3 years ago

Balance equations practice

Chemistry

1 answer:

Margarita [4]3 years ago

3 0

Answer:

1 - B) 2 - B) 3 - A)

Explanation:

1. C3H8 + 5O2 → 3CO2 + xH2O.. Find 'X'.

A) 3

B) 4

C) 5

D) 6

2. 4Al + 3O2 → xAl2O3. Find 'X'

A) 3

B) 2

C) 4

D) 5

3. FeCl3 + 3NaOH → Fe(OH)3 + xNACl. Find 'x'

A)3

B) 4

C)5

D)6

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Answer:

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Explanation:

Step 1: Data given

Mass of the aluminium = 200.0 grams

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Step 2: Calculate the amount of heat required

Q =m * c* ΔT

⇒with Q = the amount of heat required= TO BE DETERMINED

⇒with m = the mass of aluminium = 200.0 grams

⇒with c = the specific heat of aluminium = 0.21 cal/g°C

⇒with ΔT = the change of temperature = 10.0°C

Q = 200.0 grams * 0.21 cal/g°C * 10.0 °C

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