Part A
If the partial pressures are oxygen 445 torr and helium 90 torr , what is the partial pressure (torr) of
the nitrogen in the mixture?

Read the chemical equation. 2c2h2 + 5o2 → 4co2 + 2h2o which of the following statements would be correct if one mole of c2h2 was used in this reaction? one mole of oxygen was used in this reaction. five moles of oxygen were used in this reaction. four moles of carbon dioxide were produced from this reaction. two moles of carbon dioxide were produced from this reaction.

What is the empirical formula of a compound that is 50.7% antimony and 49.3% selenium ?

Which of the following is a property of an acid solution? a. slippery to the touch b. ph less than 7 c. turns red litmus paper blue d. bitter taste