How many grams of hydrogen gas would be needed to form 8.0 grams of water

Afusion reaction takes place between carbon and another element. neutrons are released, and a different element is formed. the different element is a) lighter than helium.b)heavier than helium.c)the same weight as helium.d)dependent on the element that reacted with carbon.

The temperature of a lead fishing weight rises from 26 °c to 38 °c as it absorbs 11.3 j of heat. what is the mass of the fishing weight in grams?

Asolubility table shows that almost all compounds of group 1 metals are soluble in water. this general rule tells you that mgi2 is soluble rbno3 is soluble cacl2 is soluble co2 is soluble