Answer:
4.90 moles of
will produce (9.8) moles of
,
(4.90) moles of
and
(39.2) moles of 
Explanation:
From the question we are told that
The number of moles of is 
The formation reaction of
is
From the reaction we see that
1 mole of
is formed by 2 moles of
1 mole of
and 4 
This implies that
4.90 moles of
will produce (2 * 4.90) moles of
,
(1 * 4.90) moles of
and
(8 * 4.90) moles of 
So
4.90 moles of
will produce (9.8) moles of
,
(4.90) moles of
and
(39.2) moles of 
Metalloids are metallic-looking brittle solids<span> that are either semiconductors or exist in semiconducting forms, and have amphoteric or weakly acidic oxides. Typical </span>nonmetals<span> have a </span>dull<span>, coloured or colourless </span>appearance<span>; are </span>brittle<span> when </span>solid<span>; are poor conductors of heat and electricity; and have acidic oxides.</span>
The anwser is A thank you
Answer is: rate of production of hydrogen is 0,01758 kg/s.
Chemical reaction: CH₄ + H₂O → CO + 3H₂.
V(CH₄) = 159 L.
p = 0,86 atm · 101,325 kPa/atm = 87,14 kPa.
T = 294°C = 567 K.
R = 8,314 J/K·mol.
Ideal gas law: p·V = n·R·T.
n(CH₄) = p·V ÷ R·T.
n(CH₄) = 87,14 kPa · 159 L ÷ 8,314 J/K·mol · 567 K.
n(CH₄) = 2,93 mol.
From chemical reaction: n(CH₄) : n(H₂) = 1 : 3.
n(H₂) = 2,93 mol · 3 = 8,79 mol.
m(H₂) = 8,79 mol · 2 g/mol.
m(H₂) = 17,58 g · 0,001 kg/g = 0,01758 kg.