Calcium carbonate, CaCO3, decomposes upon heating according to the following equation. CaCO3 (s) ∆ CaO (s) + CO2 (g)

0.20 mol of CaCO3 is heated in a 2.0 L vessel. After heating, it is found that the pressure of

the gas is 44.08 kPa at 30°C.

i) Determine the number of moles of gas formed from the decomposition of CaCO3 .

ii) The mass of CaCO3 left after the reaction was completed

iii) The partial pressure of hydrogen gas in the vessel when 0.10 mol of hydrogen gas is added

to the vessel at the same temperature.

Follow the steps provided in the simulation to add water to the graduated cylinder, select one of the three samples (copper, silver, or gold), set its mass to the values given in the statements below, and calculate its density. here is a summary of the steps required: add water by clicking and holding prepare a known volume of water button. until the desired volume of water has been added. if more than the desired volume is added, click the reset button. button and redo the procedure. a single click will add about 21.0 ml of water. to set the mass, click and hold weigh out metal button. until the desired amount of metal is added to the weighing pan. once the desired mass of the metal is added, release the button. transfer the metal to water and then click on calculate density button. to see how the density is calculated using water displacement to measure the volume of the solid. to save time you can approximate the initial volume of water to â±1 ml and the initial mass of the solid to â±1 g. for example, if you are asked to add 23 ml of water, add between 22 ml and 24 ml. which metals in each of the following sets will have equal density? check all that apply.

How do i complete this electrolysis of water lab? i’m at home, so i don’t have the materials, and the lab didn’t properly work and was incomplete at school.

Apump contains 0.5 l of air at 203 kpa.you draw back on the piston of the pump, expanding the volume until the pressure reads 50.8 kpa. what is the new volume of the air pump