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Advocard [28]
2 years ago
12

Back talk it’s quiet ain’t no back talk

Chemistry
2 answers:
ale4655 [162]2 years ago
7 0

Answer:

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Explanation:

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I hope you find the answer to your question?

kvv77 [185]2 years ago
7 0

Answer:

u r so real for this

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1. How many grams of NaOH are in 400.0 mL of a 0.5 M solution of NaOH?
Anit [1.1K]
1. molarity = (moles)/vol in litres
0.5=[(weight/40)*1000]/4
0.5 = weight/16
weight of NaOH = 8 grams

2. weight = 0.45*850*84/100 gms
molecular weight = 85m (not sure abt this)
3 0
3 years ago
Why is it difficult to classify dissolving as simply a physical or a chemical change? (1 point)
Likurg_2 [28]

The correct answer is:Some substances keep the same molecular structure when they break down, and others do not.

Some substances change their form when they dissolve and some do not. Dissolution can sometimes be regarded as a sort of reaction between a chemical substance and water.

Usually, we can consider dissolution of a substance in water as a sort of chemical reaction for some substances. For instance, an ionic substance interacts with water to form ions. similarly, some salts become hydrolysed in water and give acidic/basic solutions as  result of that.

However, some substances do not interact with water upon dissolution. They rather remain as molecular entities because they are not composed of ions.

We can see that some substances keep the same molecular structure when they break down, and others do not keep the same molecular structure  when they dissolve hence it is difficult to classify dissolving as a physical or a chemical change.

brainly.com/question/1161517

6 0
3 years ago
Read 2 more answers
If two poisonous elements are combined chemically, which of the following will be true of the resulting compound?The compound wi
melisa1 [442]

The compound may or may not be poisonous, depending on the chemical properties of the new substance.

6 0
3 years ago
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What structure what structural feature of cells can allow molecules to flow directly from the inside of one cell to the inside o
Rufina [12.5K]
The answer is A. Plasmodesmata. It's a narrow pathway between cells.
3 0
3 years ago
If Carl buys a 946 ml bottle of rubbing alcohol, how much of the aqueous solution is water?
Darina [25.2K]

The question is incomplete, here is the complete question:

A bottle of rubbing alcohol having aqueous solution of alcohol contains 70% (v/v) alcohol. If Carl buys a 946 ml bottle of rubbing alcohol, how much of the aqueous solution is water?

<u>Answer:</u> The amount of water present in the given bottle of rubbing alcohol is 283.8 mL

<u>Explanation:</u>

We are given:

Volume of bottle of rubbing alcohol = 946 mL

70% (v/v) alcohol solution

This means that 70 mL of rubbing alcohol is present in 100 mL of solution

Amount of water present in solution = [100 - 70] = 30 mL

Applying unitary method:

In 100 mL of solution, the amount of water present is 30 mL

So, in 946 mL of solution, the amount of water present will be = \frac{30}{100}\times 946=283.8mL

Hence, the amount of water present in the given bottle of rubbing alcohol is 283.8 mL

4 0
3 years ago
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