How do you balance

C2H2 + O2 - > CO2 + H2O?

Is it C2H2 + 5/2 O2 - > 2CO2 + H2O

or 2C2H2 + 5O2 - > 4CO2 + 2H2O?

From the solubility curve, which of these salts is most soluble at 0°C? a.) NaCl b.) KBr c.) NaNO3 d.) KNO3

How do you find the volume occupied by 454 grams of copper if the density equals 8.92 g/mL?

Find the percent of water in magnesium sulfate x hexahydrate.

Which of these is not a gas? hydrogen, oxygen, gravity, or helium

What mass of li3po4 is needed to prepare 500 ml of a solution having a lithium ion concentration of 0.175 m?

Is freezing water a physical or chemical change

When would a cell use Active Transport? Mark all that apply. a. When the cell needs to move a compound down its concentration gradient. b. When the cell needs to move a compound against its concentration gradient. c.

Examples of gravitational potential energy.

What is a safety rule while using glass beakers

if a solution is saturated, how does the rate of dissolution of a solute compare with it's rate of crystallization?