Mole word problems
the recommended daily allowance of selenium in your diet is 6.97x10-7 mole. how many atoms of selenium is this?
a bracelet containing 0.200 mol metal is 75% gold. how many atoms of gold are in the bracelet?
which has more atoms, 10.0 g c or 10.0 g of ca? how many atoms does each contain?
a mixture contains 0.250 mol fe and 1.20 g c. what is the total number of atoms in the mixture?
air contains several gases. argon makes up 0.934% of the air. if a person takes a breath that contains 0.600 g of air, calculate the number of argon atoms inhaled.
a chemist needs 0.015 mol of iodine crystals, i2, for an experiment. what mass of iodine crystals should the student obtain?
bonus problem
one atom of an unknown element has a mass of 6.66x10-23 g. what is the identity of this element?
Answers: 1
Chemistry, 21.06.2019 21:30
Which statements are true about electrolysis? check all that apply. electrolysis requires an acid be present. electrolysis is described by two half-reactions. electrolysis is not an industrial process. electrolysis results in commercially valuable products. electrolysis involves the transfer of electrons. reduction results in the loss of electrons. oxidation results in the loss of electrons.
Answers: 1
Chemistry, 22.06.2019 01:30
Aroller coaster car is traveling down a track at 22 m/s. the car has a mass of 2000 kg. what is the kinetic energy of the car? a) 22,000 j b) 968,000 j c) 484,000 j d) 44,000 j
Answers: 2
Chemistry, 22.06.2019 15:40
Use the periodic table to complete this equation that represents nuclear fission processesun - ba c 3 n
Answers: 2
Chemistry, 22.06.2019 19:40
What is the wavelength of a 3*10^12 hz infrared wave a 3*10^20m b 1* 10^4m c 3*10^-3m d 1*10^-4 m
Answers: 1
Mole word problems
the recommended daily allowance of selenium in your diet is 6.97x10-7 mole....
the recommended daily allowance of selenium in your diet is 6.97x10-7 mole....
Social Studies, 27.12.2019 05:31
Mathematics, 27.12.2019 05:31
Spanish, 27.12.2019 05:31
Mathematics, 27.12.2019 05:31
Mathematics, 27.12.2019 05:31
Geography, 27.12.2019 05:31
Chemistry, 27.12.2019 05:31
Mathematics, 27.12.2019 05:31
Mathematics, 27.12.2019 05:31
Mathematics, 27.12.2019 05:31
Arts, 27.12.2019 05:31
English, 27.12.2019 05:31