If the density of an object is 5.2 g/cm3, and volume is 3.7 cm3, what is its mass? 1. 19g
2. 22g
3. 15g
4. 10g

pick the correct one out of the 4 choices

Of the groups of elements below, which are most likely to gain electrons to become anions? a. alkali metal b. boron group c. halogen d. transition metal

Which of the following signs of a chemical reaction are observed in the reaction of potassium with water? precipitate formed temperature change smell produced gas produced color change

If 3 moles of a compound use 24 j of energy in a reaction, what is the a hreaction in j/mol?