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barxatty [35]
3 years ago
6

Which probing question lies within the scope of physics?

Chemistry
1 answer:
masha68 [24]3 years ago
7 0

Answer:

answer number C is the correct answer for this

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Iron(III) oxide is formed when iron combines with oxygen in the air. How many grams of Fe2O3 are formed when 33.4 g of Fe reacts
konstantin123 [22]

    The grams of  Fe₂O₃   that are formed is  47.68 g

<u><em>calculation</em></u>

Step 1: write   the equation for reaction

4 Fe +3O₂ → 2 Fe₂O₃

Step 2: find  the  moles  of Fe

moles = mass÷  molar mass

 = 33.4 g÷55.8 g/mol =0.5986 moles

Step 3 : use the mole ratio to determine the moles of Fe₂O₃

That is  from  equation above Fe:Fe₂O₃  is 4:2 therefore the moles of Fe₂O₃ is  =  0.5986 moles x 2/4 =0.2993 moles

Step 4 : find the mass  of Fe₂O₃

mass = mass x molar mass

The molar mass of Fe₂O₃  = (55.8 x 2 +(15.9 x3) = 159.3 g/mol

mass is therefore =  0.2993 moles x 159.3 g/mol =47.68 g

4 0
3 years ago
Read 2 more answers
What are the effects of consuming a diet made up mostly of fats?
krek1111 [17]

Answer:b. Acetoacetate concentration increases.

Explanation:

8 0
3 years ago
What is the name of the molecule below
il63 [147K]

Answer:

2-octene

Explanation:

the 8-carbon chain (oct); has a double bond (ene) is on the 2nd carbon (2-)

4 0
3 years ago
I'm trying to do question number 2.56
Lunna [17]
The answer is in the picture which is given below:

8 0
3 years ago
Find the mass of carbon in a sample of hcn with a mass of 3.37 g
dsp73

Answer:

我實際

Explanation:

我實際上不知道答案,我只是為了點數而這樣做,哈哈,祝你好運哈哈我實際上不知道答案,我只是為了點數而這樣做,哈哈,祝你好運哈哈我實際上不知道答案,我只是為了點數而這樣做,哈哈,祝你好運哈哈

7 0
3 years ago
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