Questions
1. On analysis, a compound was found to contain 11.64 g of sodium, 16.20 g of sulfur and 12.15 g of oxygen. Determine the empirical formula of the compound.
2. A liquid used in a rocket fuel is found to consist of 3.04 g of nitrogen and 6.94 g of oxygen. The molar mass of the compound is 92 g mol-1. Determine the molecular formula of the compound.
3. Calculate the percentage composition of hydrogen, sulfur and oxygen in sulphuric acid, H2SO4.
4. Determine the percentage, by mass, of carbon in aluminium carbonate, Al2(CO3)3.
Answers: 1
Chemistry, 22.06.2019 05:10
How many miles of water are produced if 5.43 mol pbo2 are consumed
Answers: 1
Chemistry, 23.06.2019 00:00
In an exothermic reaction, energy may be released to the surroundings in the form of question 4 options: heat light thermal all of the above
Answers: 3
Chemistry, 23.06.2019 03:30
In chemistry, the type of an atom (what element it is) is determined by: a) the number of protons it contains in its nucleus.b) the number of neutrons it contains in its nucleus.c) the number of protons it has in a cloud around the nucleus.d) the number of neutrons it has in a cloud around the nucleus.e) the number of electrons it exchanges with its neighbors.
Answers: 1
Chemistry, 23.06.2019 06:20
What is the magnitude of the force of gravity between to 1000 kg cars which are separated by distance of 25. 0 km on an interstate highway? the force between the two cars will be what
Answers: 3
Questions
1. On analysis, a compound was found to contain 11.64 g of sodium, 16.20 g of sulfur and...
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