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bija089 [108]
3 years ago
6

The law of definite proportions helps us explain why water will always        A. break down into gas when heated.   B. be releas

ed or used up in a chemical reaction.   C. be used as a solvent to dissolve other compounds.   D. consist of a particular proportion of hydrogen and oxygen.
Chemistry
2 answers:
NikAS [45]3 years ago
8 0
... liquid water are two different forms of the same chemical substance, water. A chemical substance is a form of matter that has constant chemical ...
defon3 years ago
6 0

The correct answer is:

D.  consist of a particular proportion of hydrogen and oxygen.


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A cube has sides that are 0.03 m . What is the volume of the cube in liters?
Marizza181 [45]

Answer:

0.027 litres

Explanation:

volume of cube = length × base area

volume of cube = 0.03m ×( 0.03m × 0.03m )

volume of cube = 0.03m × ( 0.0009m^2 )

volume of cube = 0.000027m^3

1 cubic metre = 1000 litres

0.000027m^3 = 0.027 litres

8 0
3 years ago
Thermal energy added to a substance that is not changing state causes the substance’s temperature to
tatyana61 [14]

Answer:

increase

Explanation:

Conduction involves the transfer of electric charge or thermal energy due to the movement of particles. When the conduction relates to electric charge, it is known as electrical conduction while when it relates to thermal energy, it is known as heat conduction. Conductors include metal, steel, aluminum, copper, frying pan, pot, spoon etc.

In the process of heat conduction, thermal energy is usually transferred from fast moving particles to slow moving particles during the collision of these particles. Also, thermal energy is typically transferred between objects that has different degrees of temperature and materials (particles) that are directly in contact with each other but differ in their ability to accept or give up electrons.

Hence, thermal energy added to a substance that is not changing state causes the substance’s temperature to increase because it would absorb energy in the form of heat.

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3 years ago
Why do you think there was a rush to mass-produce penicillin around the time of World War II?
Vladimir79 [104]

Answer:

penicillin could protect mice against infection from deadly Streptococci.

Explanation:

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6 x .129 x 2= 1.55J
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N2 + 3 H2 → 2 NH3
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Answer:

B

Explanation:

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