3 years ago

According to the Lewis dot structure shown here how may valence electrons does chlorine have

Chemistry

1 answer:

coldgirl [10]3 years ago

6 0

The answer is to your question is C.7 Hope that is right

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I don't really understand this worksheet question.

Citrus2011 [14]

25/2 and 96/X
CROSS MULTIPLY.

2x=2,400.
divide by 2.
x=1,200.

you take the GIVEN MASS of an element, and you put it on top, the coefficient is what it’s over. i believe this is right

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3 years ago

What do most psychologists believe to be the cause of development?

sattari [20]

<span>b. interaction of nature and nurture
</span>

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3 years ago

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Finely ground nickel (II) hydroxide is placed in a beaker of water. It sinks to the bottom of the beaker and remains unchanged.

Luden [163]

Explanation:

Acid-base reaction will give salt and water.

The 2nd option is correct.

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3 years ago

A Rolaids tablet contains calcium for neutralizing stomach acid. if a Rolaids tablet neutralizes 24.65ml of 0.547m hydrochloric

Lelu [443]

There are 674 mg of calcium carbonate in a Rolaids tablet

<h3>Further explanation</h3>

Reaction

CaCO₃ + 2HCl ⇒ CaCl₂ + CO₂ +H₂O

V HCl = 24.65 ml

M HCl = 0.547

mol HCl :

$\tt 24.65\times 0.547=13.48~mlmol$

ratio mol CaCO₃ : HCl = 1 : 2, so mol CaCO₃ :

$\tt \dfrac{1}{2}\times 13.48=6.74~mlmol=6.74\times 10^{-3}~mol$

mass of CaCO₃ (MW=100~g/mol) :

$\tt 6.74\times 10^{-3}\times 100=0.674~g=674~mg$

4 0

3 years ago

Which happens when water freezes?

hodyreva [135]

Answer:

B) water changes to ice

Explanation:

since its already water, it cant be anything beginning with steam.

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