How much heat energy (in megajoules) is to convert 7 kilograms of ice at -9 degrees celcius to water at 0 degrees c

How many atoms of mg are present in 97.22 grams of mg? 6.022 × 1023 2.408 × 1024 4.818 × 1024 5.855 × 1025

Which is true concerning the products and reactants of photosynthesis and cellular respiration? a. the products of photosynthesis are sugars and the reactants of cellular respiration are starches. b. the products of photosynthesis are reactants in cellular respiration. c. oxygen is needed for photosynthesis and is given off in cellular respiration.

Calculate the temperature rise when 0.2g of propane is used to heat 400cm cubed of water.