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3 years ago

Atoms of noble gases are generally inert because..

Chemistry

1 answer:

umka21 [38]3 years ago

4 0

Answer:

B. their outer electron levels are filled

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A gas occupies 40.0 mL at 150 K. What volume does it occupy at 300 K,

nlexa [21]

Answer:

.08 L or 80 ml

Explanation:

Use the equation V/t = V/t.

.04L / 150K = V / 300K

.04 / 150 * 300 = V

.08 L or 80 ml

6 0

3 years ago

A scientist produces zinc iodide (zni2). (a) calculate the minimum mass of zinc that needs to be added to 0.500 g of iodine so t

harina [27]

The minimum mass of Zinc, Zn that needs to be added to 0.500 g of iodine so that the iodine fully reacts is 0.128 g

<h3>Balanced equation </h3>

Zn + I₂ —> ZnI₂

Molar mass of Zn = 65 g/mol

Mass of Zn from the balanced equation = 1 × 65 = 65 g

Molar mass of I₂ = 127 × 2 = 254 g/mol

Mass of I₂ from the balanced equation = 1 254 = 254 g

SUMMARY

From the balanced equation above,

254 g of I₂ required 65 g of Zn

<h3>How to determine the mass of Zn needed </h3>

From the balanced equation above,

254 g of I₂ required 65 g of Zn

Therefore,

0.5 g of I₂ will require = (0.5 × 65) / 254 = 0.128 g of Zn

Thus, the minimum mass of Zn required is 0.128 g

Learn more about stoichiometry:

brainly.com/question/14735801

4 0

2 years ago

What ozone layer do we live in

daser333 [38]

What ozone layer do we live in?

Answer: We live in the troposphere. There are 4 ozone layers: Troposphere, Stratosphere, mesosphere and atmosphere(of course)
The troposphere is the first layer<span> above the surface and contains half of the </span>Earth's atmosphere<span>. Weather occurs in this </span><span>lay</span>

7 0

4 years ago

A car travels 75 mi/hr. How many hours will it take to travel 837 km? (Pick the answer closest to the correct answer,

nlexa [21]

Answer:

6.9 hours

Explanation:

In order to solve this problem we'll<u> convert 837 km to miles</u> (another option would be to convert 75 mi/hr to km/hr). To make said conversion we'll use the given <em>conversion factor</em>:

837 km * $\frac{1mi}{1.61km}$ = 519.88 mi

Finally we <u>calculate the time required to travel said distance</u> at a constant speed of 75 mi/hr:

519.88 mi ÷ 75 mi/hr = 6.9 hr

5 0

3 years ago

PLEASE HELP ME :(((

sineoko [7]

Answer:

about 93 billion light years

Explanation:

The observable Universe is, of course, much larger. According to current thinking it is about 93 billion light years in diameter.

7 0

3 years ago