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Please help me solve this paper FAST!!!!!!

1 answer:

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The answer would be A: The solution must result in a cure for skin cancer. And B: The solution must not cause harm to living organisms.

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write a balanced chemical equation for the reaction that occurs when calcium metal undergoes a combination reaction with O2(g).

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1) reactants: Ca + O2 (g)

2) Unbalanced equation: Ca + O2 (g) -> CaO

3) Balanced equation: 2Ca + O2 (g) -> 2CaO

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in per unit time some things velocity changes rate is called acceleration

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Which unstable element is used to determine the age of volcanic rock?

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Answer:

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A quantity of water vapor at 100°C is condensed to liquid water at the same temperature. In the process, 180,414.08 joules of

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Answer:

0.08kg

Explanation:

Given parameters:

Temperature of water = 100°C

Quantity of heat released = 180414.08J

Unknown:

Quantity of water condensed = ?

Solution:

This is simple phase change process without any attendant change in temperature.

To solve this problem, use the formula below;

H = mL

H is the heat released

m is mass

L is the latent heat of condensation of water = 2260 kJ/kg

Insert the parameters and solve;

180,414.08 = m x 22.6 x 10⁵ J/kg

m = $\frac{180414.08}{2260000}$ = 0.08kg

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