Answer:
the correct answer is H2SO4 and HSO4-41
At room temperature:
a. Gold is a solid, as in the gold jewelry that most people have.
b. Gasoline is a liquid, as it is pumped in cars to use as fuel.
c. Oxygen is a gas, as we breathe it in from the atmosphere.
d. Neon is a gas, it is one of the noble gases in the periodic table.
e. Olive oil is a liquid, as it is used in cooking.
f. Sulfur is a solid, and it can be found naturally in mining.
g. Mercury is a liquid which is often seen in thermometers.
Answer/explanation :
To calculate the number of mass, we use this formula
Number of mole = mass / molar mass
Since we are given the number of mole
Number of mole = 2.60mol
Mass = ?g
Molar mass of Li = 6.941g/mol
2.60mol = mass / 6.941 g/mol
Mass = 2.60 * 6.941
= 18.0466g
Therefore, the number of mass is 18.0466g
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<span>S(s)+O2(g)→SO2(g), ΔHâ = -296.8kJ
SO2(g)+12O2(g)→SO3(g) , ΔHâ = -98.9kJ
H2(g) + 1/2 O2 (g) --------> H2O(l)ΔHâf = -285.8kJ
SO3(g) + H2O(l) --------> H2SO4, ΔHâ = -227.8 kJ .
All above steps are involved in the formation of H2SO4, therefore delta Hf for H2SO4 is [ -296.8+ (-98.9)+ (-285.8) +(-227.8)] = - 909.3 kj/mol
The energy required to form 1 mol H2SO4 fom its elements is - 909.3 kj / mol</span>