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3 years ago

Please help!!!!!!!!!!! I don't understand this

Chemistry

1 answer:

salantis [7]3 years ago

8 0

Answer:

6.(C) Magnesium and fluorine

7.(A) Oppositely charged ions attract

8.(C) $3$

9.(d) $BaI_2$

Explanation:

6.An ionic bond is formed between a metal and a non metal.

Magnesium is a metal and fluorine is a non metal, so they form ionic bond.

7. Ionic compounds are electrically neutral as they consist of equal and opposite charges.

8. Nitrogen has $5$ electrons in outermost orbit , $8$ is required in the outermost orbit to gain the noble gas configuration.

Thus, $8-5=3 \ needed$

9. An ionic compound has a metal and a non metal, out of those four options only barium(Ba) is the metal combined with a non metal iodine(I)

Thus $BaI_2$ best fits.

Thus those are the respective answers.

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Answer:

1. Hydrogen

Explanation:

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3 years ago

10. The Proton is special! What does it tell us? The proton tells me..

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Answer:

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3 years ago

How many significant figures are in 0.08260 L? 4 5 6

mars1129 [50]

Answer:

Explanation:

Count the digits after the first non zero number, any number after that (even zero) counts.

Hope that helped!!! k

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3 years ago

Read 2 more answers

815 yd to km (need 3 sig fig)

SpyIntel [72]

Answer: The correct answer is 0.745 km

Explanation:

We are given:

A numerical value of 815 yards

To convert this into kilometers, we use the conversion factor:

1 km = 1093.6 yards

Converting the given value into kilometers, we get:

$\Rightarrow 815yd\times \frac{1km}{1093.6yd}=0.745km$

Hence, the correct answer is 0.745 km

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2 years ago

Determine the mass of hydrogen contained in 9.06 x 1024 H2O molecules.

Elza [17]

Answer:

15.2 g H2

Explanation:

2H2O -> 2H2 + O2

9.06 x 10^24 molecules x (1 mol/6.022 x 10^23 molecules) x (2 mol H2/2 mol H2O) x (1.008 g/1 mol) = 15.2 g H2

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2 years ago