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ira [324]
3 years ago
7

How do you know when a boy likes you? A. He talks to you a lot B. He is mean to you C. He hugs you a lot D. He tries to take you

r stuff from you
Chemistry
2 answers:
Kaylis [27]3 years ago
4 0

Answer:

I guess it is A he talks to u alot but boys are different so it could be each one u know?

I am Lyosha [343]3 years ago
3 0

Answer:

I feel it would be C or D but more likely to be D

Explanation:

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Explain in a short sentence how you can tell a reaction is a decomposition reaction.
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Answer: A decomposition reaction occurs when one reactant breaks down into two or more products.

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PLEASE HELP!!!! <br><br> Draw a representation of John Dalton’s atomic model.
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Answer:

John Dalton's Atomic Model Below ⬇

Explanation:

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Instruction
valkas [14]

Answer:

A: object 1

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4 0
3 years ago
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If 15.0 mL of phosphoric acid completely neutralizes 38.5 mL of 0.150 mol/L calcium hydroxide, what is the concentration of the
Sedbober [7]

Answer:

Let me give it a try.

H3PO4 + Ca(OH)2 = Ca3(PO4)2 + H2O

Balancing this reaction

2H3PO4 + 3Ca(OH)2 == Ca3(PO4)2 + 6H2O.

Moles= Molarity x Volume

Volume = 38.5ml = 0.0385L

Moles of Ca hydroxide = 0.150m/L x 0.0385L

(Notice the units canceling out...leaving moles).

=0.005775moles of Ca(OH)2.

From balanced reaction...

3moles of Ca(OH)2 completely reacts with 2moles of H3PO4

0.005775moles of Ca(OH)2 would completely react with....

= 0.005775 x 2/(3)

=0.00385moles of H3PO4.

Now we're looking for its Concentration in Mol/L

Molarity=Moles of solute/Volume of solution(in L)

Volume of solution assuming no other additions to the reaction = 15ml + 38.5ml =53.5ml =0.0535L

Molarity = 0.00385/0.0535

=0.072Mol/L.

If this is wrong

then Simply Try The formula for Mixing of solutions

C1V1 = C2V2

0.15 x 38.5 = C2 x (15+38.5)

C2 = 0.11M/L.

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2 years ago
Consider the balanced equation
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4:2. You are comparing the coefficients of NH3 and N2
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3 years ago
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