Chemistry, 09.01.2020 10:31, cyberdac01
Asample of gold (au) has a mass of 72.04 g.
a) calculate the number of moles of gold (au) in the sample. show your work and highlight your final answer.
calculation:
b) a sample of gold (au) has a mass of 72.04g. calculate the number of atoms of gold (au) in the sample. (use your answer from part a.) show your work and highlight your final answer.
calculation:
question 2 a sample of sodium chloride (nacl) has a mass of 16.55 g.
a) calculate the number of moles of nacl in the sample. show your work and highlight your final answer.
calculation
b) a sample of nacl (sodium chloride) has a mass of 16.55g. calculate the number of moles of na (sodium). calculate the number of moles of cl (chlorine). (hint; you can use your answer from part a as your starting point.) show your work and highlight your final answer.
calculation
c) a sample of nacl (sodium chloride) has a mass of 16.55g. calculate the number of atoms of na (sodium). calculate the number of atoms of cl (chlorine). (hint; you can use your answer from part b as your starting point.) show your work and highlight your final answer.
calculation:
question 3 a sample of table sugar (sucrose, c12h22o11) has a mass of 5.432 g.
a) calculate the number of moles of c12h22o11 in the sample. show your work and highlight your final answer.
calculation
b) a sample of table sugar (sucrose, c12h22o11) has a mass of 5.432 g. calculate the number of moles carbon. calculate the number of moles hydrogen. calculate the number of moles oxygen. (hint: you can use your answer from part a as your starting point.) show your work and highlight your final answer.
calculation
c) a sample of table sugar (sucrose, c12h22o11) has a mass of 5.432 g. calculate the number of atoms carbon. calculate the number of atoms hydrogen. calculate the number of atoms oxygen. (hint: you can use your answer from part b as your starting point.) show your work and highlight your final answer.
calculation
Answers: 1
Chemistry, 22.06.2019 16:50, brandiwingard
What is conserved in the reaction shown below? h2(g) + cl2 (g) --> 2hcl(g)a. mass onlyb. mass and moles onlyc. mass, moles, and molecules onlyd. mass, moles, molecules, and volume
Answers: 2
Chemistry, 22.06.2019 18:00, jeepjose58
What amount of heat is exchanged when 106.2 grams of substance y goes from a liquid at 35 degrees celsius to a solid at the same temperature? melting point of substance y = 35 degrees c; δhvaporization = 3.67 j/mol; δhfusion = 3.30 j/mol. mwsubstance y = 28.22 g/mol. −12.4 j −3.51 x 102 j 1.24 x 101 j 351 j
Answers: 1
Chemistry, 22.06.2019 20:00, denaemarie02
Nitrogen dioxide decomposes according to the reaction 2 no2(g) ⇌ 2 no(g) + o2(g) where kp = 4.48 × 10−13 at a certain temperature. if 0.70 atm of no2 is added to a container and allowed to come to equilibrium, what are the equilibrium partial pressures of no(g) and o2(g)
Answers: 2
Asample of gold (au) has a mass of 72.04 g.
a) calculate the number of moles of gold (a...
a) calculate the number of moles of gold (a...
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