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Anni [7]
3 years ago
8

Which is true about fossil fuels?

Chemistry
2 answers:
m_a_m_a [10]3 years ago
6 0
A. i just did this test
andrew11 [14]3 years ago
4 0
The correct answer would be D. Natural gas and oil came from ancient plants, while coal came from dinosaurs.
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what is the inferred pressure, in million of atmospheres, in Earth's interior at a depth of 2900 kilometers?
NemiM [27]

Answer:

1.4 millions atmospheres

Explanation:

8 0
2 years ago
Kyle is swinging at the playground. As he moves from the top of the swing to the bottom he will _____.
Mekhanik [1.2K]

Answer:

lose potential energy and gain kinetic energy

Explanation:

trust me thats the right answer i am not goo at explanations

8 0
2 years ago
If a balloon is filled with a mixture of helium and oxygen, which gas will escape faster? Why?
Serjik [45]

Answer:

The rate of leakage will be higher for helium; its molecules move about 3 times faster than oxygen’s

Explanation:

Step 1: Data given

Molar mass helium = 4.0 g/mol

Molar mass O2 = 32 g/mol

Step 2: Graham's law

Graham's Law of Effusion states that the rate of effusion of a gas is inversely proportional to the square root of the molecular mass : 1/(Mr)^0.5

Rate of escape for He = 1/(4.0)^0.5 = 0.5

Rate of escape for O2 = 1/(32)^0.5 = 0.177

The rate of leakage will be higher for helium; its molecules move about 3 times faster than oxygen’s

4 0
3 years ago
What is the mole ratio of PCl3 to PCl5?
Ray Of Light [21]
It 1:1 I had an online review and thats the answer it told me it was.
-Hope this helped you
8 0
2 years ago
Read 2 more answers
A patient receives an injection of 2.0 ml of anesthetic. what is the equivalent of this volume in cubic centimeters?
maxonik [38]
The conversion for cm³ to ml is:
1 cubic centimetre = 1 millimetre
Therefore,
2 cubic centimetres = 2.0 millimetres
And so, your answer is E (but the cm should be cm³).
5 0
3 years ago
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