What is the molar mass of a gas if 1.25 g of the gas has a volume of 255 L at STP?

Isotopes of an element have the same number of protons but a different number of d. neutrons.

Which types of orbitals are found in the principal energy level n = 2? s s, f s, d s, p s, p, d

How many moles of nacl are present in 600 ml of a 1.55 m nacl solutions

Which of the following molecules has a bent shape

If the ph of a solution is decreased from 9 to 8, it means that the select one: a. concentration of h + has increased tenfold (10x) compared to what it was at ph 9. b. concentration of h + has decreased to one-tenth (1/10) what it was at ph 9. c.

Two components combine to create a binary ionic compound. Name one of them

True or false. The synthesis of giant molecules from components of repeating units is polymerization.

Which term names an environmental cost of fossil fuel consumption? A. cheap energy B. increased greenhouse gases C. renewable resource D. low pollution

Slowly heating butter in a pan until it changes from a solid to a liquid is an example of a physical change. True False

Action - reaction forces don't cancel each other. A. True B. False