An atom that has 13 protons and 15 neutrons is an isotope of the element

A solution contains 45 grams of nitrogen gas and 40 grams of argon. What is the mole fraction of argon in this solution?

What is the gram formula mass of Li2SO4

Describe the direction of the wind movement around the center of high air pressure

How is the energy present in the electrons passed through electron transport chain ii first used?

Phospholipids are made up of how many fatty acid chains

How many grams of methane gas (CH4) are in a 15.8-liter sample at 1.2 atmospheres and 27°C? Show all work used to solve this problem

Oxygen forms a number of compounds with sulfur, many of which are quite reactive. One such compound is 57.20 % by mass S. Calculate the number of grams of oxygen present in a sample of this compound that contains 50.00 grams of S.

What is meant by "pressure of the atmosphere?" What causes this pressure?

A substance is analyzed and found to contain 85.7% carbon and 14.3% hydrogen by weight. A gaseous sample of the substance is found to have a density of 1.87 g/L, and 1 mol of it occupies a volume of 22.4 L.

Which property of a mineral sample does not influence how quickly it settles in water? 1) density 2) hardness 3) shape 4) size