A balloon has 750 mL of air in it at 1 atm pressure. How many liters does the balloon have if the pressure is changed to.75 atm and the temperature stays the same?​

The covalent compound acetylene, which is the fuel of the oxyacetylene torch used by welders, has the molecular formula c2h2. the covalent compound benzene, a commercial solvent, has the molecular formula c6h6 each of these covalent compounds contains carbon and hydrogen atoms in a one-to-one ratio. would it be correct to write the chemical formulas of each as ch? explain.

The climate of the continental united states is generally 1. tropical 2. temperate 3. arctic 4. highland

Calculate - analysis of compound composed of iron and oxygen yields 174.86 of fe and 75.14g of o. what is the empirical formula for this compound?