A chemist is investigating an unknown gas. She observes that it combines with oxygen. It takes two liters of oxygen to fully react with one liter of the unknown gas, and that the resulting volume of gas is also two liters. What does she conclude?
A.) The unknown gas is diatomic.
B.) Oxygen is diatomic.
C.) The unknown material is beryllium.
D.) The unknown material is sodium
I think its's A or B please help!
To determine the correct answer, let's analyze the given information. The chemist observes that it takes two liters of oxygen to fully react with one liter of the unknown gas and that the resulting volume of gas is also two liters.
From this observation, we can conclude that the reaction between the unknown gas and oxygen results in a 1:2 ratio. This means that one molecule of the unknown gas combines with two molecules of oxygen to produce two molecules of gas.
Now let's evaluate the options.
A.) The unknown gas is diatomic.
If the unknown gas is diatomic, it means that the gas molecule consists of two atoms. In this case, if one molecule of the unknown gas combines with two molecules of oxygen, the resulting gas would have four atoms, not two. Therefore, option A is not the correct answer.
B.) Oxygen is diatomic.
Oxygen is indeed a diatomic gas, meaning it consists of two oxygen atoms bonded together. This knowledge aligns with the observation that it takes two liters of oxygen to react with one liter of the unknown gas. However, this conclusion only relates to oxygen being diatomic, not the unknown gas. So option B is not the correct answer either.
C.) The unknown material is beryllium.
The question does not provide any evidence or information to suggest that the unknown material is beryllium. Therefore, option C is not the correct answer.
D.) The unknown material is sodium.
Similar to option C, the question does not provide any evidence or information to suggest that the unknown material is sodium. Therefore, option D is not the correct answer.
Considering the analysis, the correct answer is none of the given options.
To determine the correct answer, let's analyze the given information step-by-step:
Step 1: According to the observation, it takes two liters of oxygen to fully react with one liter of the unknown gas.
Step 2: The resulting volume of gas after the reaction is also two liters.
Based on these observations, we can conclude that the unknown gas is diatomic, meaning it consists of two atoms.
Therefore, the correct answer is A.) The unknown gas is diatomic.