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wlad13 [49]
3 years ago
6

The label of a fertilizer states that the fertilizer contains 18.1% p4o10 by mass. What is the mass percentage of phosphorus in

the fertilizer?
Chemistry
1 answer:
timurjin [86]3 years ago
7 0

The fertilizer contains 7.90 % P by mass.

<em>Assume</em> you have 100 g of fertilizer.

<em>Mass of P₄O₁₀</em> = 100 g fertilizer × 18.1 g P₄O₁₀/100 g fertilizer = 18.1 g P₄O₁₀

<em>M_r of P₄O₁₀</em> = 4 × 30.97 + 10× 16.00 = 123.88 + 160.00 = 283.88

<em>Mass of P</em> = 18.1 g P₄O₁₀ × (123.88 g P/283.88 g P₄O₁₀) = 7.90 g P  

<em>Mass % P</em> = mass/total mass × 100 % = 7.90 g /100 g × 100 % = 7.90 %

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I need help with this
Lelechka [254]

Answer:

The answer is its equal to the volume of its container.

--------------------------------------------------------------------------------

I hope this helps! :)

7 0
3 years ago
A car travels 10km in 10 min so what is the average
ipn [44]
Average speed in km/h:

S = D/T

T = 10/60 hrs
   =  0.1667

S = 10 / 0.1667
   =  59.988 km/h
4 0
3 years ago
If a carbon hydrate has 2n possible isomers, where n is equal to the number of carbon atoms in the carbon hydrate structure that
Nataly [62]

Explanation: maybe 1000000

5 0
3 years ago
How many mL of a 1.48 M calcium hydroxide solution are needed to neutralize 36.0 mL of a 1.63 M hydrochloric acid solution
Lelechka [254]

The volume (in mL) of calcium hydroxide, Ca(OH)₂ needed for the reaction is 19.8 mL

<h3>Balanced equation </h3>

2HCl + Ca(OH)₂ —> CaCl₂ + 2H₂O

From the balanced equation above,

  • The mole ratio of the acid, HCl (nA) = 2
  • The mole ratio of the base, Ca(OH)₂ (nB) = 1

<h3>How to determine the volume of Ca(OH)₂ </h3>
  • Molarity of base, Ca(OH)₂ (Mb) = 1.48 M
  • Volume of acid, HCl (Va) = 36 mL
  • Molarity of acid, HCl (Ma) = 1.63 M
  • Volume of base, Ca(OH)₂ (Vb) =?

MaVa / MbVb = nA / nB

(1.63 × 36) / (1.48 × Vb) = 2

58.68 / (1.48 × Vb) = 2

Cross multiply

2 × 1.48 × Vb = 58.68

2.96 × Vb = 58.68

Divide both side by 2.96

Vb = 58.68 / 2.96

Vb = 19.8 mL

Learn more about titration:

brainly.com/question/14356286

#SPJ1

6 0
2 years ago
a plant fertilizer contains 15% by mass nitrogen. in a container of soluble plant food. there are 10.0 oz of fertilizer . how ma
trasher [3.6K]
If we convert the ounces to grams, there are approximately 283.495 grams of plant fertiliser

If nitrogen has 15% of this, all we have to do is divide this number by 100 to get the mass of 1% and multiply it by 15.

In the end, we end up with the mass of 42.5243 g

Hope I helped! xx
7 0
3 years ago
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