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Daniel [21]
3 years ago
7

Which BEST describes the difference between speed and velocity? A) Velocity is instantaneous.

Chemistry
2 answers:
photoshop1234 [79]3 years ago
4 0

Answer:

D.

Explanation:

Speed is a scalar which has  rate of change only . Velocity has rate of change and direction making it a vector.

aleksandrvk [35]3 years ago
3 0

Answer:

Option D describe the best this statement .

Explanation:

As velocity is the quantity which includes the rate of change as well as direction

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A student is titrating 50 mL of 0.32 M NH3 with 0.5 M HCl. How much hydrochloric acid must be added to react completely with the
Sveta_85 [38]

Answer:

The volume of HCl to be added to completely react with the ammonia is 0.032 L or 32mL

Explanation:

Using the formula

Ca Va = Cb Vb

Cb = 0.32 M

Vb = 50 mL = 50/1000 = 0.050L

Ca = 0.5 M

Va =?

Substituting for Va in the equation, we obtain:

Va = Cb Vb / Ca

Va = 0.32 * 0.05 / 0.5

Va = 0.016 / 0.5

Va = 0.032 L

The volume of HCl to be added to completely react with the ammonia is 0.032 L or 32mL

6 0
3 years ago
What is the formula used to calculate the heat required to warm or cool one phase of matter
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Answer:

SPECIFIC HEAT CAPACITY

Explanation:

Q = MC DELTA T

q = heat

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4 0
3 years ago
Melting can be best described as a process in which molecules
Savatey [412]
Gain enough kinetic energy to get past each other. Ad you heat up a substance, the temperature increases as does the kinetic energy of the particles. At a point the temperature of the substance will stop increasing. The energy is now being used to increase the potential and move the particles further apart.
5 0
3 years ago
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A test tube filled with water is placed over a funnel filled with water and a green plant called Elodea. When the plant is expos
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Explanation:

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The balanced chemical reaction for photosynthesis is:

6CO_2+6H_2O\rightarrow C_6H_{12}O_6+6O_2

Thus the bubbles produced are most likely due to oxygen.

5 0
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2 years ago
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