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kiruha [24]
3 years ago
5

Help me pls omg , im stuck

Chemistry
1 answer:
eimsori [14]3 years ago
8 0

Answer:

b

Explanation:

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How many moles of iron are in 50.0g of iron? How many iron atoms are in 50.0g of iron?
gayaneshka [121]

Answer:

50g iron comprises 5.376 × 1023 atoms.

Explanation:

7 0
3 years ago
Well, we might as well try a similar question. Magnesium metal reacts with hydrochloric acid to produce hydrogen gas and an aque
Andrei [34K]

Answer: Magnesium Mg

Explanation:

Oxidization is the process by which a substance either gains oxygen or losses electrons.

The chemical reaction of the above is denoted by,

Mg(s) + 2HCl(aq) -----> MgCl2(aq) + H2(g)

Mg went from a 0 to a +2 state which would mean that it lost electrons.

It was therefore oxidized.

Please do react or comment if you need clarification or if the answer helped you. This can help other users as well. Thank you.

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4 years ago
Name the element which lies in group IA and 3rd period. What is the valency of it and why?​
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3 years ago
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This terms refers to one who buys goods or services for personal use called ?
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Consumer or it might be a want... more than likely a consumer.

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4 years ago
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9) Consider the reaction of C6H6 Br2 C6H5Br HBr a. What is the theoretical yield of C6H5Br if 42.1 g of C6H6 react with 73.0 g o
Lyrx [107]

Answer:

71.7 g of C₆H₅Br are produced at the theoretical yield.

Explanation:

The reaction is:

C₆H₆ + B₂ → C₆H₅Br + HBr

This is an easy excersie, stoichiometry is 1:1

We determine moles of reactants:

42.1 g / 78g/mol = 0.540 moles of benzene

73 g / 159.80 g/mol = 0.457 moles of hydrogen bromide

Certainly, the HBr is the limiting reactant, because I need 0.540 moles of HBr for 0.540 moles of benzene and I only have, 0.457 moles.

0.457 moles of HBr will produce 0.457 of bromobenzene, at the 100 % yield reaction (theoretical yield)

We convert the moles to mass: 0.457 g . 157 g/mol = 71.7 g  

5 0
3 years ago
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