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BartSMP [9]
3 years ago
11

How many moles of aluminum oxide are formed from 10.3 moles of Aluminum?

Chemistry
1 answer:
MissTica3 years ago
5 0

Answer:

Equation of reaction

2Al + 3O_ Al2O3

2 moles of Al _ 1 mole of Al2O3

10.3 moles of Al _ x mole of Al2O3

x =(10.3 × 1)/ 2 =5.15 mole

Therefore, 10.3 moles of Aluminum gives 5.15 moles of Aluminum oxide.

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A mixture of methanol and methyl acetate contains 15.0 wt% methanol.
Usimov [2.4K]

The mixture flow rate in lbm/h = 117.65 lbm/h

<h3>Further explanation</h3>

Given

15.0 wt% methanol

The flow rate of the methyl acetate :100 lbm/h

Required

the mixture flow rate in lbm/h

Solution

mass of methanol(CH₃OH, Mw= 32 kg/kmol) in mixture :

\tt 15\%\times 200~kg=30~kg\\\\mol=\dfrac{mass}{MW}=\dfrac{30~kg}{32~kg/kmol}=0.9375~kmol

mass of the methyl acetate(C₃H₆O₂,MW=74 kg/kmol,85% wt) in 200 kg :

\tt 85\%\times 200=170~kg\\\\mol=\dfrac{170}{74}=2.297~kmol

Flow rate of the methyl acetate in the mixture is to be 100 lbm/h.

1 kg mixture = 0.85 .methyl acetate

So flow rate for mixture :

\tt \dfrac{1~kg~mixture}{0.85~methyl~acetat}\times 100~lbm/h=117.65~lbm/h

5 0
3 years ago
Elements that are arranged in the same column on the periodic table belong to the same family of elements. the atoms of elements
Vlad [161]
The answer is: c. electrons
4 0
3 years ago
Mountain ranges are the result of many different
Effectus [21]

Answer:

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7 0
3 years ago
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When combing one's hair, the comb becomes positively charged. What happens to the hair being combed?
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Since the comb is positively charged, the hair will stick to the comb.

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6 0
3 years ago
If a compound has a molar más of 180g/mol and it’s empirical formula is CH^2O, what is it’s molecular formula?
lesya [120]

C: 12.0107 g/mol ≅ 12.00 g/mol

H: 1.00784 g/mol ≅ 1.008 g/mol

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n.30=180

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4 0
3 years ago
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