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jeka57 [31]
3 years ago
11

Why do we have to write the background of the study​

Chemistry
1 answer:
lesya [120]3 years ago
6 0

Answer:

Writing down background information can help you to remember what you learned and can be used for notes in the future when taking an assessment.

Explanation:

Can I get brainliest? It's for a challenge

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A lemon juice cleans a penny. I believe this to be the answer because the lemon cleans the penny but no molecules change
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Help me out ! What’s the answer
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5 0
3 years ago
Ensure you write the states of the reactants and products.
slamgirl [31]
<h3>Answer:</h3>

Phosphoric acid reacts with magnesium hydroxide to produce magnesium phosphate and water via the following reaction:

2H3PO4 + 3Mg(OH)2 → Mg3(PO4)2 + 6H2O

(solid) (solid) (solid) (liquid)

<h3>Explaination:</h3>

This is a typical neutralization reaction of an acid with a base to form a salt and water. The reaction is exothermic, gives off heat,

ΔH < 0 , and may be balanced by adding balancing numbers in front, ie adding molecules, in order to ensure that the total number of atoms of each element is the same on the left and right hand sides of the equation.

Doing so we obtain :

2H3PO4 + 3Mg(OH)2 → Mg3(PO4)2 + 6H2O

(solid) (solid) (solid) (liquid)

<h3>hope it helps :)</h3>
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3 years ago
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