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True [87]
3 years ago
11

How many ions are present in iron 2 oxide

Chemistry
1 answer:
krek1111 [17]3 years ago
8 0
Iron(II) oxide also refers to a family of related non-stoichiometric compounds, which are typically iron deficient with compositions ranging from Fe0.84O to Fe0.95O.
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The answer is: D the box will NOT move or change. Hope this helps!
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3 years ago
Which of these Group 14 elements has the most metallic properties? 1. C 2. Ge 3. Si 4. Sn
seraphim [82]
I would say that the answer is Sn.
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5 0
3 years ago
Read 2 more answers
A hydrocarbon contains 85.7% carbon and the remainder
Viefleur [7K]

Answer:

CH₂ ;  67.1 %

Explanation:

To determine the empirical formula we need to find what the mole ratio is in whole numbers of the atoms in the compound. To do that we will first need the atomic weights of C and H and then perform our calculation

Assume 100 grams of the compound.

# mol C = 85.7 g / 12.01 g/mol = 7.14 mol

# mol H = 14.3 g /  1.008 g/mol = 14.19 mol

The proportion is 14.9 mol H/ 7.14 mol C = 2 mol H/ 1 mol C

So the empirical formula is CH₂

For the second part we will need to first calculate the theoretical yield for the 12.03 g NaBH₄  reacted and then calculate the percent yield given the 0.295 g B₂H₆ produced.

We need to calculate the moles of  NaBH₄ ( M.W = 37.83 g/mol )

1.203 g  NaBH₄ / 37.83 g/mol =  0.0318 mol

Theoretical yield from balanced chemical equation:

0.0318 mol NaBH₄ x 1 mol B₂H₆ / mol NaBH₄ = 0.0159 mol B₂H₆

Theoretical mass yield B₂H₆ = 0.0159 mol x 27.66 g/ mol =  0.440 g

% yield = 0.295 g/ 0.440 g x 100 = 67.1 %

6 0
3 years ago
Which element or ion listed below has the electron configuration 1s22s22p6?
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Count up the number of electrons in each orbital. theres ten electrons which means it has 10 protons. the element would be neon
7 0
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A chemical reaction in which compounds break up into simpler constituents is a _______ reaction.
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The awnser to ur question is B
7 0
3 years ago
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