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Worksheets3.1 RAM & RFM
Total questions: 10
Worksheet time: 24mins
What is the relative formula mass of ammonium nitrate, NH4NO3 ?
[Relative atomic mass: N, 14; H, 1; O, 16]
76
79
80
90
What is the relative formula mass of hydrated magnesium sulphate, MgSO4.7H2O?
[Relative atomic mass : H = 1, O = 16, Mg = 24 , S = 32]
145
150
239
246
The mass of three atoms of element Y is equal to the mass of four carbon atoms. Y is not actual symbol of the element.
What is the relative atomic mass of element Y?
[ Relative atomic mass : C = 12 ]
12
16
36
48
The relative atomic mass of an element is the number
of times
The mass of an atom is greater than the mass of one
carbon-12 atom
The mass of an atom is greater than the mass of one
oxygen atom
The mass of an atom is greater than 1 /12 of the
mass of one carbon-12 atom
The mass of an molecule is greater than 1/12 of the
mass of one carbon-12 atom
The relative formula mass hydrated X carbonate. X2CO3.10H2O is 286. What is the relative atomic mass of element X?
[Relative atomic mass: H=1, C=12, O=16]
23
46
120
240
How many times are 2 copper atoms heavier than an oxygen atom?
[Relative atomic mass: O=16, Cu=64]
4
8
16
64
The mass of three atoms of element X is equal to the mass of four carbon atoms. X is not the actual symbol of the element.
What is the relative atomic mass of element X? [Relative atomic mass of C=12]
48
36
16
12
The average mass of a magnesium is 24 times greater than of the mass of 1/12 of a carbon 12 atom.
What is the relative atomic mass of magnesium?
2
12
24
48
Why carbon-12 was chosen as a reference standard for relative atomic mass and relative molecular mass?
Carbon has three isotopes
Carbon is non-metal element
Carbon is a solid and easier to be handle
Carbon is located in Group 14 in the Periodic Table of Elements
Element J and element Q have proton number of 12 and 9 respectively. What is the relative formula mass of a compound formed between J and Q?
[Relative atomic mass: J = 24; Q = 19]
30
43
62
67
