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eduard
3 years ago
13

___Fe + ___O2 →___Fe2O3 Your old bike left out in the rain starts to rust. What coefficients fill in the blanks to balance the e

quation?
A) 1,2,3 C) 2,3,2 D)4,3,2
Chemistry
2 answers:
12345 [234]3 years ago
6 0

The answer is D) 4,3,2

Just had this question

Diano4ka-milaya [45]3 years ago
4 0
D) 4Fe + 3O2 -> 2Fe3O3
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When magnesium (mg) metal is placed in hydrochloric acid (hcl), it forms magnesium chloride (mgcl2) and a gas. what gas is forme
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Magnesium in hydrochloric acid forms H2 (hydrogen) gas according to the balanced chemical equation:
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A student wants to form 2‑hexanol using acidic hydration. He finds four alkenes in the inventory cabinet that could be possible
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Answer:

Look on the picture.

Explanation:

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3 years ago
f 23.6 mL of 0.200 M NaOH is required to neutralize 10.00 mL of a H3PO4 solution , what is the concentration of the phosphoric a
Eduardwww [97]

Answer:

Explanation:

H3PO4(aq) + 3NaOH(aq) → Na3PO4(aq) + 3H2O(l)

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= 0.00472mole

let x be the no of mole of H3PO4 required of  0.00472mole of NaOH

3 mole of NaOH required ------- 1 mole of H3PO4

0.00472mole of NaOH ----------x

cross multiply

3x = 0.0472

x = 0.00157mole

[H3PO4] = mole of H3PO4 / Vol. of H3PO4

= 0.00157mole / (10*10⁻³l)

= 0.157M

<h3>The concentration of unknown phosphoric acid is  0.157M</h3>
7 0
3 years ago
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As matter changes, what happens to the energy?
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Energy, Temperature, and Changes of State

Matter either loses or absorbs energy when it changes from one state to another. For example, when matter changes from a liquid to a solid, it loses energy. The opposite happens when matter changes from a solid to a liquid.

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3 years ago
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