how many variables are you allowed to change a purpose in a experiment

What type of change does electron have?

Define density and erute the formula and units for calculating density

What makes noble gases stable

Calculate the volume of a sample of gas at 5.75 atm if it occupies 5.14 L at 2.49 atm

What is the vapor pressure above a solution prepared by dissolving 0.500 mol of a non-volatile solute in 275 g of hexane (86.18 g/mol) at 49.6°C? P°hexane = 400.0 torr at 49.6°C.

What elements react the most? Like have the most reactivity.

A neutral atom has an atomic number of 20 and a mass number of 42. How many electrons does the atom have?

A rock is placed into water and the volume of water increase 15ml. what is the density of the rock if it had a mass of 24.3 grams.

Suppose a student did not fully redissolve the Al (OH) 3 that initially formed upon the addition of H2SO4. Predict and explain how this would impact the apparent percent yield this student determines.

Essential amino acids are those that our bodies cannot synthesize. question 7 options: true false