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3 years ago

How does a sugar solution become rock candy?

Chemistry

1 answer:

Hatshy [7]3 years ago

4 0

Answer:

Explanation:

A supersaturated solution is unstable—it contains more solute (in this case, sugar) than can stay in solution—so as the temperature decreases, the sugar comes out of the solution, forming crystals. The lower the temperature, the more molecules join the sugar crystals, and that is how rock candy is created.

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Carla is working as a forensic investigator who specializes in specific time of death analysis. She is called into the lab to he

gregori [183]

Answer:

3 p.m most probably.

Explanation:

They found it at Monday 5 pm so its done before that time so its 3 p.m

8 0

3 years ago

A certain substance makes up 4.8 × 10–4 percent by mass of a normal healthy human being. How many grams of that substance would

iris [78.8K]

Answer:

0.2615 g

Explanation:

Given that mass of the body = 120 lb

The conversion of lb to g is shown below as:-

1 lb = 454 g

So, 120 lb = 120*454 g = 54480 g

The substance is $4.8\times 10^{-4}\ \%$ of the human body

So, Mass of that substance in the body of mass 54480 g is:-

$m=\frac{4.8\times 10^{-4}}{100}\times 54480\ g=0.2615\ g$

<u>0.2615 g of that substance would be found in the body of a person weighing 120 lb.</u>

4 0

3 years ago

H2 + Br2 → 2HBr If 2.23 g of hydrogen (H2) reacts completely, how many grams of hydrogen bromide (HBr) is formed? (mw Br=79.9) Q

NemiM [27]

Answer:

The correct option is;

B) 179 g

Explanation:

The parameters given are;

Mass of H₂ that takes part in the reaction = 2.23 g

Molar mass of hydrogen gas, H₂ = 2.016 g

Number of moles, n, of hydrogen gas H₂ is given by the relation;

$n = \dfrac{Mass \ of \ hydrogen \ gas, \, H_2 }{Molar \ mass \ of \, H_2 } = \dfrac{2.23}{2.016} = 1.106 \ moles$

Chemical equation for the reaction;

H₂ + Br₂ → 2HBr

Given that one mole of H₂ reacts with one mole of Br₂ to produce two moles of HBr

1.106 mole of H₂ will react with 1.106 mole of Br₂ to produce 2 × 1.106 which is 2.212 moles of HBr

The molar mass, of HBr = 80.91 g/mol

The mass of HBr produced = Molar mass of HBr × Number of moles of HBr

The mass of HBr produced = 80.91 × 2.212 = 178.997 g ≈ 179 grams

Therefore, the correct option is B) 179 g.

3 0

4 years ago

What are the characteristics of binding energy

FrozenT [24]

Binding energy, amount of energy required to separate a particle from a system of particles or to disperse all the particles of the system.

5 0

2 years ago

Read 2 more answers

At a fixed pressure, if the temperature is doubled, the volume of a gas will be

Scrat [10]

Answer:

Doubled.

Explanation:

The relationship between the temperature and the volume of a gas at a constant pressure can be described using Charles' law:

V₁*T₂ = V₂*T₁

That means that the temperature and the volume of a gas are directly proportional: The higher the temperature, the higher the pressure. If one of those factors is increased twofold, the other one will be increased twofold as well.

7 0

3 years ago