E polyatomic carbonate ion (CO32−) is present in both the products and the reactants of the chemical equation shown below.

Na2CO3 + SrCl2 → SrCO3 + 2NaCl

Which statement best describes the mass of carbonate (CO32−) in the products and the reactants of the equation?
A.
The mass in the products is equal to the mass in the reactants.
B.
The mass in the products is two times as great as the mass in the reactants.
C.
The mass in the reactants is less than the mass in the products.
D.
The mass in the reactants is two times as great as the mass in the products.

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.

Melissa is interested in her family tree and how her family has changed over its many generations. melissa probably more closely resembles

If anyone would be able to me out with these three questions it would be these are from the chem 2202 course.