Answer:
Hydrogen-1
Explanation:
Not sure what kind of explanation is needed for your question, because it doesnt specify.
The easiest should be:
Average mass of an element is calculated as the sum of the multiplication of each isotope by its percentage
And the mass of the hydrogen is 1, therefore the more abundant is hydrogen-1
Answer: -2.13%
Explanation:
I will assume that the correct time is 94 seconds, since it is stated as a fact. The measured time of 92 seconds is -2 seonds from the actual. That gives a percent error of:
[(Measured-Actual)/Actual] or (-2/94) or -2.13%
Answer:
D. Evaporating, condensing, collecting
Explanation:
The mixture is first heated so that the liquid needed to be collected can be evaporated into gas. Then, the gas is condensed back to liquid in a condenser. (usually the condenser is supplied with cold running water so speed up the condensation). Then, the liquid is collected after being condensed, in an apparatus such as a conical flask or a water bath.
