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RoseWind [281]
3 years ago
15

Help meh fast PLZ PLZ

Chemistry
1 answer:
MAVERICK [17]3 years ago
7 0

Answer:

           

Explanation:

       

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Which statement best describes the specific heat capacity of a substance?
Neporo4naja [7]
I think is letter C, good luck!
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A fungus like the one that causes athletes foot causes disease by? A producing allergies B spreading spores c absorbing nutrient
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Suppose you find a rock originally made of potassium-40, half of which decays into argon-40 every 1.25 billion years. You open t
FromTheMoon [43]

We see that in 1 rock, there are 31 atoms of Argon and 1 atom of Potassium so the relative concentration of Potassium is:

1 / 32

or can be written as:

1 / 2^5

So this means that 5 half-lives have passed.

So the years are:

<span>years passed = 5 * 1.25 billion years = 6.25 billion years</span>

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3 years ago
What is the correct way to write 0.0000250 m in scientific notation?
DerKrebs [107]

Answer: The first one: 2.50 x 10^-5

Explanation:

6 0
4 years ago
Given that Kp [NOTE: Kp!!!!] = 1.39 at 400 ºC for the reaction, P4(g) &lt;=&gt; 2 P2(g), which answer best describes the reactio
Igoryamba

Answer:

The reaction will proceed to the left to attain equilibrium.

Explanation:

The question is missing but I guess it must be about <em>how the reaction will proceed to attain equilibrium.</em>

First, we have to calculate the partial pressures using the ideal gas equation.

pP_{4}=\frac{2.50mol\times (0.08206atm.L/mol.K)\times 673K}{25.0L} =5.52atm

pP_{2}=\frac{1.50mol\times (0.08206atm.L/mol.K)\times 673K}{25.0L}=3.31atm

Now, we have to calculate the reaction quotient (Qp).

Qp=\frac{pP_{2}^{2}}{pP_{4}} =\frac{3.31^{2} }{5.52} =1.98

Since Qp > Kp, the reaction will proceed to the left to attain equilibrium.

3 0
3 years ago
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