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MAXImum [283]
2 years ago
15

An atom was observed with +3 charge, n = 38, and e = 28. What is the mass number of the atom?

Chemistry
1 answer:
Finger [1]2 years ago
3 0

Answer: 66

Explanation: To find the mass number you would have to add the number of protons and the number of neutrons.

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Is the osmotic pressure of a 0.10 M solution of NaCl greater than, less than, or equal to that of a 0.10 M solution of KBr?a. eq
jonny [76]

Answer:

a. equal to

Explanation:

The <em>osmotic pressure</em> is calculated by the formula:

π = <em>i</em> * M * R * T

Where π is the osmotic pressure, M is the concentration, R is a constant, T is temperature and <em>i</em> is the van't Hoff's factor (the number of ions a compound forms when dissolved in water,<u> for both NaCl and KBr is 2</u>).

Because R is always the same, and <u>Temperature and Concentration are equal between the two solutions</u>, the osmotic pressure of both solutions are also equal.

4 0
3 years ago
Which statement explains why water is classified
hichkok12 [17]

Answer: Option (1) is the correct answer.

Explanation:

Compounds are the substances which contain two or more different elements.

Similarly, water is a compound as it is made up when two hydrogen atoms combine with one oxygen atom. Compounds can be broken down with the help of chemical reactions.

Hence, the statement water can be broken down by chemical means explains why water is classified  as a compound.

5 0
2 years ago
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Lemon juice has a pH of about 2.0, compared with a pH of about 1.0 for stomach acid. Therefore, the concentration of H in stomac
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Answer: the concentration of H in the stomach acid is greater than that of the lemon juice

Explanation:Please see attachment for explanation

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What hypothesis led to the discovery of the proton?
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When a neutral hydrogen atom loses an electron, a positively-charged particle should remain.

4 0
3 years ago
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Used to make animal Feed

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