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2 years ago

Chemistry, need answer ASAP!! 50 points and i'll mark brainliest if correct! ^w^

Chemistry

1 answer:

pishuonlain [190]2 years ago

4 0

Answer:

615 g

Explanation:

In order to convert from moles of any given substance into grams, we have to use said substance's molar mass, as follows:

# moles * Molar mass = grams of substance.

Thus, we now calculate the molar mass of beryllium iodide, BeI₂, using the molar masses of the elements:

Molar Mass of BeI₂ = Molar Mass of Be + (Molar Mass of I)*2 = 262.821 g/mol

Finally we calculate how many grams are there in 2.34 moles of BeI₂:

2.34 mol * 262.821 g/mol = 615 g

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The correct option is C.
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Answer:

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Explanation:

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1. Consider the chemical equation. If there are 40 mol of NBr3 and 48 mol

Daniel [21]

Answer:

The correct answer is the third option.

Explanation:

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According to reaction, 2 moles of nitrogen tribromide reacts with 3 moles of sodium hydroxide, then 40 mol of nitrogen tribromide will react with:

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This means that in order to completely react with 40 moles of nitrogen tribromide we will need 60 moles of sodium hydroxide.

But according to the question we only have 48 moles of sodium hydroxide which is less than the 60 moles of sodium hydroxide which indicates that sodium hydroxide is present in a limited amount and nitrogen tribromide is present in an excess amount.

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2 years ago

What is the acceleration of an object if it goes from a velocity of +25 m/s to rest in 5.0 seconds?

Amanda [17]

Hello there!

The correct answer is B

Remember that acceleration is the change in velocity divided by the change in time.

So, what we need to do here is take +25 divide it by 5.0, which equals to 5

So yeah, that's how we got the acceleration :)

I hope this helps!

Good luck with your Science studies!

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