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irina1246 [14]
3 years ago
15

A. CH,0, molar mass is 90 g/mol

Chemistry
1 answer:
Luba_88 [7]3 years ago
7 0

what is that i cant see anything?

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What is the density of an object having a volume of 8 ml and a mass of 22 grams?
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Convert 25 liters per hour to milliliters per second.
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Write an equation for the reaction that takes place during the laboratory preparation of dry hydrogen​
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3 years ago
how much energy would it take to heat a section of the copper tubing that weights about 660.0 gram, from 12.93 degree Celsius to
expeople1 [14]

Answer:

                      Q  =  2647 J

Explanation:

                    Specific heat capacity is the amount of energy required by one Kg of a substance to raise its temperature by 1 °C.

In thermodynamics the equation used is as follow,

                                                 Q  =  m Cp ΔT

Where;

           Q  =  Heat  =  ?

           m  =  mass  =  660 g

           Cp  =  Specific Heat Capacity  =  0.3850 J.g⁻¹.°C⁻¹

           ΔT  =  Change in Temperature  =  23.35 °C - 12.93 °C  =  10.42 °C

Putting values in eq. 1,

                            Q  =  660 g × 0.3850 J.g⁻¹.°C⁻¹ ×  10.42 °C

                            Q  =  2647 J

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10. When a piece of steel wool is burned it gains mass. Which explanation is consistent with the law of conservation of mass?
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Answer:

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Explanation:

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