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11111nata11111 [884]
3 years ago
12

Which of these is an example of chemical change

Chemistry
1 answer:
Margaret [11]3 years ago
8 0

Answer:

Burning, cooking, rusting and rotting are examples of chemical changes.

Explanation:

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Electrical energy is used to turn the blades of a fan. The amount of energy transformed is seen here: 750 J electrical energy is
Alchen [17]

B) It was transformed into 350 J of heat energy.

Explanation:

The remaining 350J of energy must have been transformed into 350J of heat energy.

A fan works by converting electrical energy into heat energy.

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Third law of thermodynamics brainly.com/question/3564634

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4 years ago
PLEASE HELP!!!!!<br><br> Calcium hydroxide is _____.<br><br> an acid<br> a base<br> a neutral
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3 years ago
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Rainbow [258]

Answer:

3.6km = 3.6e+6mm

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6 0
3 years ago
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Does anyone know how to do this?
Sloan [31]

Answer

find out the number of moles and use the molar ratio (numbers in front of formulas (in this case they are all 1) to determine how many moles of each product you are going to get theoretically

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30.8 gm/32.04 g/mol=0.9612 moles of the methanol and also of the formaldehyde so

0.9612 moles of the formaldehyde x molar mass (M) 30.73 g/mol= 29.54 gm which is the theoretical yield you already have the actual yield of 24.7 gm

then divide the actual by the theoretical to get the % yield which is 83.6%

Explanation:

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3 years ago
W (3/3) What are the three (3) parts that make up an atom? Please provide name, charge, location, and mass.
lukranit [14]

Answer:

Protons= Positive charge

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Electron travels around the nucleus

Explanation:

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