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DerKrebs [107]
3 years ago
12

If you lift an object that weighs 13 pounds through a distance of 3 feet, you have done foot-pounds of work.

Chemistry
2 answers:
soldier1979 [14.2K]3 years ago
8 0
It’s true that that happens
Katyanochek1 [597]3 years ago
3 0
The answer to your statement is true 

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An interpretation of the results of many tests is called A) an experiment. B) a prediction D) a theory
nydimaria [60]

Answer:

B) a prediction

Explanation:

It is not option A because an experiment is one or more tests to see the check of a phenomenon in certain circumstances.

The idea is to validate or refute a hypothesis.

It is not option C because one theory is based on many proven hypotheses.

The correct option is B, a prediction. It is the principle that will lead us to a theory.

5 0
2 years ago
Scientists think the earth is approximately how old?
tiny-mole [99]

I think the answer is approximately 4.12 billion years since the amount of years is 4.543 billion years

6 0
3 years ago
Read 2 more answers
Calculate the volume of carbon dioxide and water vapour produced and the volume of oxygen remaining, when 20.0 dm3 of propane re
laiz [17]

Answer:

80cm3 of water, and 60cm3 carbon IV oxide is formed while 20cm3 of oxygen is left unreacted.

Explanation:

From Gay-Lussac's law, there are five volumes of oxygen, 1 volume if propane, 4 volumes of water and three volumes of CO2. Applying this shows the reacting volumes as we have in the image attached, hence the volumes left after reaction.

6 0
3 years ago
Write three primary alcohol with the formula C4H8O​
pishuonlain [190]

Answer:

CH2 will be CH-CH2-CH2OH

CH3-CH will beCH-CH2OH

CH2 will be C(CH3)-CH2OH

3 0
2 years ago
As you move from bottom on the periodic table to the top shielding
masha68 [24]

Answer:

AS we move from bottom to top on periodic table shielding decreased.

Explanation:

As we move from left to right across the periodic table the number of valance electrons in an atom increase. The atomic size tend to decrease in same period of periodic table because the electrons are added with in the same shell. When the electron are added, at the same time protons are also added in the nucleus. The positive charge is going to increase and this charge is greater in effect than the charge of electrons. This effect lead to the greater nuclear attraction.

As we move down the group atomic radii increased with increase of atomic number. The addition of electron in next level cause the atomic radii to increased. The hold of nucleus on valance shell become weaker because of shielding of electrons thus size of atom increased.

As we move from bottom to top the energy level decreased because of decreased in electron thus shielding decreased and atomic size also decreased.

3 0
3 years ago
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