The heat of fusion of water is 799 calg the heat of

Question

A radioactive isotope has a half life of 80.4 minutes. How long will it take for the radiation from a 325 pCi sample to decrease to 21 pCi?

For the following reaction, write the chemical symbol for AgNO3 + Mg --> Mg(NO3)2 + Ag

1) the substance being reduced

2) the substance being oxidized

3) the oxidizing agent

4) the reducing agent

How many grams of CaCO₃ will be produced if we produce 12.13 grams of NaCl in the reaction CaCl₂   +    Na₂CO₃    --->   2 NaCl   +   CaCO₃

If we react 176 molecules of O₂ with magnesium according to the equation Mg + O₂ -> 2 MgO how many molecules of magnesium oxide will we form?

The heat of fusion of water is 79.9 cal/g, the heat of vaporization of water is 540 cal/g, and the specific heat of water is 1.00 cal/deg/g. How many grams of ice at 0 ° could be converted to steam at 100 °C by 8,195 cal of heat?