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AleksandrR [38]
4 years ago
10

Which statement describes both homogeneous mixtures and heterogeneous mixtures?

Chemistry
2 answers:
Lubov Fominskaja [6]4 years ago
6 0

Answer:

I would say B.

Explanation:

Karolina [17]4 years ago
3 0

Answer:

C

Explanation:

Mixtures can be separated physically, while compounds cannot.

For example if we have mixture of water and alcohol ethanol, we can separate water and ethanol with distillation (process of heating and cooling). Ethanol and water have different boiling points (physical property).

But if we want to separate water (compound) into oxygen and hydrogen, we must break bonds between oxygen and hydrogen and that is not physical property.

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Can someone solve #14 and #18?
Rudiy27

Answer:

14. the metal is tin which it density is equal 7.3g/cm^3

7 0
3 years ago
New substances formed during a chemical reaction are indicated -
Darya [45]

Answer:

on the right side of the equation and are called products

Explanation:

Reactants are on the left side of the equation. When reactants react, they give products.

Products formed are at the right side of the equation.

They are directed as reactant to product using an arrow pointing towards the products.

New substances formed are called products. Several By-Products can also be formed . They are also on the right hand side.

7 0
4 years ago
Which subatomic particles are located in the nucleus of a ca-40 atom?
san4es73 [151]

Answer:

3) neutrons and protons

Explanation:

I just completed Grade 11 Chemistry with a 97% and I'm still under the impression that all atoms have only neutrons and protons in their nuclui.

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3 0
3 years ago
Which statement best describes the function of enzymes?
sveta [45]

D.

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4 0
3 years ago
Read 2 more answers
How much energy is required to bring a 30 gram crayon from room temperature, 25 degrees C, to its melting point 49 degrees C?
USPshnik [31]

Answer:

1540.8 Joules of energy is required to bring a 30 gram crayon from room temperature, 25 degrees C, to its melting point 49 degrees C

Explanation:

Crayon is paraffin wax. The specific heat of paraffin wax is 2.14 J/g°C

As we know

Q = m*c *\Delta T

Where

\Delta T is the change in temperature T_2- T_1

m is the mass of the object

c is the specific heat in J/g°C

Substituting the given values, we get -  

Q = 30 * 2.14 *(49-25)\\Q = 1540.8    Joules

1540.8 Joules of energy is required to bring a 30 gram crayon from room temperature, 25 degrees C, to its melting point 49 degrees C

7 0
3 years ago
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