A 0.600 g sample of a compound of arsenic and oxygen was found to
contain 0.454 g of arsenic. What is the empirical formula of the
compound? *

A. AsO2
B. As2O
C. As2O3
D. AsO

The empirical formula of the compound is As₂O₃

The correct answer to the question is Option C. As₂O₃

From the question given above, the following data were obtained:

The empirical formula of the compound can be obtained as follow:

As = 0.454 g

O = 0.146 g

Divide by their molar mass

As = 0.454 / 75 = 0.006

O = 0.146 / 16 = 0.009

Divide by the smallest

As = 0.006 / 0.006 = 1

O = 0.009 / 0.006 = 1.5

Multiply by 2 to express in whole number.

As = 1 × 2 = 2

O = 1.5 × 2 = 3

Thus, the empirical formula of the compound is As₂O₃

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The answer is C. As2O3

Explanation:

0.600 gr of Arsenic and Oxygen.

0.454 gr of Arsenic

So, 0.146 gr of Oxygen will be in the compound.

- First: The grams of each element must be divided by its atomic weight:

- Both results must be divided by the lowest number found:

- As one of the values is not an integer then both results are multiplied until both give an integer:

- Then the answer is given:

b.

the accuracy of the data.

answer : one can design an experiment using a liquid and an additive that can be added to the liquid and observe the chemical changes in the reaction species.

one would need a beaker which is filled with a known amount of the liquid in which thermometer is placed to measure the temperature changes; after addition of the additive to the liquid solution one can note down the temperature change and find whether the reaction is endothermic or exothermic in nature. by subtracting the initial temperature value with the final temperature one can find the temperature changes.

various combinations of liquid and additive can be used. liquid in this case can be a known quantity of water and additives can be epsom salt or without epsom salt the experiment can be conducted to notice the changes. water and ice, hydrogen peroxide and dry yeast, vinegar and baking soda,etc.