Witch equations are correctly balanced.

H 2 O + 2O 2 H 2 O 2

Fe 2 O 3 + 3H 2 2Fe + 3H 2 O

Al + 3Br 2 AlBr 3

CaCO 3 CaO + CO 2

A sample of helium gas occupies a 10 cubic meter container at stp (273 k, 1 atm). what will the approximate volume become when the pressure is 1.5 atm and the temperature is 32 oc? a. 5.4 cubic meters b. 7.5 cubic meters c. 9.2 cubic meters d. 11.

What is the nuclear equation for the alpha decay of 173 Yb?

What is the best explanation of why the iron found in the inner core of the Earth remains in the solid state even though the temperature in the inner core is roughly 5700 °C?

Name the following compounds: carbon (IV) fluorine

8. A volume of 7.5 L of hydrogen gas at STP was produced from the single-replacement reaction of zinc with nitric acid. Calculate the mass of zinc needed for this reaction.

Measurement of the functions of a nephron reveals a glomerular capillary pressure of 69 mm Hg, and a pressure in the capsular space of 15 mm Hg.

Water is unique because the density of it's solid is less than the density of it's liquid. Describe how life would be different if this weren't true

If an element has 1 valence electrons, how many dots will be in the elements dot diagram?

What is the temperature of a gas at STP?

What is the numerical meaning of centimeter