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krok68 [10]
3 years ago
9

5. In which group of elements do most atoms have completely filled s and p velence sublevels? A) halogens B) noble gases C) alka

li mctals D) alkaline earth metals​
Chemistry
1 answer:
ivanzaharov [21]3 years ago
4 0
Noble Gases is the answer (please give me brainliest
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Barium carbonate  barium oxide and carbon dioxide balanced formula HELP ME PLEASE
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Answer:

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Explanation:

I looked at the oxygens to balance this. Ba(CO3) normally has 3 oxygens. BaO2 and CO2 have 4 oxygens total. The common multiple of 3 & 4 is 12. So there should be 12 oxygens on both sides. Then I just found the coefficients that would give 12 oxygens on both sides and can balance the rest of the atoms.

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bezimeni [28]

Answer:

the molar mass is the mass of a given chemical element or chemical compound divided by the amount of substance

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If the density of mercury is 13.6g/ml, how many ml of mercury are in 1,000 g of mercury?
Illusion [34]

Answer:

<h2>73.53 mL</h2>

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

volume =  \frac{mass}{density} \\

From the question we have

volume =  \frac{1000}{13.6}  \\  = 73.52941...

We have the final answer as

<h3>73.53 mL</h3>

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