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3 years ago

Air pressure decreases more rapidly with altitude within a column of air than in a column of __ air.

1 answer:

4 0

Air Pressure drops more rapidly with altitude in a column of cold air than in warm air.The answers to this question are cold air and warm air, respectively.
<span>Cold air is known to be dense while warm air is known otherwise to be less thens which makes it move upwards. Cold air experiences more pressure as it moves upwards.</span>

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A rock is found to have a mass of 200 g and a volume of 100 ml. what is the rock's density?

GaryK [48]

Mass over volume
200 over100
2

4 0

3 years ago

Enthalpies of reaction calculated from bond energies and from enthalpies of formation are often, but not always, close to each o

jolli1 [7]

The enthalpy change in a reaction is given by-

ΔH°rxn = ∑nΔH°f,products - ∑nΔH°f,reactants

This can be expressed in terms of bond energy as-

ΔH°rxn = BEreactants - BEproducts

Therefore, the calculated bond energy according to the above equation will be-

ΔH°rxn = [ (C-C) + 2(C-O) + 4(C-H) + 2(O-H) ] - [ (C-C) + 2(C-O) + 4(C-H) + 2(O-H) = 0 kJ/mol

<h3>What is enthalpy change?</h3>

Enthalpy change is a measure of the energy emitted or consumed in a reaction. This can be determined using the following equation which involves standard enthalpy of reactant and product formation:

ΔH°rxn = ∑nΔH°f,products - ∑nΔH°f,reactants

<h3>What is bond energy?</h3>

Bond energy is defined as the amount of energy needed to dissociate a mole of molecules into their individual atoms.

Learn more about the Enthalpy Change here:

brainly.com/question/14047927

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6 0

2 years ago

NEED ANSWER, ASP! WILL MARK BRAINLIEST!!

Phoenix [80]

Answer:

Answers are below

Explanation:

1. A

2. B

3. A

4. A

5. A

6. B

7. A

8. B

9. B

10. B

11. A, B

12. A

13. A

14. A,B

15. A

16. Not sure

17. Maybe both not sure

18. A

7 0

3 years ago

Are mass vs. density the same

Ierofanga [76]

Mass is the amount of matter in an object. Density is the degree of compactness of a substance

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3 years ago

What term represents a compound

alukav5142 [94]

Compound can be described using element symbol and numbers . it is a mixture which is result of two or more chemical element in such a way that atoms of different elements held together by chemical compound that are difficult to break . Most often a compound looks and behave like an element
for example :- Hydrogen and oxygen .. both of these elements are gaseous at room temperature and atmospheric pressure , but when both combined they both form compound water . ( H2O )

6 0

3 years ago

Air pressure decreases more rapidly with altitude within a column of ________ air than in a column of __________ air.

Air pressure decreases more rapidly with altitude within a column of air than in a column of __ air.