3 years ago

What are 6 substances you might find in the air?

1 answer:

8 0

Standard Dry Air is made up of nitrogen, oxygen, argon, carbon dioxide, neon, helium, krypton, hydrogen, and xenon.

Hope this helps!

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Calculate the specific heat for as air if 1500.0 joules are required to raise the temperature of 50.0g from 0.0c to 40.0c

Law Incorporation [45]

The specific heat, c is 0.75 J/g°C

<u>Explanation:</u>

Heat or Energy, Q = 1500J

Mass, m = 50g

T1 = 0°C

T2 = 40°C

Specific Heat, c = ?

We know,

Q = mcΔT

Q = mc(T2-T1)

1500 = 50 X c X (40-0)

1500 = 50 X c X 40

c = 1500/ 2000

c = 0.75 J/g°C

Therefore, the specific heat, c is 0.75 J/g°C

7 0

3 years ago

2.00 L of nitrogen gas at a temperature of 210 K are cooled down until the new volume is 1.25 L. If the pressure and number of g

BabaBlast [244]

Answer:

131 K

Explanation:

The only variables are volume and temperature, so we can use Charles' Law:

V1/T1 = V2/T2

Data:

V1 = 2.00 L; T1 = 210 K

V2 = 1.25 L; T2 = ?

Calculation:

2.00/210 = 1.25/T2

Multiply each side by the lowest common denominator (210T2)

2.00T2 = 1.25 ×210

2.00T2 = 262.5

T2 = 262.5/2.00 = 131 K

The gas was cooled to 131 K.

6 0

4 years ago

Which issue is a limitation of using synthetic polymers? Check all that apply.

Margarita [4]

#1 (As trash, synthetic polymers are not biodegradable)

#2 (Landfills can easily fill up with synthetic polymers)

#4 (Recycling synthetic polymers is costly)

4 0

3 years ago

Read 2 more answers

Which type of weather is expected at the location

mr_godi [17]

Rain bc it’s hot then cools

3 0

3 years ago

Read 2 more answers

What is the (OH-) in a solution with a pOH of 6.48

inn [45]

Through manipulation of equations, we are able to obtain the equation:

$-pOH= log [ OH^{-}]$

Then we can transform the equation into:

$[ OH^{-}]= 10^{-pOH}$

Then we are able to plug in the pOH and directly get [OH-]:

$[ OH^{-}] = 10^{-6.48}$

$[ OH^{-}]=3.31* 10^{-7} M$

3 0

3 years ago