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snow_lady [41]
3 years ago
12

Please helppp !!

Chemistry
1 answer:
Alex787 [66]3 years ago
7 0
D ................................
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______ molecules have no net electrical charge
Reptile [31]

Answer:

A nonpolar molecule has no separation of charge

Explanation:

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3 years ago
Select all the signs of a CHEMICAL change from the list below. (You may need to select more than one for full points)
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The answers are B, C, and D.

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Explain the difference between mechanical weathering and chemical weathering​
Alchen [17]

Answer:

mechanical weathering breaks rocks into smaller forms without any change in their composition whereas chemical weathering breaks down rocks by forming new minerals .

or simply mechanical weathering is the physical breakdown of rocks while chemical weathering is the breakdown of rocks through chemical reactions .

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3 years ago
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Soluble ionic compounds that dissociate naerly completely when dissolved are classified as _______.
Anettt [7]

The answer is D. Strong electrolytes

Strong electrolyte is a solute or solution that completely or almost  completely dissociates when in solution. These are good conductors of electricity only  when in molten/aqueous solution.

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6 0
2 years ago
Sulfur has an atomic mass of 32 u and Avogadro's number is 6 × 1023 formula units/mole. The number of sulfur atoms in 1 g of sul
Vikki [24]

Answer:

The number of sulfur atoms in 1 g of sulfur is:- 1.875\times 10^{22} atoms

Explanation:

Avogadro’s number represent the number of the constituent particles which are present in one mole of the substance. It is named after scientist Amedeo Avogadro and is denoted by N_0.

Avogadro constant:-

N_a=6\times 10^{23}

Given atomic mass of sulfur = 32 u

Which means that:-

32 g of sulfur contains 6\times 10^{23} of atoms

Also,

1 g of sulfur contains \frac {6\times 10^{23}}{32} of atoms

<u>So, The number of sulfur atoms in 1 g of sulfur is:- 1.875\times 10^{22} atoms</u>

6 0
3 years ago
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