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Mashcka [7]
3 years ago
6

A car rolls down a ramp. What is the force acting on the car that causes the movement down the ramp?

Chemistry
1 answer:
Komok [63]3 years ago
6 0
The answer to your question is gravity. you are welcome. :-D
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Chemical reactions happen when _____. a.atoms attract or repel one another b.heat is created by friction c. two or more substanc
melomori [17]

Answer:

A

Explanation:

5 0
3 years ago
Copper, a metal known since ancient times, exists in two stable isotopic forms, 6329Cu (69.09%) and 6529Cu (30.91%). Their atomi
Svetradugi [14.3K]

Answer:

Wt. Avg. Atomic Weight => 63.35457 amu

Explanation:

Given              Isotopic             %Abundance     fractional          Wt Avg

                  At. Mass (amu)                                  abundance      contribution                    

Cu-63              62.93                      69.09              0.6909            43.4783

Cu-65              64.9278                  20.0668        0.200668        20.0668

Wt Average of all isotopes = ∑Wt Avg Contributions

=  43.4783 amu + 20.0668 amu = 63.35457 amu

7 0
3 years ago
Why does ice float?​
Trava [24]

Ice is less dense than water. Hydrogen bonding makes water more dense than when it is in the form of ice!

[email protected]@dow

3 0
3 years ago
Read 2 more answers
Explain why a propane torch is lit inside a hot air balloon during preflight preparations. Which gas law applies?
Olegator [25]

Propane torch is lit inside a hot air balloon during pre-flight preparation because the heat from the touch is needed to heat the cold air inside the balloon, so that the air will expand and become less dense and rise, thus providing a lift for the balloon. This is line with charle's law, which states that, the volume of a fixed mass of ideal gas is directly proportional to the absolute temperature. This law implies that, as the temperature of the air inside the balloon increase, the volume of the balloon also increases.

5 0
3 years ago
Read 2 more answers
If molar mass of M(OH)3 = 78 8. mass of M​
Cerrena [4.2K]

Answer:

From molar mass=total RAM of each individual element

78.8=(16+1)×3+M

78.8-51=M

27.8g/mol=M

5 0
3 years ago
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