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natulia [17]
3 years ago
8

How many calories are required to raise the temperature of 75g of water from 20 ˚C to 50˚ C?

Chemistry
1 answer:
mojhsa [17]3 years ago
7 0
The answer to the question is letter b
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What term is used for the chemical composition of a compound​
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Relative molecular mass or RMM is the answer.

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If two electrons are removed from beryllium during a reaction, which energy level becomes the valence shell?
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Explanation:

After the electron configuration, the last shell of the beryllium atom has two electrons. In this case, both the valence and valence electrons of beryllium are 2. We know the details about this. The elements that have 1, 2, or 3 electrons in the last shell donate the electrons in the last shell during bond formation.

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Container A holds 717 mL of ideal gas at 2.50 bar . Container B holds 179 mL of ideal gas at 4.30 bar . If the gases are allowed
Nesterboy [21]

Answer:

Pressure gas A

using boyles law

p1}V_{1} = P_{2}V2

V2 = 717ml + 179 ml

     = 896ml

∴ P_{2} = 2.50 × 717ml/896ml

       = 2.0 bar

Pressure B

P2 = 4.30 bar× 179ml/896ml

     = 0.859bar

ptotal = P_{A}+P_{B}

          = 2.0 bar + 0.859 bar

           = 2.859 bar

           

Explanation: Using Daltons law of partial pressure,the pressure is independently of each other when the gas is exerted.where we can use daltons law to find the pressure of each gas separately when it expands into the total volume in two containers.

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Delicious77 [7]

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Explanation:

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How did Dmitri Mendeleev arrange the periodic law?
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