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Bogdan [553]
3 years ago
8

300×175 Express your answer using the correct number of significant figures.

Chemistry
1 answer:
icang [17]3 years ago
3 0

Answer:

300×175=52500

Explanation:

caculator

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Can somebody answer this please
Murrr4er [49]

The answer should be A.

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3 years ago
A particle has 5 protons, 6 neutrons, and 5 electrons. What is its net charge.
Trava [24]
It would have a zero charge because it is a neutral atom. The number of electrons which is a negative charge is equal to the number of protons which is positive, they will cancel each other out hence meaning it will become neutral
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Which substance can be broken down by chemical means?
zepelin [54]
Methanol is the substance that can be broken down by chemical means, the remaining ones are elements.
4 0
4 years ago
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Because water molecules are polar and carbon dioxide molecules are nonpolar,
Gala2k [10]

The correct is D.

Water is a polar molecule and it has polar bonds, which carry partially positive and partially negative charges. This polar bond increases the attraction between molecules of water and thus it requires a greater energy to break the bond between the molecules of water compare to carbon dioxide, which is a non polar molecule. Thus, water has a higher boiling point than carbon dioxide.

4 0
3 years ago
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How many moles of water are produced from 15 moles of oxygen?
Grace [21]

Answer:

30 moles

Explanation:

Water is H2O, meaning there is 2 Hydrogen atoms and 1 Oxygen atom. Oxygen is O2, because it is a diatomic molecule. (Hydrogen is also a diatomic molecule, so H2)

The equation, balanced, would have to be: 2H2 + O2 -----> 2H2O

I multiply 15 moles O2 by the molar ratio of (hydrogen/oxygen)

15 mol. O2 *  (2 mol. H2/1 mol O2) = 30 moles of water

8 0
3 years ago
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