Victor Silva
New member
how would I solve these two problems?
What is the barometric pressure exerted in pascals of a column of decane (density = 0.7300 g/cm3) 680.5 mm in height? Hint: 1 Pa = 1 kg/(m*s2); the gravitational constant = 9.80665 m/s2
and
A sample contained a mixture of HgS and CdS. The amount of HgS was determined by reacting 7.904 g of the sample with an excess of HCl to release H2S from each compound;
HgS(s) + 2 HCl(aq) ----> HgCl2 + H2S(g)
CdS(s) + 2 HCl(aq) ----> CdCl2 + H2S(g)
If the sample reacted completely and produced 1347 mL of hydrogen sulfide at 28.36 °C and 689.4 mm Hg, what was the mass percentage of HgS in the mixture?
What is the barometric pressure exerted in pascals of a column of decane (density = 0.7300 g/cm3) 680.5 mm in height? Hint: 1 Pa = 1 kg/(m*s2); the gravitational constant = 9.80665 m/s2
and
A sample contained a mixture of HgS and CdS. The amount of HgS was determined by reacting 7.904 g of the sample with an excess of HCl to release H2S from each compound;
HgS(s) + 2 HCl(aq) ----> HgCl2 + H2S(g)
CdS(s) + 2 HCl(aq) ----> CdCl2 + H2S(g)
If the sample reacted completely and produced 1347 mL of hydrogen sulfide at 28.36 °C and 689.4 mm Hg, what was the mass percentage of HgS in the mixture?