A compound contains 28% nitrogen and 72% of a metal by weight. Three atoms of metal combine with two atoms of nitrogen. If the atomic weight of nitrogen is 14, the atomic weight of the metal is:
12
24
36
48
Related Questions
Which has more molecules: 1 mole of glucose or 18 grams of water?
1 mole of glucose
18 grams of water
Both have the same number of molecules.
Cannot be determined without more information.
2 mol of and 11.2 L at NTP react to form mol at sulphur, then is
1.5
3
11.2
6
The production of 10 moles of ammonia by the Haber process requires how many moles of hydrogen gas, assuming complete reaction?
5
10
15
20
If you have 18g of water and 18g of oxygen, which contains a greater number of molecules?
18g of water
18g of oxygen
They contain the same number of molecules
Cannot be determined
Upon heating, 15.0 g of impure zinc carbonate decomposes completely to produce zinc oxide and carbon dioxide. If 5.6 g of zinc oxide is formed, calculate the percentage purity of the zinc carbonate sample. (Atomic weight: )
57.6
65.4
72.8
81.4
A mixture of g formic acid and g oxalic acid is treated with conc. . The evolved gaseous mixture is passed through pellets. Calculate the mass (in g) of the remaining product at STP.
0.56
1.43
2.24
3.15
What is the mass of 0.2 moles of oxygen atoms?
1.6 g
3.2 g
6.4 g
16 g
Calculate the mass (in g) of the gaseous product remaining at STP when a mixture of g formic acid and g oxalic acid is treated with conc. and then passed through pellets.
5.6
11.2
16.8
22.4
If you have samples of 0.5 moles of water, 36 g of water, and 3.011 x 10²³ molecules of water, which sample has the greatest mass?
0.5 moles of water
36 g of water
3.011 x 10²³ molecules of water
All have the same mass
0.5 moles of water contains how many molecules?
6.022 x 10²³ molecules
1.204 x 10²⁴ molecules
3.011 x 10²³ molecules
1.505 x 10²³ molecules
