CH1010 Quiz: Background Quiz
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Friday sept 7 and monday sept 10/2018 centi: complete the following chart involving pre xes commonly encountered in the si system. 109 micro mega kilo nano pico giga c. Imagine a hectare to be a square which is 100 m on each side. 1 ha (1 mm)2 (10 3 m)2 = 2. 5 1010 mm2: a particular isotope of boron is 11b. Recall that one mole of a species contains 6. 022 1023 individual entities. Since there are two moles of no present. 2 for every one mole of ba(no2)2, then 0. 0050 mol of no . From question 6, the molar mass of ba(no2)2 is 229. 35 g/mol. [ba(no2)2] = 0. 0128 mol/0. 2500 l = 5. 13 10 2 mol/l or 5. 13 10 2 m: what is the concentration of no . 2 ions for every one ba(no2)2, so [no . 2 ] = 1. 03 10 1 m: consider the balanced equation: 2 nacl + pb(no3)2 pbcl2 + 2 nano3.
