What is the percent concentration of a 250 ml solution with 0.120 g nacl?

Round 100.1 C to 1 significant figure

Sodium chloride or table salt is a compound formed when sodium loses its valence electron to chlorine. Which type of bond formation takes place in sodium chloride? A. Covalent bond B. Ionic bond C. Metallic bond

The decay of which radioisotope can be used to estimate the age of the fossilized remains of an insect? (1) Rn-222 (3) Co-60 (2) I-131 (4) C-14

Some fossil bones contain 1/8 of their original amount of carbon-14. how many half-lives have passed? how old are the bones?

What are the missing coefficents for the following equation? __N2+__H2->__NH3 3,1,2 1,3,2 1,1,2 1,3,3

Does oxygen release thermal energy

Is adding chocolate syrup to milk a chemical or physical change?

Describe what happens to a reaction that has stopped if more of the limiting reactant is added. What will happen if more of the excess reactant is added?

What is the mass of 5.40*1021 platinum atoms?

A 2.00 L sample of gas at 35 C is to be heated at constant pressure until it reaches a volume of 5.25 L. To what Kelvin temperature must this sample be heated?