Express 602 * 10 ^21 in standard scientific notation

An unknown gas effuses at 0.850 times the effusion rate of nitrogen dioxide, NO2. Estimate the the molar mass of the unknown gas

Which of the following are accurate descriptions of closed and open thermodynamic processes? open processes are 'flow through' processes in closed processes the working substance enters from the right and exits to the left open processes take place

Why does ocean water in the eye of a hurricane rise about two feet

explain with example how the physical state of reactants and products can be shown in chemical equation

1) Ba (CN) 2 + H2 (SO4) = H (CN) + Ba (SO4)

A balloon contains 1.00 mol helium gas at STP. What will the volume of the balloon be if the pressure increases to 2.00 atm?

If 100 mL of a gas were enclosed in a buret at 500 mm Hg, what volume would the gas occupy at 1000 mm Hg at the same temperature? P1V1=P2V2

Would Mn (HPO4) 2 be manganese (II) monohydrogen phosphate?

The fundamental frequency of a violin string is 440 hz. the frequency of its second harmonic is

How much of a 15.0M stock solution do you need to prepare 250ml of a 2.35ml hf solution?