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vlada-n [284]
3 years ago
11

So it will help you see what is 5 times 9 it is 40.

Chemistry
1 answer:
dolphi86 [110]3 years ago
7 0

Answer:

40

Explanation:

5+5+5+5+5+5+5+5+5=40

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Which of the following is not a property of water?
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Answer:

A) hydrogen bonds cause a high surface tension = FALSE

Explanation:

The rest are correct

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The measure of the attraction that an atom has for electrons involved in chemical bonds is known as: ? electron affinity / radio
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The answer is the last option. Electronegativity is the measure of the attraction that an atom has for electrons involved in chemical bonds.  It relates to covalent bonds where electrons are shared. The Pauling scale is the most used.
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Please, I need at least accurate answers for my Sound Knowledge Check for my Science class.
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1.A

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Determine whether you can swim in 1.00 x 10^27 molecules of water.​
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Answer:

We can not swim in 1.00 × 10²⁷ molecules of water

Explanation:

The given number of molecules of water = 1.00 × 10²⁷ molecules

The Avogadro's number, N_A, gives the number of molecules in one mole of a substance

N_A ≈ 6.0221409 × 10²³ molecules/mol

Therefore

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The number of moles of water present in 1.00 × 10²⁷ molecules, n = (The number of molecules of water) ÷ N_A

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The mass, 'm', of water in 1,660.53902857 moles of water is given as follows;

Mass = (The number of moles of the substance) × (The molar mass of the substance)

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7 0
2 years ago
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In an exothermic reaction the energy of the product is less than the energy of the reactants.

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