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3 years ago

Why are predictions of natural hazards important?

Chemistry

2 answers:

vovikov84 [41]3 years ago

8 0

Answer:

Good predictions and warnings save lives.

Explanation:

Predictions and warnings can also reduce damage and economic losses.

ddd [48]3 years ago

6 0

Because, a natural hazard is a threat of a naturally occurring event will have a negative effect on humans.

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How many grams is .15mol of argon

bonufazy [111]

Answer:

The answer is 39.948.

Explanation:

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3 years ago

A chemist measures the amount of bromine liquid produced during an experiment. She finds that 14.4 g of bromine liquid is produc

emmasim [6.3K]

Answer:

$\boxed{\text{0.0901 mol}}$

Explanation:

$\text{Moles} = \text{14.4 g } \times \dfrac{\text{1 mol}}{\text{159.81 g}} = \text{0.0901 mol}\\\\\text{ The sample contains $\boxed{\textbf{0.0901 mol}}$ of bromine}$

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3 years ago

Which is the fundamental law of energy?

Paraphin [41]

The first law, also known as Law of Conservation of Energy, states that energy cannot be created or destroyed in an isolated system.
So answer 1

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4 years ago

Read 2 more answers

The molecular weight of water, H2O, is 18.02 g over mol. How many moles of water are in 24.3 g of water? Express the answer usin

Zolol [24]

Answer:

1.35

Explanation Use the mole formla and multiply and them apply the sig fig rules and you will get the moles of water hope this helps god bless

4 0

3 years ago

A sample of oxygen occupies 20.1 liters under a pressure of 1520 torr at 25.0o What volume would it occupy at 25.0oC if the pres

Zolol [24]

Answer:

The volume that the sample of oxygen would occupy at 25 ° C if the pressure were reduced to 760.0 torr is 40.2 L

Explanation:

Boyle's law establishes the relationship between the pressure and the volume of a gas when the temperature is constant, so that the pressure of a gas in a closed container is inversely proportional to the volume of the container. That is, if the pressure increases, the volume decreases, while if the pressure decreases, the volume increases.

Boyle's law is expressed mathematically as:

Pressure * Volume = constant

or P * V = k

Considering an initial state 1 and a final state 2, it is true:

P1* V1= P2*V2

In this case:

P1= 20.1 L
V1= 1520 torr
P2= 760 torr
V2= ?

Replacing:

20.1 L* 1520 torr= 760 torr* V2

Solving:

$V2=\frac{20.1 L* 1520 torr}{760 torr}$

V2= 40.2 L

The volume that the sample of oxygen would occupy at 25 ° C if the pressure were reduced to 760.0 torr is 40.2 L

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3 years ago