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3 years ago

What does population density indicate? ______

Chemistry

2 answers:

kap26 [50]3 years ago

4 0

Answer:

It indicates the ammount of individuals per unit square area

Explanation:

If you have 500 people in a 500 squared miles the population density would be 1 person every one squared mile.

ohaa [14]3 years ago

3 0

Answer:

number of individuals

Explanation:

calculated by dividing the number of people by area

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A patient needs to take 625 mg of ibuprofen twice daily. The pills in the bottle are each 250. mg. How many pills does the patie

WINSTONCH [101]

2 and a half
250 x 2 =500
250/2=125
and 125 is a half of 250
so your answer is
2 and a half

5 0

3 years ago

Read 2 more answers

Which of the following was a consequence of building the Inco Superstack?

riadik2000 [5.3K]

Answer- an increase in sulfur dioxide emissions in the Sudbury area

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3 years ago

What are the nonmentals in group 16 of the periodic table?

Kitty [74]

I can give you four oxygen, selenium, sulfur, talarium hope this helps!

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2 years ago

Give the ground-state electron configuration for silicon (SiSi) using noble-gas shorthand. Express your answer in condensed form

nydimaria [60]

Answer:

[Ne] 3s² 3p²

Explanation:

Silicon atoms have 14 electrons. The ground state electron configuration of ground state gaseous neutral silicon is 1s²2s²2p⁶3s²3p².

Using noble gas shorthand, the electronic configuration is reduced to;

[Ne] 3s² 3p². Ne s the nearest noble gas to silicon, Ne contains 8 electrons, this means there's still 4 more electrons to fill. The s orrbital can only hold 2, hence the reaing two is transferred to the p orbital.

5 0

3 years ago

A scientist measures the speed of sound in a monatomic gas to be 449 m/s at 20∘C. What is the molar mass of this gas?

Ivan

Answer:

The molar mass of the gas is 36.25 g/mol.

Explanation:

To solve this problem, we can use the mathematical relation:

ν = $\sqrt{3RT/M}$

Where, ν is the speed of light in a gas (ν = 449 m/s),

R is the universal gas constant (R = 8.314 J/mol.K),

T is the temperature of the gas in Kelvin (T = 20 °C + 273 = 293 K),

M is the molar mass of the gas in (Kg/mol).

ν = $\sqrt{3RT/M}$

(449 m/s) = √ (3(8.314 J/mol.K) (293 K) / M,

by squaring the two sides:

(449 m/s)² = (3 (8.314 J/mol.K) (293 K)) / M,

∴ M = (3 (8.314 J/mol.K) (293 K) / (449 m/s)² = 7308.006 / 201601 = 0.03625 Kg/mol.

∴ The molar mass of the gas is 36.25 g/mol.

7 0

3 years ago