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gayaneshka [121]
3 years ago
8

What is the change in the freezing point of water when 35.5 g of sucrose is dissolved in 55.0 g of water?

Chemistry
2 answers:
sukhopar [10]3 years ago
7 0

Answer:

the answer is D. 0.326*C

Explanation:

Ainat [17]3 years ago
5 0
The answer is D but I gotta make this answer 20 characters real quick so ignore what I'm saying ja ja ja the cat go wow the I guess on this and I answer it a but the dog go wolf wolf moo
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Calculate the volume of a tin block that has a mass of 95.04 grams at STP. Your response must include both a numerical setup and
Ahat [919]

Answer:

Explanation:

As the problem states that we have STP, these conditions are 1 atm of pressure and 273 K of temperature.

Now, the equation we must use to solve this:

PV = nRT

Solving for V:

<em>V = nRT/P</em>

<em>Where:</em>

<em>V: Volume in Liters</em>

<em>n: moles of the tin block</em>

<em>T: temperature in K</em>

<em>P: Pressure in atm</em>

<em>R: gas constant which is 0.082 L atm / K mol</em>

But also the problem is giving us the density data for all elements. In the case of Tin it is 7.31 g/cm³ or 7.31 g/mL, so, with the formula of density:

<em>d = m/V  ----> V = m/d</em>

From the above formula, we can calculate the volume of tin so:

V = 95.04 / 7.31

<em>V = 13 mL</em>

This would be the volume of the tin block, but, we have this block at STP so we need to calculate the volume with the ideal gas equation above. We need the molecular mass of Tin which is 118.71 g/mol, so let's calculate the moles:

n = m/MM

n = 95.04 / 118.71 = 0.8 moles

Now, solving for V:

V = 0.8 * 0.082 * 273 / 1

<em>V = 17.91 L</em>

<em>And this would be the volume of the tin block at STP conditions.</em>

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2 years ago
States of matter are the...
atroni [7]
I believe your answer would be B.
4 0
2 years ago
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lesya [120]

Answer:

The instructions in a gene that tell the cell how to make a specific protein. A, C, G, and T are the "letters" of the DNA code; they stand for the chemicals adenine (A), cytosine (C), guanine (G), and thymine (T), respectively, that make up the nucleotide bases of DNA.

hope it helps !

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3 years ago
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How many independent variables can you have in an experiment for it to be valid?
Lemur [1.5K]

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There are often not more than one or two independent variables tested in an experiment.

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How many molecules of O2 will be required to produce 28.8 g of water?
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