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3 years ago

8. How many moles of carbon dioxide are there in 52.06 g of carbon dioxide?

Chemistry

2 answers:

Lelechka [254]3 years ago

5 0

Answer:

B) 1.183

Explanation:

To convert from grams (mass) to moles, we need to divide by the atomic mass (amu)..

The amu of $CO_{2}$ is 44.008

52.06/44.08 = 1.182966733

This can be rounded to 1.1830 moles of CO2

Blababa [14]3 years ago

3 0

Your answer is B !! 1.183 moles of carbon dioxide are in 52.06 g of carbon dioxide.

Can you please mark me BRAINLEST?

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3 years ago

A fog over a lake. what two changes of state must occur to produce the fog? do the water molecules absorb or release energy duri

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3 years ago

Read 2 more answers

The absolute temperature of a gas is increased four times while maintaining a constant volume. What happens

poizon [28]

Answer:

It increases by a factor of four

Explanation:

Boyle's Law : At constant temperature , the volume of fixed mass of a gas is inversely proportional to its pressure.

pV = K.......(1)

pV = constant

Charles law : The volume of the gas is directly proportional to temperature at constant pressure.

V = KT

or V/T = K = constant ....(2)

Applying equation (1) and (2)

$\frac{PV}{T}=K$

$\frac{P_{1}V_{1}}{T_{1}}=\frac{P_{2}V_{2}}{T_{2}}$

According to question ,

T2 = 4 (T1)

V2 = V1

Put the value of T2 and V2 , The P2 can be calculated,

$\frac{P_{1}V_{1}}{T_{1}}=\frac{P_{2}V_{1}}{4T_{1}}$

V1 and V1 cancel each other

T1 and T1 cancel each other

We get,

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3 years ago

Night visin cameras are sensitive to energies around 2.21 x 10-19 J. What wavelength of electromagnetic radiation do they use?

defon

Answer:

8.99×10^-7m

Explanation:

The wavelength can be calculated using the expression below

E=hcλ

Where E= energy= 2.21 x 10^-19 J.

C= speed of light= 3x10^8 m/s

h= planks constant= 6.626 × 10^-34 m2 kg / s

E=hcλ

λ= E/(hc)

Substitute for the values

λ=( 2.21 x 10^-19 )/(6.626 × 10^-34 × 3x10^8 )

= 8.99×10^-7m

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3 years ago