2. State whether the following statements are true or false.
1. Formula mass of Na2O Na20 is 62 amu.
Ans:
II. Those particles which have more or less electrons than the normal ato
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Ill. Formula for sulphur dioxide is SO3503.
Ans:
IV. Molar mass of ethyne (C2H2C2H2) is 26 g/mol.
Ans:
V. 22 gm of CO2C02 consists of 1 mole.
Ans:
Answers
the equation of the Earth is the 2.2 of the Earth is our nature will be not given up to the earth matlab
Explanation:
Ican you of the earth of 2.4 of the two measures will be not given to the Earth for simple skysky is the nature of the earth and water of the nature of the earth at also first of nature of Earth is sky sky and water valley 11 also we can not give his any name for that it is one only sky and sky and water is equal of the Earth it is important to us that's why soil water is our nature
Answer
1.True
2.true
3.True
4.True
5.trur
Explanation:
1.Sodium Na number 11 has 11 protons and 12 neutrons for a mass of 23 amu. Since there are two Sodiums the mass of Sodium in the molecules is 2 x 23 = 46 amu.
Oxygen Atomic number 8 has 8 protons and 8 neutrons, for a mass of 16 amu for the mass of Oxygen in the molecule is 16 amu since there is only one Oxygen atom in the molecule
Add the mass of the sodium ( 46 amu) with the mass of Oxygen (16 amu) to find the mass of the molecule
46 amu + 16 amu = 62 amu
4.HNO
3
=1×Mass of H atom+1×Mass of N atom+3×Mass of O atom
=1×1+1×14+3×16=63 g/mol
5.Molar mass of 1 mole of CO
2
= Molar mass of C +2 x Molar mass of O = 12 + 32 = 44.
⟹ 44 gm of CO
2
= 1 mole of CO
2
So, 22 gm of CO
2
=
44
22
moles of CO
2
= 0.5 moles of CO
2