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Volume of solution (in mL)}}$

We are given:

Given mass of iron(III) bromide = 2.78 g

Molar mass of iron(III) bromide = 298.6 g/mol

Volume of solution = 50. mL

Putting values in above equation, we get:

$\text{Molarity of solution}=\frac{2.78\times 1000}{298.6\times 50}\\\\\text{Molarity of solution}=0.19M$

Hence, the concentration of iron(III) bromide solution is 0.19 M

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3 years ago