4) Calculate the heat needed to melt 40.0 g of ice at 0°C?

What is the pH value of MgSO4?

What is the relationship between temperature and kinetic energy? A. When all molecular motion stops, the temperature stops changing. B. As molecules move more quickly, the temperature increases. C.

What is plate tectonics

Give an element it is used as fuel in nuclear reactors

Which of the following properties of a base makes it a good cleaner? A. Looks shiny B. Reacts with oils and grease C. Reacts with certain metals to produce hydrogen gas D. Has a floral smell

Base on its molecular mass, what is the molar mass of iron

For the following reaction in aqueous solution, identify all those species that will be spectator ions. Select all that apply. Na, SO4+Hg (NO3) 2HSO4+2NaNO3 Choose one or more: A. Hg2S04 B. Na2S04 C. Nat D. NO3 E. SO42- F. Hg2 (NO3) 2 G. NaNO3 H.

One mole of which hydrocarbon requires 8 mol o2 to achieve complete combustion to give carbon dioxide and water?

How many bromine atoms are present in 39.9 g of CH2Br2

Chemists use activity series to determine whether which type of reaction will occur?