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3 years ago

Balance the equation: H2O2 → H2O + O2

Chemistry

1 answer:

Elanso [62]3 years ago

6 0

Answer:

2H+0 =H2O

Explanation:

May this help you

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A laboratory analysis of a sample finds it is composed of 38.8% carbon, 16.2% hydrogen, and 45.1% nitrogen. What is its empirica

Sladkaya [172]

Answer: The empirical formula for the given compound is $CH_5N$

Explanation : Given,

Percentage of C = 38.8 %

Percentage of H = 16.2 %

Percentage of N = 45.1 %

Let the mass of compound be 100 g. So, percentages given are taken as mass.

Mass of C = 38.8 g

Mass of H = 16.2 g

Mass of N = 45.4 g

To formulate the empirical formula, we need to follow some steps:

Step 1: Converting the given masses into moles.

Moles of Carbon = $\frac{\text{Given mass of Carbon}}{\text{Molar mass of Carbon}}=\frac{38.8g}{12g/mole}=3.23moles$

Moles of Hydrogen = $\frac{\text{Given mass of Hydrogen}}{\text{Molar mass of Hydrogen}}=\frac{16.2g}{1g/mole}=16.2moles$

Moles of Nitrogen = $\frac{\text{Given mass of nitrogen}}{\text{Molar mass of nitrogen}}=\frac{45.4g}{14g/mole}=3.24moles$

Step 2: Calculating the mole ratio of the given elements.

For the mole ratio, we divide each value of the moles by the smallest number of moles calculated which is 3.23 moles.

For Carbon = $\frac{3.23}{3.23}=1$

For Hydrogen = $\frac{16.2}{3.23}=5.01\approx 5$

For Oxygen = $\frac{3.24}{3.23}=1.00\approx 1$

Step 3: Taking the mole ratio as their subscripts.

The ratio of C : H : N = 1 : 5 : 1

Hence, the empirical formula for the given compound is $C_1H_5N_1=CH_5N$

3 0

3 years ago

Molecules that contain nothing but hydrogen and carbon are

romanna [79]

Hydrocarbons. They usually burn. In fact, I can't think of one that does not.

4 0

3 years ago

Will made a cup of hot tea and placed it on the tableA few minutes later, he picked up the cup and touched the warm table where

aliina [53]

D. Because convection is the transfer of heat and because the heat from the cup was transferred on to the table it has to be d :)

6 0

3 years ago

What is the volume of a cubic salt crystal measuring 2.44 × 10-2 m by 1.4 × 10-3 m by 8.4 × 10-3 m?

Artemon [7]

V = ( 2.44 x 10⁻² ) x ( 1.4 x 10⁻³ ) x ( 8.4 x 10⁻³ )

V = 2.9 x 10⁻⁷ m³

hope this helps!

7 0

3 years ago

Read 2 more answers

Which steps are important when designing and conducting a scientific experiment?

Leya [2.2K]

Explanation:

When designing and conducting a scientific experiment then it is necessary to sequentially follows all the steps necessary for the experiment.

Also, it is required to identify independent variables, if any. On the other hand, it is required to address any confounding variables, so that it becomes mentioned the type or number of variables present.

Thus, we can conclude that when designing and conducting a scientific experiment:

Identify the independent variable.

Address any confounding variables.

4 0

3 years ago