How much heat is required to raise the temperature of 225g of lead from 25⁰c to 60⁰c?

How many moles of potassium hydroxide are needed to completely react with 2.94 moles of aluminum sulfate

The graph shows one consequence of urban sprawl. how did urban sprawl contribute to the change in biodiversity

If you used the method of initial rates to obtain the order for no2, predict what reaction rates you would measure in the beginning of the reaction for initial concentrations of 0.200 m, 0.100 m, & 0.050 m no2.