Lets assume that 100 grams of the compound are present.
Carbon mass: 88.14 g
Hydrogen mass: 11.86 g
Moles carbon: 88.14/12 = 7.34
Moles hydrogen: 11.86/1 = 11.86
The moles of carbon are 7.34 and the moles of hydrogen are 11.86.
Not sure about the first one.
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Recycling aluminum cans.
Answer:
<h2>2000 N</h2>
Explanation:
The work done by an object can be found by using the formula
workdone = force × distance
From the question we have
workdone = 500 × 4
We have the final answer as
<h3>2000 N</h3>
Hope this helps you
Explanation:
(a) As per the mole concept, one mole of any atom contains
atoms or molecules, that is, Avogadro's number of atoms.
Therefore, 1 mole of
=
molecules
=
molecules
1 mole of
=
molecules
=
molecules
1 mole of
=
molecules
=
molecules
Hence, there are equal number of molecules present in the given atoms.
(b) Mass of each given atom will be calculated as follows.
Mass = no. of moles × molar mass
As one molecule of
contains 2 atoms of hydrogen.
So, mass of 1 mole of
= 
= 2.016 g
mass of 1 mole of
= 
= 31.996 g
mass of 1 mole of
= 
= 37.996 g
Thus, we can conclude that
has the greatest mass.
Ca=40g
P=31g
Ca3=120g
P2=62g
Ca3P2=182g
Ca3/Ca3p2=120/182=0.6593=approximately 65.93%