How many moles of CO2 contains 16g of Oxygen?<...
How many moles of CO2 contains 16g of Oxygen?
0.5 mole
0.2 mole
0.4 mole
0.25 mole
Correct answer is A
One mole of CO2 has mass of 44 g and 32 g of O2. So 16 g of O2 have 22 g of CO2 or 0.5 moles of it.
What is the atomic number of Rhenium? ...
The name of the compound above is...
Which of the following alloys contain iron? ...
What is the concentration of a solution containing 2g of NaOH in 100cm3 of solution? [Na = 23, ...
How many faradays of electricity are required to liberate 9g aluminium? (AI = 27) ...
If 50 cm3 of a saturated solution of KNO3 at 40 °C contained 5.05 g of the salt, i...
The reaction Mg + H2O → MgO + H2 takes place only in the presence of?...
Which halogen is a gas at room temperature and is pale yellow in color? ...