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3 years ago

Which phrase describes air density?

Chemistry

2 answers:

saw5 [17]3 years ago

7 0

Answer:B equals mass divided by volume

Explanation:I got hacks :)

adell [148]3 years ago

7 0

Answer:

Which phrase describes air density? well b

increases as altitude increases

equals mass divided by volume

pushes molecules in one direction

exerts less pressure as it increases

Explanation:

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Convert 3.45 g/ml to lb/in^3

Alja [10]

<span>The answer is

0.124639157 pounds.

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3 years ago

Green plants absorb sunlight to power photosynthesis, the chemical synthesis of food from water and carbon dioxide. The compound

tekilochka [14]

Answer: The frequency of this light is $6.74\times 10^{17}Hz$ .

Explanation:-

To calculate the frequency of light, we use the equation:

$\lambda=\frac{c}{\nu}$

where,

$\lambda$ = wavelength of the light = $430nm=430\times 10^{-9}m$ $1nm=10^{-9}m$

c = speed of light = $2.9\times 10^8m/s$

$\nu$ = frequency of light = ?

$\nu=\frac{c}{\lambda}$

$\nu=\frac{2.9\times 10^8m/s}{430\times 10^{-9}m}$

$\nu=\frac{2.9\times 10^8m/s}{430\times 10^{-9}m}=6.74\times 10^{17}s^{-1}=6.74\times 10^{17}Hz$

The frequency of this light is $6.74\times 10^{17}Hz$ .

4 0

4 years ago

In an electrically neutral atom,

Soloha48 [4]

Answer:

the number of protons equals the number of

electrons

Explanation:

Because these particles have the same but opposite charges, equal numbers cancel out, producing a neutral atom.

3 0

3 years ago

Consider the following reversible reaction. What is the equilibrium constant expression for the given system?

ladessa [460]

The question is incomplete. Complete question is attached below
..........................................................................................................................

Answer:
Equilibrium constant (K) is defined as the ratio of concentration of product to concentration of reactant.

For the reaction: 2H2O(g) ↔ 2H2(g) + O2(g)

Equlibrium constant = $\frac{[H_2]^2[O_2]}{[H_20]^2}$

[ ] bracket in above expression indicates concentration.