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3 years ago

A ____usually requires calculations that are too complicated to do byhand.

Chemistry

1 answer:

liraira [26]3 years ago

8 0

Answer:

computer model

Explanation:

Computer models are cheaper to set up than alternative methods that could be used to predict what will happen in a system, ex. building a prototype. Other benefits include being able to: make alterations and quickly see the outcomes.

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2 years ago

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3 years ago

How many molecules of BH3 are in 14.32 grams of BH3?

kkurt [141]

Answer:

6.23 x 10^23 molecules

Explanation:

First find the number of moles of BH3 from the information given. We know the amount of grams present and we can find the molar mass which is 13.84.

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3 years ago

Calculate the number of grams of oxygen gas in a 24L container at STP

romanna [79]

There are 34 g of oxygen in the container.

We can use the Ideal Gas Law to solve this problem.

$pV = nRT$

But $n = \frac{m}{M}$ , so

$pV = \frac{m}{M}RT$ and

$m = \frac{pVM}{RT}\\$

STP is 0 °C and 1 bar, so

$m = \frac{\text{1 bar} \times \text{24 L} \times 32.00 \text{ g}\cdot\text{mol}^{-1}}{\text{0.083 14 } \text{bar}\cdot\text{L}\cdot\text{K}^{-1}\text{mol}^{-1}\times\text{273.15 K} } = \textbf{34 g}\\$

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3 years ago

Multiple choice. Please help.

Ludmilka [50]

Answer:

7. B

8. B

9. A

10. A

11. Increases

Again..I hope it helps.✌

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2 years ago

A ____usually requires calculations that are too complicated to do byhand. ​

A ____usually requires calculations that are too complicated to do byhand.