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Black_prince [1.1K]

3 years ago

13

Question 33 Saved

1 answer:

Tatiana [17]3 years ago

3 0

Answer:

The third option

Explanation:

If people have found more volcanic rock layers in the past that would mean that volcanic activity was more common in the past.

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A child and her mother are at the park. The child walks around the rectangular park while her mom waits on a bench. The child re

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C 1,772 is the answer for the question

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How many electrons, protons, neutrons, and what is the atomic number and atomic mass (if any) does Fluoride have?

ExtremeBDS [4]

Fluoride is an anion of Fluorine

What this means is that the two have the same number of protons (9), but Fluoride has 10 electrons compared to Fluorine's 9.

So the answers are:
Protons - 9
Neutrons - 9
Electrons - 10
Atomic Number - 9
Atomic Mass - 19 g/mol

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Energy leaves the sun as light from region called the?

tino4ka555 [31]

Late answer:
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What mass of HBO2 is produced from the<br> combustion of 139.5 g of B2H6?<br> Answer in units of g.

aliina [53]

Answer:

$m_{HBO_2}=441.8gHBO_2$

Explanation:

Hello there!

In this case, since the combustion of B2H6 is:

$B_2H_6+3O_2\rightarrow 2HBO_2+2H_2O$

Thus, since there is 1:2 mole ratio between the reactant and product, the produced grams of the latter is:

$m_{HBO_2}=139.5gB_2H_6*\frac{1molB_2H_6}{27.67gB_2H_6} *\frac{2molHBO_2}{1molB_2H_6} *\frac{43.82gHBO_2}{1molHBO_2}$

$m_{HBO_2}=441.8gHBO_2$

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Which medical condition(s) can prevent molecules from entering the cell?

kvasek [131]

Answer:

Explanation:

any type of spreading disease that kills

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