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vesna_86 [32]
3 years ago
15

Pls help me tell me how to do this question. i only need the answer for the first 2.pls

Chemistry
1 answer:
Delvig [45]3 years ago
7 0

Answer:

Explanation:

55 and 918

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If a position time graph has a constant slope, what can you infer about the<br> acceleration?
gogolik [260]

Answer:

Acceleration is zero.

Explanation:

The slope of a position time graph gives the velocity of the body.

If the slope is constant means the velocity is constant.

Now, acceleration is the measure of the change in velocity of a body over a given time interval.

So, the acceleration of a body is directly proportional to the change in velocity of the body.

If there is no change in velocity, this means that the acceleration of the body is zero.

Here, the slope is a constant implying that the velocity is a constant. So, there is no change in velocity. This implies that the acceleration is zero for the body in the given time interval.

Thus, if a position time graph has a constant slope, one can infer that the  acceleration is zero.

5 0
3 years ago
How many mole are in 72.9g of HCI
fredd [130]
Divide by the molar mass of HCl which is 36.5g/mol grams cancels out and you are left with 1.99 mol.
3 0
3 years ago
Determine the velocity of a 55-kg skier whose kinetic energy is 8900 J
goldfiish [28.3K]

Answer:

Kinetic energy = 1/2mv^2

8900 j =1/2*55*v^2

v^2=8900*2/55

v^2=323.6

v=17.98

Explanation:

4 0
2 years ago
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UkoKoshka [18]

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5 0
3 years ago
2) Which liberates the most energy?
evablogger [386]

Answer: F(g)+e^-\rightarrow F^-(g)

Explanation:

Electron gain enthalpy is defined as energy released on addition of electron to an isolated gaseous atom.  

The amount of energy released will be maximum when the tendency to attract electrons is maximum. As flourine has atomic number of 9 and has electronic configuration of 2,7. It can readily gain 1 electron to attain stable noble gas configuration and hence liberates maximum energy.

F(g)+e^-\rightarrow F^-(g)

4 0
3 years ago
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