A chemist wants to make 5.5 L of a 0.250 M CaCl2 solution, find the mass

Identify the charge on the nucleus and on the electrons of an atom. How do i do this?

If a sample of neon (Ne) contains 1.01 x 10^22 atoms, what is it's mass? explain your answer

For the gas phase decomposition of 1-bromopropane, CH3CH2CH2BrCH3CH=CH2 + HBr the rate constant at 622 K is 6.43*10-4 / s and the rate constant at 666 K is 8.28*10-3 / s. The activation energy for the gas phase decomposition of 1-bromopropane is

Which energy changes takes place when gasoline evaporates from a fuel gas can

What type of chemist would study the energies and heats involved in chemical reactions?

How is a compound different from an element?

Suppose you're attempting to measure the density of the liquid that is highly volatile (it evaporates quickly).

22. How many atoms are there in 344.75 g of gold nugget? a. 1.05 x 10 to the power of 24 atoms b. 1.05 x 10 to the power of 23 atoms c. 6.02 x 10 to the power of 23 atoms d. 197 atoms Is B the answer

A light twig is barely floating on the surface of water. What will most likely happen to the twig if a drop of dishwashing detergent is added near it?

A gas occupies 4.00 L at 2.00 atm pressure. At what pressure would the volume be 6.00 L if the temperature remains constant?