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yuradex [85]
3 years ago
8

To complete the following chemical equation, what coefficients must be added? _____ Ca(OH)2 + _____ H3PO3 yields _____ Ca3 (PO3)

2 + _____ H2O
Chemistry
1 answer:
Katena32 [7]3 years ago
7 0
This is a neutralization reaction where calcium hydroxide and phosphoric acid are reactants whereas calcium phosphate and water are the products. any chemical reaction must be balanced for it to be considered correct. to balance this reaction we should put coefficients as follows 3Ca(OH)2+2H3PO3→Ca3(PO3)2+6H2O. this reaction is balanced since we 3
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Find the average speed of a person who swims 105 m in 70 s
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Answer:

v = 1.5 m/s

Explanation:

Given that,

Distance covered by a person, d = 105 m

Time taken, t = 70 s

We need to find the average speed of the person. We know that the average speed is given by :

v=\dfrac{d}{t}\\\\v=\dfrac{105\ m}{70\ s}\\\\v=1.5\ m/s

So, the average speed of the person is equal to 1.5 m/s.

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What is the volume occupied by 4.20 miles of oxygen gas (O2) at STP
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Mountains form when plates _______.
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2 years ago
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3 years ago
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Calculate the percent by mass of a solution of Ca(NO3)2 that has 22.63 g dissolved in 896.92 g of water.
never [62]

Hey there!

To calculate the percent by mass of the Ca(NO₃)₂ we need to find the total mass first by adding.

896.92 + 22.63 = 919.55

In total, the solution is 919.55 grams.

To find the percent of Ca(NO₃)₂ in the solution, divide the mass of Ca(NO₃)₂ by the total mass and multiply by 100.

22.63 ÷ 919.55 = 0.0246

0.0246 x 100 = 2.46

Ca(NO₃)₂ makes up 2.46% of the solution.

Hope this helps!

6 0
3 years ago
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