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slega [8]
2 years ago
12

1. A pure substance contains ONLY one kind of​

Chemistry
1 answer:
mihalych1998 [28]2 years ago
7 0

Answer:

Elements

Explanation:

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How are energy and work related? A. Energy is the force needed to do work B. Work times energy is force C. Energy is the capacit
Svetllana [295]

Answer:

I believe the answer is A

Explanation:

Work and energy are related because when you work, you cause displacement in the object you are exerting upon. While this happens, you transfer energy between the systems. Both work and energy share the same SI unit, called the joule.

4 0
3 years ago
Read 2 more answers
Activation energy is (blank)
timurjin [86]

B. The energy barrier between reactants and products

hope this helps!

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7 0
2 years ago
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Multiple Choice Question
valina [46]

Answer:

Explanation:

i would say not d im not fully sure but id say c

6 0
3 years ago
Given that a 11.00 g milk bar chocolate bar contains 7.500 g of sugar, calculate the percentage of sugar present in 11.00 g of m
alukav5142 [94]

Answer:

68.18%

Explanation:

The question asking for the percentage of sugar present in milk bar chocolate. To find the percentage of a certain molecule, you have to divide the mass of the molecule with the total mass of the product. The calculation will be:

sugar percentage = sugar weight / milk bar chocolate weight * 100%

sugar percentage = 7.5g / 11g * 100%= 68.18%

7 0
2 years ago
A sample of ideal gas has a volume of 0.500-L at 25.0o C and 1.20 atm pressure. What is the volume at 75.0o C and 3.60 atm?
sergeinik [125]

Answer:

.500

Explanation:

Use the ideal gas law equation: PV = nRT

Plug in the initial values given:

P = 1.2 atm

V = .500 L

n = number of moles

R = Gas Constant 8.314

T = 25.0 C

(1.2)(.5) = n(8.314)(25)

solving for n we get .00289

Now use the same equation with the new values solving for V

(3.6)V = (.00289)(8.314)(75.0)

V = .4999999 ROund to .500

3 0
3 years ago
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