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vivado [14]
3 years ago
8

For elements to have similar physical and chemical properties, what must be true about them?

Chemistry
1 answer:
Dominik [7]3 years ago
6 0
They are probably in the same group.
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What is biological difference ​
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Answer:

Sex refers to biological differences between males and females. For example, chromosomes (female XX, male XY), reproductive organs (ovaries, testes), hormones (oestrogen, testosterone). Gender refers to the cultural differences expected (by society / culture) of men and women according to their sex.

Explanation:

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2 days Claire went missing, the body of a young girl was found in an abandoned building. There were 2 blowfly larvae on the body
KengaRu [80]

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What number is international system of units based on
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3 0
3 years ago
If the volume of a solution is 25.6 L and its molarity is 8.20 M, how many moles of solute are
harkovskaia [24]

Answer:

210 moles

Explanation:

From the question given above, the following data were obtained:

Volume of solution = 25.6 L

Molarity = 8.20 M

Mole of solute =?

Molarity is simply defined as the mole of solute per unit litre of water. Mathematically, it can be expressed as:

Molarity = mole /Volume

With the above formula, the mole of solute dissolved can be obtained as follow:

Volume of solution = 25.6 L

Molarity = 8.20 M

Mole of solute =?

Molarity = mole /Volume

8.20 = mole / 25.6

Cross multiply

Mole = 8.20 × 25.6

Mole = 209.92 ≈ 210 moles

Thus, the mole of solute dissolved in the solution is 210 moles

7 0
2 years ago
Why does hydrogen fluoride have a high boiling point
mezya [45]

The intermolecular bonding for HF is van der Waals, whereas for HCL, the intermolecular bonding is hydrogen. Since the van der Waals bond is stronger than hydrogen, HF will have a higher boiling temperature. Since the covalent bond is stronger than van der Waals, HF will have a higher boiling temperature.

3 0
2 years ago
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