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BaLLatris [955]
3 years ago
13

A bowling ball has a mass of 6 kg. What happens to its momentum when its speed increases from 2m/s to 4 m/s?

Chemistry
1 answer:
REY [17]3 years ago
8 0
C because it is correct
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Which element is most reactive among aluminium, boron, calcium and beryllium? Give reason.
igor_vitrenko [27]

Answer:

<em>Well, if you check the reactivity series, calcium is more reactive than magnesium. This means there's a a trend of increasing reactivity as we go down the group. As beryllium is above magnesium, it must be the least reactive. Then magnesium is in the middle and the most reactive has to be calcium.</em>

4 0
2 years ago
Read 2 more answers
Convert 236 mg MgP207 to moles. Use three significant figures in your answer.​
ZanzabumX [31]
<h3>Answer:</h3>

0.00106 mole

<h3>Explanation:</h3>
  • The number of moles of a compound is calculated by dividing the mass of the compound by its molar mass.

Assuming the formula of the compound given is Mg₂P₂O₇ (magnesium pyrophosphate)

Molar mass of Mg₂P₂O₇ = 222.55 g/mol

Mass of the compound = 236 mg or 0.236 g

Therefore;

Number of moles = 0.236 g ÷ 222.55 g/mol

                             = 0.0010604

                              = 0.00106 mole ( 3 sf)

Therefore, the number of moles of Mg₂P₂O₇ are 0.00106 mole

8 0
3 years ago
An electric motor turns a belt that powers a pump. If this system is compared to the chemical reactions of the cell, which part
den301095 [7]
The electricity on which the motor runs represents ATP.

ATP, adenosine triphosphate, is the energy currency of the cell. The energy released during the process of respiration is stored in the ATP molecule, and the ATP is stored within cells. Whenever the cell requires energy for any function, it simply hydrolyzes the ATP molecule, breaking a phosphate group off and releasing energy in the process.
7 0
3 years ago
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The mass number of an atom is 15, and its atomic number is 7. The atom probably has... 8 neutrons in the nucleus. about as much
Artist 52 [7]

Answer: Option (a) is the correct answer.

Explanation:

Atomic number is the sum of only total number of protons present in an element. Whereas mass number is the sum of total number of both protons and neutrons present in an element.

For example, given atom has mass number as 15 and its atomic number is 7.

Therefore, number of neutrons present in it will be calculated as follows.

                    Mass number = no. of protons + no. of neutrons

                         15 = 7 + no. of neutrons

                    no. of neutrons = 15 - 7

                                               = 8

Thus, we can conclude that the given atom contains 8 neutrons in the nucleus.

3 0
3 years ago
Which half reaction is associated with the anode?
Marta_Voda [28]

Answer:

vgf

Explanation:

3 0
2 years ago
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