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anzhelika [568]
3 years ago
14

How does speed/velocity change

Chemistry
2 answers:
Aleksandr-060686 [28]3 years ago
5 0
Speed<span>, being a scalar quantity, is the rate at which an object covers distance. The average </span>speed<span> is the distance (a scalar quantity) per time ratio. </span>Speed<span> is ignorant of direction. On the other hand, </span>velocity<span> is a vector quantity ,it is direction-aware. 

</span>
ch4aika [34]3 years ago
4 0
Speed/velocity can be changed by friction, such as air resistance 
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List at least two chemical reactions that resulted in a yellow, orange, or red precipitate. For these reactions, list the possib
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3 years ago
Which statement explains why a C–O bond is
Nataly_w [17]

Answer: (3) The difference in electronegativity between  carbon and oxygen is greater than that  between fluorine and oxygen.

Explanation: Polarity of a molecule is due to the difference in electronegativity of the atoms. More is the electronegativity difference, more is the polarity.

Electronegativity of carbon = 2.5

Electronegativity of oxygen = 3.5

Electronegativity of fluorine = 4.0

Thus the difference in electronegativity of carbon and oxygen is=(3.5-2.5)= 1.0

Thus the difference in electronegativity of fluorine and oxygen is=(4.0-3.5)= 0.5.

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4 0
3 years ago
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What is the mole ratio between oxygen and carbon dioxide?<br><br> C25H52 + 38 O2 → 25 CO2 + 26 H2O
user100 [1]

Answer:

38 : 25

Explanation:

First thing's first, we have to confirm if the reaction is indeed balanced.

The equation of the reaction is given as;

C25H52 + 38 O2 → 25 CO2 + 26 H2O

From the reaction, 38 moles of O2 produces 25 moles of CO2

The ratio is given as;

38 : 25

4 0
3 years ago
NEED ASAP
notka56 [123]

Answer: B

Refer:

Because water molecules are polar, they interact with the sodium and chloride ions. In general, polar solvents dissolve polar solutes, and nonpolar solvents dissolve nonpolar solutes. This concept is often expressed as “Like dissolves like.

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3 years ago
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