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masha68 [24]
3 years ago
12

WILL MARK BRAINLIEST IF YOUR ANSWER IS CORRECT

Chemistry
2 answers:
olga2289 [7]3 years ago
6 0

Answer:

1. <u>Element</u>

2. <u>Compound</u>

3. <u>Heterogeneous</u><u> </u><u>mixture</u>

4. <u>Homogeneous</u><u> </u><u>mixture</u>

5. <u>Homogeneous</u><u> </u><u>mixture</u>

6. <u>Heterogeneous</u><u> </u><u>and</u><u> </u><u>homogeneous</u><u> </u><u>mixture</u>

7. <u>Homogeneous</u><u> </u><u>mixture</u>

8. <u>Heterogeneous</u><u> </u><u>mixture</u>

Anettt [7]3 years ago
3 0
1. Gold is element
4. D
2 b
3c
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Which statements accurately describe volume? Check all that apply. Volume is a physical property of an object. Volume is measure
Alex17521 [72]

Answer:

- Volume is a physical property of an object.

- One unit of volume is the milliliter.

- Liquids and solids have constant volumes.

Explanation:

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Standard notation for 31,254,000
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That seems to be standard notation
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What is the molarity of an intravenous glucose solution prepared from 108 g of glucose in 2.0 L of solution? 0.018 mol/L 0.30 mo
scZoUnD [109]

Answer:

0.30 mol/L

Explanation:

Mass = 108 g

Molar mass of glucose = 180.156 g/mol

The formula for the calculation of moles is shown below:

moles = \frac{Mass\ taken}{Molar\ mass}

Thus,

Moles= \frac{108\ g}{180.156\ g/mol}

Moles= 0.5995\ mol

Given Volume = 2 L

Molarity=\frac{Moles\ of\ solute}{Volume\ of\ the\ solution}

Molarity=\frac{0.5995}{2}

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7 0
3 years ago
Which of the following explains the formation of the curved surface of water in the graduated cylinder shown below?
lara [203]

Answer: option D, Attractive forces form between polar water molecules and polar glass molecules in the cylinder.


Explanation:


1) The curved surface of water in the cylinder shown in the figure is named concave meniscus.


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These are the adhesive force and the cohesiive force.


3) The adhesive force is the of attraction between molecules of different substances, while the cohesive force is the attraction between molecules of the same substance.


4) Water has a strong cohesive force property in virtue of the hydrogen bonds (the particles of water tends to remain together due to the high intensity of the hydrogen bonds). This is why water form drops.


But also, there is a strong cohesive force between the polar water molecules and the polar glass molecules in the cylinder.


The concave meniscus is the result of the fact that the adhesive force between the surface of the glass cylinder and the molecules of water overcomes the cohesive force of the water molecules.

6 0
3 years ago
Several atmospheric gases contribute to global warming: carbon dioxide, methane, and nitrous oxide. Considering this, which choi
tia_tia [17]

Answer:

A

help u and it's A

Explanation:

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