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olga_2 [115]
3 years ago
10

Calculate the amount of heat needed to convert 190.0 g of ice at -15 °C to water at 35 °C. Cp of ice=2.09J/g*c

Chemistry
1 answer:
salantis [7]3 years ago
6 0

Answer:

The amount of heat required to melt 25 grams of ice is 8,350 Joules or 2,000 calories.

Explanation:

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How do the amino acids lysine and alanine combine to form a dipeptide?
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A dipeptide is formed by the process of dehydration synthesis, which in this case allows two amino acids to come together and form a larger molecule plus water.
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Which of these factors will cause a solid solute to dissolve faster?
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I believe the answer you are looking for is the 4th one.
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Which of the following would happen if Earth's moon were half the size that it is now? O The oceans' tidal variations would be s
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Explanation:

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2 years ago
the half of an oxidation-reduction reaction shows the iron gains. what does this electron gain mean for iron.
Nataly [62]

The correct answer is option C, that is, it is reduced.

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In the given case, iron gains electrons mean that it is reduced.  


3 0
2 years ago
For the reaction PC15 (8) PC13 (g) + Cl2 (g) K = 0.0454 at 261 °C. If a vessel is filled with these gases such that the initial
Fiesta28 [93]

Answer:

The correct answer is B.

The K_{eq} is samller than Q of the reaction . So,the reaction will shift towards the left i.e. towards the reactant side.

Explanation:

Equilibrium constant is defined as the ratio of concentration of products to the concentration of reactants each raised to the power their stoichiometric ratios. It is expressed as K_{eq}

K is the constant of a certain reaction when it is in equilibrium, while Q is the quotient of activities of products and reactants at any stage other than equilibrium of a reaction.

For the given chemical reaction:

PCl_5(g)\rightleftharpoons PCl_3(g)+Cl_2(g)

The expression for Q is written as:

Q=\frac{[PCl_3][Cl_2]}{[[PCl_5]^1}

Q=\frac{0.20 M\times 2.5 M}{0.20 M}

Q=2.5

Given : K_{eq} = 0.0454

Thus as K_{eq}, the reaction will shift towards the left i.e. towards the reactant side.

4 0
3 years ago
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