The reaction for combustion of hydrogen gas in the oxygen is as follows:
Here, oxygen is present in excess thus, hydrogen will be limiting reactant.
2 moles of hydrogen gives 2 moles of water vapor, thus, 1 mole will give 1 mole of water vapor.
The mass of hydrogen is 1.80 g and molar mass of 
is 2 g/mol converting mass into number of moles:
Thus, 0.9 mol of gives 0.9 mol of 
. Molar mass of is 18 g/mol, converting number of moles to mass,
m=n×M=0.9 mol× 18 g/mol=16.2 g
Therefore, mass of water vapor produced will be 16.2 g.
the sun has a radius of 432,169 miles
The statement which is true about the three sub atomic particles is
X is a neutron,Y is a protons and z is an electron
<u><em>Explanation</em></u>
- Atom has three sub atomic particles,that is neutrons,protons and electrons.
- Neutrons have no electric charge,protons are positively charged while electrons are negatively charged.
- Both neutrons and proton are located in the nucleus while electrons are located outside the nucleus.
- since electrons are located outside the nucleus they orbit around the nucleus.
The answer is : 17.5 liters drained and replaced by 17.5 liters of 100% solution.
x = amount drained and replaced
(70-x) = remaining amount of 20% solution
<span>.20(70-x) + 1.00(x) = .40(70)
14 - .2x + 1x = 28
1x - .2x = 28 - 14
</span><span>.8x = 14
</span><span>x = 14/.8
x= 17,5 ( 17.5 liters drained and replaced by 17.5 liters of 100% solution)
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