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Test yourself PSPM III

Total questions: 4

Worksheet time: 18mins

Name
Class
Date
1.

FIGURE shows first few lines in the Balmer series of hydrogen emission spectrum. Calculate the energy of a photon that produces line C.

(a)  

2.

Nitrogen monoxide, NO, reacts with oxygen gas to yield nitrogen dioxide, NO2.

In an experiment, 0.886 mol of nitrogen monoxide was mixed with 0.503 mol of oxygen to react and the volume of product was then recorded.

Calculate the percent yield of the experiment if only 12.0 L of NO2 was obtained at the end of the reaction.

(Ar N = 14.0, O = 16.0)

(a)  

3.

A solution is prepared by dissolving 36.0 g of calcium chloride, CaCl2 in 64.0 g of water. The solution formed has a density of 1.18 g mL-1.

What is the concentration of the CaCl2 solution in mol L-1.

(Ar H = 1.00, O= 16.0, Cl = 35.5, Ca = 40.0)

(a)  

4.

An organic compound contains only carbon, hydrogen and oxygen with a mass composition of 41.40% C, 3.47% H and 55.13% O.

(a)