Match the assumption with the correct unit of concentration. 1- Molarity
2- Molality
3- mass %
4- mole fraction
5- parts per a million(ppm)
A. 1 kg of solution
B. 1 g of solute
C. 100 g of solute
D. 1 mole solute
E. 1L of solute
F. 100 g of solution
G. 1 mole of solvent
H. 1L of solvent
I. 1 mole of solution
J. 1 kg of solvent
K. 1 g of solution
L. 1L of solution
M. 1 kg of solute

In a laboratory determination of the atomic weight of tin, a sample of tin is weighed in a crucible. nitric acid is added, and the reaction proceeds to give a hydrated tin(iv)oxide plus no2and h2o. the hydrated tin(iv)oxide is then heated strongly and reacts as follows: sno2.xh2o(s)sno2(s)+ xh2o(g)the sno2is finally cooled and weighed in the crucible. explain the effect on the calculated atomic weight of tin that would result from each of the following experimental errors: (a)considerable spattering occurs when the nitric acid is added to the tin.(b)the hydrated tin(iv)oxide is not heated sufficiently to change it completely to tin oxide.