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(a) Write 'true' or 'false' for each statement. (d) A mole of NaCl(s) contains 2 moles of ions
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(a) Write 'true' or 'false' for each statement. (d) A mole of NaCl(s) contains 2 moles of ions
What is the mass, in kilograms, of an Avogadro's number of people, if the average mass of a person is 160 lb? How does this compare with the mass of Earth, 5.98⨉1024 kg?
Without doing any detailed calculations (but using a periodic table to give atomic weights), rank the following samples in order of increasing numbers of atoms: 0.50 mol H2O, 23 g Na, 6.0⨉1023 N2 molecules.
(a) What is the mass, in grams, of one mole of 12C?
What is the mass, in kilograms, of an Avogadro's number of people, if the average mass of a person is 160 lb?
(a) Write “true” or “false” for each statement. (c) The mass of 1 ammonia molecule is 17.0 g.