The mass of one hydrogen atom is 1.67x10^-27 kg. A cylinder contains 3.01x10^23 hydrogen atoms. What is the mass of the hydrogen?

A marshmallow gets black when toasted too long in a campfire. chemical property or change

what kind of tax do people pay on things that they already own, such as a home, a car, or a boat? A. Income tax B. Property tax C. Sales tax D. Asset tax

What is the significance of the fact that the droplets carried different charges?

What type of elements make up most of the periodic table

Identify the solute with the lowest van't hoff factor.

Balance the following equation with the smallest whole number coefficients. Choose the answer that is the sum of the coefficients in the balanced equation. Do not forget coefficients of "one". RbOH + H3PO4 → Rb3PO4 + H2O

What is the temperature of 100 liter container having 1 mole of an ideal gas at a pressure of 20 kilopascals

5.2*10^26 molecules of ch4 in volume

Which of the following statements about igneous rocks is correct A. intrusive igneous rocks are formed when magma is called above the ground. B. Extrusive igneous rocks are formed when magma is cooled above the ground C.

The compound KOH is called