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blondinia [14]
3 years ago
15

Of the following elements, which could be classified as a metalloid (semimetal)? Select all that apply.

Chemistry
1 answer:
FromTheMoon [43]3 years ago
4 0

Answer:

(C) Ge

(D) Si

(H) At

(J) B

Hope this helps!

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An average bushel of apples has a mass of 10 kg and contains 5 dozen apples.
Alina [70]

Answer:

Average mass of 6 apple  = 1 kg

Explanation:

Given:

Average mass of 5 dozen apple = 10 kg

Find:

Average mass of 6 apple

Computation:

Average mass of 6 apple  = [Average mass of 1 apple] x [6 apple]

Average mass of 6 apple  = [10/(12 x 5)] x [6]

Average mass of 6 apple  = 1 kg

3 0
3 years ago
How is the periodic table helpful in determining the types of bonds an element will form?
BigorU [14]
1.)b
2.)true
3.)false
are the answer don't take me on my word
6 0
3 years ago
Hydrogen chloride (HCl) is added to solid sodium hydroxide (NaOH).
SashulF [63]

Answer:

NaOH and HCl

Explanation:

The reaction of sodium hydroxide, NaOH, with hydrochloric acid, HCl, produces NaCl and water.

5 0
2 years ago
How many neutrons does the isotope lithium have<br> A.) 3 <br> B.) 5 <br> C.) 8 <br> D.) 4
Fantom [35]
The answer is D they have 4 neutrons
6 0
2 years ago
Read 2 more answers
Barium nitrate and sodium sulfate solutions can be used to precipitate barium sulfate. How many grams
-Dominant- [34]

Answer:

40.8g of sodium sulfate must be added

Explanation:

The reaction of barium nitrate, Ba(NO₃)₂ with sodium sulfate, Na₂SO₄ is:

Ba(NO₃)₂ + Na₂SO₄ → 2 NaNO₃ + BaSO₄(s)

That means, for a complete reaction of an amount of barium nitrate you must add the same amount in moles of sodium sulfate. To solve this problem we need to convert the mass of barium nitrate to moles = Moles of sodium sulfate that must be added:

<em>Moles Ba(NO₃)₂ -Molar mass: 261.3g/mol-:</em>

75g * (1mol / 261.3g) = 0.287 moles = Moles Na₂SO₄

<em>Mass Na₂SO₄ -Molar mass: 142.04g/mol-:</em>

0.287 moles * (142.04g / mol) =

<h3>40.8g of sodium sulfate must be added</h3>
7 0
3 years ago
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