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Dima020 [189]
3 years ago
14

Sea-Floor Spreading1. The arrows on the figure show the ocean floor spreading from the ridge. What are three kinds of evidence s

cientists have found to support this idea?
A. B. C.
I NEED HELP
Chemistry
1 answer:
AlexFokin [52]3 years ago
8 0
Answer is

-B

Explanation
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The molar mass of a certain gas is 49 g. What is the density of the gas in g/L at STP?
snow_tiger [21]

Answer:

\boxed{\text{2.2 g/L}}

Explanation:

We can use the Ideal Gas Law to calculate the density of the gas.

   pV = nRT

      n = m/M           Substitute for n

   pV = (m/M)RT     Multiply both sides by M

pVM = mRT            Divide both sides by V

  pM = (m/V) RT

     ρ = m/V             Substitute for m/V

 pM = ρRT              Divide each side by RT

\rho = \frac{pM }{RT}

Data:

p = 1.00 bar

M = 49 g/mol

R = 0.083 14 bar·L·K⁻¹mol⁻¹

T = 0 °C = 273.15 K

Calculation:

ρ = (1.00 × 49)/(0.083 14 × 273.15) = 2.2 g/L

The density of the gas is \boxed{\text{2.2 g/L}}.

8 0
4 years ago
A sample of neon gas at 102 °C and a volume of 4 liters is cooled to -98 °C. What is the new volume
STALIN [3.7K]

Answer: V= 1.87 L

Explanation: Use Charles Law to solve for the new volume.

V1/T1 = V2/T2 where temperature is in Kelvin. So convert temperature to Kelvin.

4 L ( 175 K ) / 375 K

= 1.87 L

Cancel out both units of K.

8 0
3 years ago
Reacts with acid a chemical or physical property
Alex Ar [27]
And Example for Physical Property it’s : Gold Is Shiny
And Chemical and like a dry piece of paper burning
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4 years ago
The transition from the gas phase directly to the solid phase is called:
solmaris [256]
The answer is depostion
8 0
4 years ago
The number of protons plus the number of neutrons is the atom called what​
MrMuchimi

Answer:

The mass number

Explanation:

neutrons + protons = mass number

5 0
3 years ago
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