Multiple-Choice Homework Problem 1.6 The sun is mostly hydrogen atomic mass 1.00

Question

Multiple-Choice Homework Problem 1.6 The sun is mostly hydrogen atomic mass 1.00794g/mole). The mass of the sun is 2 x 1050kg. Approximately how many protons are in the sun? Don't forget to convert kilograms to grams. Select One of the Following: (a) 3 x 10 protons (b) 1 x 21. protons (c) 2 x 10 protons (d) 1 x 1057 protons e) 3 x 100 protons Multiple-Choice Homework Problem 1.7 In electrostatic experiments, a constant concern is loss of charge to the environment or the accidental grounding of an object. In general, it is much harder to keep something charged than to get rid of the charge. What aspect of the Law of Conservation of Charge does this showcase? Select One of the Following: (a) Charge is continually destroyed; it must, however, be recreated in some other part of the universe (b) Conservation of charge applies only to the fundamental charged particles like the electrons not to larger charged objects like rods or boards (c) Charge is not destroyed, it is transferred from one body to another (d) The effects of charge wear off over time to the point where they can no longer be observed (e) The Law of Conservation of Charge is only an approximation of natural processes.

Explanation / Answer

1.6
mass of sun = 2 x 10^30 kg = 2x 10^33 grams
no of moles in sun of hydrogen = (2x 10^33 ) / 1.00794 = 2 x 10^33 moles

now as 1 atom of hydrogen has 1 proton so 1 mole of hydrogen will have 1 mole of protons as well , so protons in sun = 2 x 10^33 protons

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1.7
c charge is not destroyed, it is transferred from one body to another

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