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Andrew [12]
3 years ago
8

Balance the following reaction. A coefficient of "1" is understood. Choose option "blank" for the correct answer if the coeffici

ent is "1". KNO3 → KNO2 + O2
Chemistry
2 answers:
Roman55 [17]3 years ago
5 0
2KNO3 -> 2KNO2 + O2. Hope this helps!
zalisa [80]3 years ago
5 0

Answer: 2KNO_3\rightarrow 2KNO_2+O_2

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

The balanced equation will be:

2KNO_3\rightarrow 2KNO_2+O_2

The atoms on reactant and product side must be same.

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D. Dense, conducts electricity, high melting point, giant structure, brittle

Explanation:

Graphite is an allotrope of carbon. It is similar to diamond except for some differences in their properties and mode of formation.

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3 years ago
Molecular compounds are capable of forming multiple covalent bonds. the compound below that contains a triple bond is:
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The answer is <u>CO(g).</u>

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1 year ago
Please guys help me my quiz is timed and i dont have a lot of time left PLEASSE HELP ME!
tatyana61 [14]

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I think these are it

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5 0
2 years ago
Read 2 more answers
What is the molarity of solution that is 5.50 percentage by mass oxalic acid and has a density of 1.024 g/ml
Y_Kistochka [10]

Answer:

0.6257 M is the molarity of solution that is 5.50 percentage by mass oxalic acid.

Explanation:

Mass percentage of oxalic acid = 5.50%

This means that in 100 grams of solution there are 5.50 grams of oxalic acid.

Mass of solution , m = 100

Volume of the solution = V

Density of the solution = d = 1.024 g/mL

V=\frac{m}{d}=\frac{100 g}{1.024 g/mL}=97.66mL

V = 97.66 mL = 0.09766 L

(1 mL = 0.001 L)

Moles of oxalic acid = \frac{5.50 g}{90 g/mol}=0.06111 mol

Molarity=\frac{\text{Moles of solute}}{\text{Volume of solution in L}}

The molarity of the solution :

=\frac{0.06111 mol}{0.09766  L}=0.6257M

0.6257 M is the molarity of solution that is 5.50 percentage by mass oxalic acid.

6 0
3 years ago
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