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serious [3.7K]
4 years ago
11

Which formula correctly represents the composition of iron (III) oxide?

Chemistry
2 answers:
lisov135 [29]4 years ago
8 0
Iron (III) oxide has a chemical formula of (2) Fe2O3.

Hope this helps~
shutvik [7]4 years ago
4 0
2) Fe2O3 because Oxygen has has a negative 2 charge and Iron has a -3 charge so u need 2 iron and 3 oxygen
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Mnenie [13.5K]

Answer:

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Which of the following are examples of physical properties
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Draw the structural formula for fatty acid C 18:2 9 a 12a
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............................................................................

Explanation:

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Read 2 more answers
In a science lab, a student heats up a chemical from 10 °C to 25 °C which requires thermal energy of 30000 J. If mass of the obj
olganol [36]

Answer:

The specific heat capacity of the object is 50 J/g°C ( option 4 is correct)

Explanation:

Step 1: Data given

Initial temperature = 10.0 °C

Final temperature = 25.0 °C

Energy required = 30000 J

Mass of the object = 40.0 grams

Step 2: Calculate the specific heat capacity of the object

Q = m* c * ΔT

⇒With Q = the heat required = 30000 J

⇒with m = the mass of the object = 40.0 grams

⇒with c = the specific heat capacity of the object = TO BE DETERMINED

⇒with ΔT = The change in temperature = T2 - T2 = 25.0 °C - 10.0°C = 15.0 °C

30000 J = 40.0 g * c * 15.0 °C

c = 30000 J / (40.0 g * 15.0 °C)

c = 50 J/g°C

The specific heat capacity of the object is 50 J/g°C ( option 4 is correct)

3 0
3 years ago
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