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Gnom [1K]
3 years ago
6

Consider the connotation of the underlined word in each sentence, and then match each sentence to the best

Chemistry
1 answer:
Ivan3 years ago
7 0

Answer: This image is the answer to this question.

Explanation:

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Which would have the highest first ionization energy?
LekaFEV [45]

Answer:

Thus, helium has the largest first ionization energy, while francium has one of the lowest.

7 0
2 years ago
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 An atom that has lost or gained electrons is known as an ion. Which compound below is made up of ions?
nordsb [41]
<h3>ANSWER:</h3>

(C) KBr

<h3>EXPLANATION:</h3>

An ionic compound is made up of a metal and a nonmetal. K is a metal while bromine is a nonmetal. Thus K transfers its one electron to bromine in order to form an ionic compound.

4 0
3 years ago
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Stainless steel is an alloy of iron containing 5 percent nickel and 0.175 percent chromium. How many atoms of nickel are present
erica [24]
First you need to work out what mass of 84g of stainless steel is nickel, and because there's 5% you can simply divide by 20, giving 4.2g

For this you can use the equation Moles= \frac{Mass}{Mr}

The mass, as was worked out previously, is 4.2g
The Mr, which is found on the periodic table, is 28

Moles = \frac{4.2}{28} = 0.15mol

1mol = 6.023 x 10^{23} atoms

So, 0.15mol = 0.15 x 6.023 x 10^{23} = 9.0345 x 10^{22} atoms


3 0
3 years ago
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A compound of low solubility
fenix001 [56]

Answer:

b. is always a weak electrolyte.

Explanation:

Such compounds of low solubility dissociates partly and hence cannot be strong electrolytes

4 0
3 years ago
What is the [OH-] in a solution<br> with a pol of 7.86?
yulyashka [42]

Answer:

pH of 7.86, then the [OH-] is equal to 10^(14-7.86) = 10^6.14 M

Explanation:

3 0
3 years ago
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