which of the following has the highest mass:(a) 1 gram atom of C (b) 1/2 moles of CH4 (c) 10 ml of water (d) 3.011×10^23 atoms of hydrogen
Answers
"1 gram atom of carbon have the highest mass and keep in mind that gram ion, gram molecule, gram atom equal to mole
Explanation:
It is expressed as a multiple of one-twelfth the mass of the carbon-12 atom, 1.992646547 × 10−23 gram, which is assigned an atomic mass of 12 units.
In this scale 1 atomic mass unit (amu) corresponds to 1.660539040 × 10−24 gram."
Answer:
1 gram atom of C has the maximum mass
Keep In Mind :
1 gram molecule (or) 1 gram atom equal to 1 mole
One mole is the amount of a substance that contains as many particles or entities as there are atoms in exactly 12 g (or 0.012 kg) of the 12C isotope.
1 mole = Number of particles / Avagadro constant
1 mole= Mass of that substance/Molar Mass of that substance
1 mole=Avagadro constant/Volume in ml
EXPLANATION :
(a) 1 gram atom of C= 1 mole of C=12 g
(b) 1/2 mole of CH4= 1/2{12+4(1)}=8g
(c)10 ml of water= 1 mole/10=18g/10=1.8g
(d)3.011×10^23 atoms of hydrogen= 1/2 mole of H=1/2(1)=0.5g
1 gram atom of C has the maximum mass