Answer:
Correct answer - wheels
Explanation:
<u>Limiting reactant:</u>
The reactant that is used up first in the chemical reaction.i.e. the reactant that restricts the amount of product that can be produced.The unused product left in the reaction.
For example,
The ratio of creating is
If you had 8 moles of hydrogen and only 3 moles of oxygen ;you would have enough oxygen to produce 6 moles of water with 2 moles of hydrogen leftover.
From the given,
200 handle bars, 150 wheels, 250 pedals, and 75 seats.
For tricycle making, each one required one seat, handle,two pedals and three wheels.
Hence, wheels are first consumed.
Therefore, wheels are limiting reactant.
Answer:
D) Mg(s)
Explanation:
We are given:
The substance having highest positive potential will always get reduced and will undergo reduction reaction. Here, chlorine will undergo reduction reaction will get reduced. Magnesium will undergo oxidation reaction and will get oxidized.
<u>Reducing agents are the species which reduces others and oxidizes itself. Thus, Magnesium will be the strongest reducing agent.</u>
Answer:
pH = 2.
Explanation:
A weak acid is in equilibrium with its ions in a solution, so it must have an equilibrium constant (Ka). And, pKa = -logKa
Ka = 10⁻⁴
So, for CH₃COOH the equilibrium must be:
CH₃COOH(aq) ⇄ H⁺(aq) + CH₃COO⁻(aq)
1 M 0 0 Initial
-x +x +x Reacted
1-x x x Equilibrium
And the equilibrium constant:
Supposing x << 1:
10⁻⁴ = x²
x = √10⁻⁴
x = 10⁻² M, so the supposing is correct.
So,
pH = -log[H⁺]
pH = -log10⁻²
pH = 2