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balu736 [363]
2 years ago
7

A student conducts an experiment by placing a wooden stick in a cup of sugar solution. Over the next few weeks, sugar crystals f

orm on the stick and increase in size. The student concludes that the resulting crystals must be alive because they grow.
Chemistry
1 answer:
Ipatiy [6.2K]2 years ago
8 0

Answer: In order to be alive there must be cells present and since sugar does not contain cells it is not alive.

Explanation:

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The sum of two integers is -4. Can the two integers both be positive?
kaheart [24]

Answer: No.

Explanation: A negative integer can only be made with 2 negative integers or 1 positive and 1 negative integer.

3 0
3 years ago
When a compound is dissolved in hot ethanol during a recrystallization, what is changing on a molecular level? The intermolecula
Feliz [49]

Answer:

The intermolecular forces between the solute and solvent.

Explanation:

When you are heating a solvent, the intermolecular forces are reduced because the distances between molecules are large. Thus, in a solution where solvent is hot the intermolecular forces between solute and solvent are lower than those solutions where solvent is in room temperature.

The covalent bonds do not change because this mean a chemical reaction that doesn't occur in a solution.

Usually solid solutes melts in a higher temperature than boiling point in solvents. Thus, a compound normally doesn't melt in a hot solvent.

I hope it helps!

3 0
3 years ago
PLEASE ANSWER!!!!<br><br><br> what is mass and volume????
azamat
Mass and volume are two units used to measure objects. Mass- the amount of matter an object contains and volume- how much space it takes up
6 0
3 years ago
Read 2 more answers
What volume will be occupied by 11.7 g of Helium in a balloon at an altitude of 10.0 km if the air pressure is 0.262 atm and the
matrenka [14]

Answer: 204 L

Explanation:

According to ideal gas equation:

PV=nRT

P = pressure of gas = 0.262 atm

V = Volume of gas = ?

n = number of moles = \frac{\text {given mass}}{\text {molar mass}}=\frac{11.7g}{4g/mol}=2.92

R = gas constant =0.0821Latm/Kmol

T =temperature =-50^0C=(273+(-50))K=223K

V=\frac{nRT}{P}

V=\frac{2.92\times 0.0820 L atm/K mol\times 223K}{0.262atm}=204L

Thus volume occupied by 11.7 g of Helium in a balloon is 204L

6 0
3 years ago
1. How many particles are present in 800 grams of copper (II) sulfide, CuS? The molar mass of CuS is 95.611 g/mol.
wel
1-5.037077324x10^23

Use these magic triangles they will help you a lot

8 0
3 years ago
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