A compound X contains 82.76% of carbon by mass and 17.24 of hydrogen by mass. The empirical formula of compound X is:

Compound X has and empirical formula of C₂H₅ and a molecular mass of 58. The molecular formula of X is:

Which two of the following contain the same number of molecules?

4.8g of calcium is added to 3.6g of Water. The following reaction occurs.

Ca + 2H₂O → Ca(OH)_{2 +} H₂

What Reagent is in excess?

In the same reaction where 4.8g of calcium is added to 3.6g of Water.

Ca + 2H₂O → Ca(OH)_{2 +} H₂

What is the mass of the excess reagent that remained at the end of the experiment

Ethanol is manufactured from Glucose C₆H₁₂O₆ by fermentation

C₆H₁₂O₆ → 2C₂H₅OH + 2CO₂

In an experiment, 30.0g of glucose was fermented.

What is the number of moles of glucose in 30.0g

C₆H₁₂O₆ → 2C₂H₅OH + 2CO₂

Using the equation, Calculate the maximum mass of ethanol that could be obtained from 30.0g of glucose.

C₆H₁₂O₆ → 2C₂H₅OH + 2CO₂

Using the equation, Calculate the volume of carbon dioxide at r.t.p that can be obtained from 30.0g of glucose

Water is formed when 48g of Oxygen combine with 6g of hydrogen.

What mass of Oxygen combines with 2g of Hydrogen?