7.1.84 g of magnesium is bumed in a bomb calorimeter. The temperature of the calorimeter rose from 21.30 oc to 28.56 oc. The heat capacity of the calorimeter is 6.27 kJ/OC. How many joules of heat were produced by the reaction?

If the concentration of phosphate in the cytosol is 2.0 mm and the concentration of phosphate in the surrounding fluid is 0.1 mm, how could the cell increase the concentration of phosphate in the cytosol? a) passive transportb) diffusionc) active transportd) osmosise) facilitated diffusion

At element makes up all organic compounds?

Before it was launched, a helium-filled balloon had a pressure of 201 kpa at a temperature of 27°c. at an altitude of 15,000 m, the pressure had decreased to 2.5 kpa and the temperature had dropped to -14 °c. the volume of the balloon increased to 59.3 m3. what is the original volume of the balloon? 13 m3 0.85 m3 0.077 m3 1.17 m3