Answer:
<em>Mg = 24.30 g/mol) Mg(s) + 2HCl(aq) MgCl2(aq) + H2(g) Hint: 1 mole of gas at STP occupies 22.4 L</em>
PV=nRT
(1.1)(6.1)=(n)(0.08201)(298)
6.71=n(0.08201*298)
n=0.2745613769 moles Helium
n(Mm)=mass
0.2745613769(4.00)
1.098245508 grams of Helium
Answer:
The theoretical yield of carbon dioxide formed from the reaction of methane and oxygen gas is 1 mol.
Explanation:
The equation below shows the reaction of combustion of methane:
CH₄(g) + 2O₂(g) → CO₂(g) + 2H₂O(g)
When no reactants are wasted and the reaction is complete, 1 mol of gaseous CO₂ will be produced. This means that the theoretical yield of carbon dioxide is 1 mol.
That means the rock has a downward force due to gravity of
(9.8)(36,000)
= 352,800 N downwards on a free body diagram. If the rock is balanced,
that means the normal force up is equal to 352,800 N. And due to
Newton's about equal and opposite reactions, if the pedestal is pushing
up on the rock with 352,800 N of force, then the rock is exerting
352,800 N of force onto the pedestal.
Answer is D.
Among the given options, the products of equation A, B and C are aqueous solutions. Those are indicated by using (aq).
The balanced equation for the reaction between Li₂CO₃(aq) and FeCl₂(aq) is Li₂CO₃(aq) + FeCl₂(aq) → 2LiCl(aq) + FeCO₃(s)
LiCl is a salt while FeCO₃ is a Grey/green color precipitate. Hence, option D represents a precipitation reaction.
