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Lady_Fox [76]
2 years ago
6

Which two energy sources were used the most in

Chemistry
1 answer:
Naily [24]2 years ago
4 0

Answer:

The 1st and 2nd ones on the top

Explanation:

Hope this helps:)

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1.For the reaction P4 O10(s) + 6H2O(l) → 4H3PO4(aq), what mass of P
Alex17521 [72]
P₄O₁₀ + 6H₂O → 4H₃PO₄
The equation shows us that the molar ratio of
P₄O₁₀ : 6H₂O = 1:6

We also know that one mole of a substance contains 6.02 x 10²³ particles. We can use this to calculate the moles of water.
moles(H₂O) = (5.51 x 10²³) / (6.02 x 10²³)
= 0.92 mole
That means moles of P₄O₁₀ = 0.92 / 6
= 0.15

Each mole of P₄O₁₀ contains 4 moles of P. 
moles(P) = 4 x 0.15 = 0.6 mol
Mr of P = 207 grams per mol
Mass of P = 207 x 0.6
= 124.2 grams
5 0
3 years ago
Read 2 more answers
Which of the following is not a correct chemical equation for a double displacement reaction? (D?)
emmasim [6.3K]
The correct answer would be the last option. A double displacement type of reaction involves the switching of places the cations and anions accordingly. The given reaction is erroneous since in the product side the anions and cations are being paired which would not make sense. The correct reaction should be 

4NaBr + Co(SO3)2 yields <span>CoBr4 + 2Na2SO3</span>
6 0
3 years ago
La etiqueta de una bebida transparente con un ligero toque anaranjado indica que contiene aga con un 15 porciento de zumo de nar
Brilliant_brown [7]

<u>Respuesta:</u>

16 gramos de vitamina C y 8 gramos de colorantes.

Explanation:

Debemos multiplicar el porcentaje de cada componente por la cantidad total (100 %) de zumo.

800 g de zumo = 100%

- Tenemos un 2 porciento (2 en 100 o 2/100) de vitamina C. Por lo tanto, la cantidad en gramos de vitamina C es:

2/100 x 800 g = 16 g

- Tenemos un 1 porciento de colorantes en el zumo (1/100). Por lo tanto, la cantidad en gramos de colorantes es:

1/100 x 800 g = 8 g

6 0
2 years ago
The use of genetics by farmers to produce more abundant and healthier crops is an application of the science of _____.
Klio2033 [76]
<h3>Question :</h3>

The use of genetics by farmers to produce more abundant and healthier crops is an application of the science of _____.

  • DNA profiling

  • biotechnology

  • molecular biology

  • nuclear genetics

<h3>Answer :</h3>

The use of genetics by farmers to produce more abundant and healthier crops is an application of the science of <u>biotechnology</u>.

So correct option is 2nd biotechnology.

<h3>Explanation :</h3>

Biotechnology is the use of biological structures and processes for useful industrial purposes, whether product or function.

5 0
2 years ago
Read 2 more answers
12 Ethene gas, CH is completely burned in excess oxygen to form carbon dioxide and water
Natali [406]

Answer:

12 Ethene gas, CH is completely burned in excess oxygen to form carbon dioxide and water

The equation for this exothermic reaction is shown.

CH 30, - 200, 2H,0

The table shows the bond energies involved in the reaction

bond

bond energy

(kJ/moly

614

413

C-C

CHH

0 0

СО

495

799

O-H

467

What is the total energy change in this reaction?

A-954 kJ/mol

B-1010 kJ/mol

C-1313 kJ/mol

D-1359 kJ/mol

Explanation:

thats all you said

5 0
3 years ago
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