Answer:
B. Kinetic energy
Explanation:
moving is kinetic, potential is inside a body
Mass of Oxygen: 0.0159 grams
Moles of Oxygen: 9.94x10^-4
To find the mass of oxygen, subtract the mass of copper from the total mass.
There are 0.0159 grams of Oxygen.
To find how many moles there are, divide the given amount of oxygen by the molar mass (atomic mass) of oxygen because that mass is the same as one mole of oxygen.
Molar mass of Oxygen: 16.00
There are 9.94*10^-4 moles of Oxygen.
Answer:
- At the negative electrode: Mg(s) => Mg2+ + 2e-
- At the positive electrode:Cl- + 2e- => Cl2(g)
Explanation:
1. Magnesium is formed at the negative electrode.
2. Chlorine gas is released at the positive electrode.
Answer: 0.450 M H2SO4
Explanation:
To solve this problem, we must remember how to compute molarity. To find the molarity of a solution, we divide the number of moles by the number of liters of solution. Using this formula and substituting the given values, we get:
Molarity = moles solute/liters solution
= 1.35 moles/3.00 L
= 0.450 M H2SO4
Therefore, the correct answer is 0.450 M H2SO4. Note that the answer has 3 significant figures because each of the given values also contains 3 significant figures.
Hope this helps!
In stones:
1 kg ------------ 0.157473 stones
60 kg ---------- ??
60 x 0.157473 / 1 => 9.44838 stones
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in pounds:
1 kg ----------------- 2.20462 pounds
60 kg --------------- ??
60 x 2.20462 / 1 => 132.277 pounds
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hope this helps!
