mixture with baking soda is heated and has a mass loss of 0.325 g. Refer to Example Exercise 14.2 and calculate the percentage of NaHCO3 in the mixture. 1 mol H2 CO3 62.03 g H2 CO3 2 mol NaHCO3 1 mol H2 CO3 84.01 g NaHCO3 1 mol NaHCO3 [?B1] g H2CO3 x = [?B2] g NaHCO3 %D Percentage of NaHCO3 in the mixture = [?B3] %

Some molecular compounds, such as hcl, ionize completely in solution. for molecular compounds such as h2co3, most molecules do not ionize in solution. which describes the properties of these two solutes? a. hcl and h2co3 have the same effect on the properties of the solution. b. hcl raises the freezing point of water more than h2co3 does. c. hcl raises the boiling point of water more than h2co3 does.

What is the volume of 3.2 moles of chlorine gas (cl2) at 295 k and 1.1 atm?

The zinc within a copper-plated penny dissolves in hydrochloric acid if the copper coating is filed down in several spots (so that the hydrochloric acid can reach the zinc). the reaction between the acid and the zinc 2h+(aq)+zn(s)→h2(g)+zn2+(aq) . when the zinc in a certain penny dissolves, the total volume of gas collected over water at 25 °c is 0.947 l at a total pressure of 743 mmhg . (vapor pressure of water is 23.78 mmhg at 25 °c .) what mass of hydrogen gas is collected? answer in appropriate significant figures