Which fraction of an original 20.00-gram sample of nitrogen-16 remains unchanged after 35.65 seconds?

Radiant heat transfers energy

Is 70 degree hot or cold

Calcium oxide reacts with water in a combination reaction to produce calcium hydroxide: CaO (s) + H2O (l) → Ca (OH) 2 (s) A 5.00-g sample of CaO is reacted with 4.83 g of H2O.

Rank the following in order of decreasing acid strength in aqueous solution: HCl, HOCl, HOBr, HOI. A) HCl > HClO > HBrO > HIO B) HIO > HBrO > HClO > HCl C) HCl > HIO > HBrO > HClO D) HClO > HCl > HBrO > HIO E) HClO > HBrO > HCl > HIO

What is the maximum number of moles of water you could produce with 30 moles of O2?

What do igneous rocks form from? (20pts!)

A gas at STP has a volume of 1.0 liter. If the pressure is doubled and the temperature remains constant, the new volume of the gas will be ... ?

Combustion analysis of toluene, a common organic solvent, gives 8.20 mg of co2 and 1.92 mg of h2o. if the compound contains only carbon and hydrogen, what is its empirical formula?

Why does the moon have phases? What are the four main phases of the moon? How long does it take to change from one to another?

How many atoms are in 1/2 mole of calcium