A sample containing 0.35 moles of argon gas at 13 ° C and 568 torr pressure is heated to 56 ° C and increased to 897 torr. Calculate the change in volume (L)? A) 5 B) -3 C) 4 D) 1 E) -

Drug abuse will not lead to physical and psychological dependence. true or false ?

For a research project, a student decided to test the effect of the lead(ii) ion (pb2+) on the ability of salmon eggs to hatch. this ion was obtainable from the water‐soluble salt, lead(ii) nitrate, which the student decided to make by the following reaction. pbo(s) + 2 hno3(aq) → pb(no3)2(aq) + h2o losses of product for various reasons were expected, and a yield of 86.0% was expected. in order to have 5.00 g of product at this yield, how many grams of pbo should be reacted? (assume that sufficient nitric acid, hno3, would be used.)

Identify the correct mole ratio for each substance. sodium chloride (nacl) na: cl = 1: ammonium nitrate (nhno) h: o = 4: