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Effectus [21]
4 years ago
9

if the theoretical yield of a acetic acide in a certain experiment is 21.4 grams and the actual yield is 19.1 grams, what is the

percent yield?
Chemistry
1 answer:
Shtirlitz [24]4 years ago
7 0

Answer:

89.2 %

Explanation:

Percent yield = (Yield produced / Theoretical yield) . 100

(19.1 g / 21.4 g) . 100 = 89.2 %

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How to write equations and show units for the Total joules gained by water for the Pringle and the Total Joules per gram of food
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Answers:

1. 7500 J; 3800 J/g

Step-by-step explanation:

1. Joules gained by water

q = mcΔT

Data:

m = 100 g

C = 4.184 J·°C⁻¹g⁻¹

ΔT = 18 °C

Calculation:

q = 100 × 4.184 × 18 =7500 J

2. Joules per gram of Pringle

Energy gained by water = energy lost by Pringle

q = -mΔH

7500 J = -1.984 g × ΔH

ΔH = -7500 J/1.984 g = -3800 J/g

Pringles contain 3800 J of food energy per gram.

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3 years ago
The discharge of phosphate in detergents to the environment has led to imbalances in the life cycle of freshwater lakes. A chemi
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<h3>What is spectrometric method?</h3>
  • A technique called spectrophotometry uses light intensity measurements as a beam of light travels through a sample solution to determine how much a chemical compound absorbs light.
  • Every chemical either absorbs or transmits light across a specific spectrum of wavelengths, according to the fundamental principle.
  • There are two main techniques used among the various forms of spectrophotometry:
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3 0
2 years ago
True Or False: "the baseball fans are cheering therefore a ball was hit out of the park" is an example of an inference.
GuDViN [60]

Answer:

False

Explanation:

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3 years ago
Compound X has the same molecular formula as butane but has a different boiling point and melting point. What can be concluded a
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3 years ago
How many moles of gallium chlorate, Ga(ClO3)3, must react in order to produce 674 kJ of energy according to the following reacti
Valentin [98]

Answer:

10.3 mol Ga(ClO₃)₃

Explanation:

Let's consider the following balanced thermochemical equation.

2 Ga(ClO₃)₃(s) ⇒ 2 GaCl₃(s) + 9 O₂(s)  ΔH = - 130.4 kJ

According to the balanced thermochemical equation, 130.4 kJ of heat are released when 2 moles of gallium chlorate react. The number of moles of gallium chlorate that must react to produce 674 kJ of energy is:

674 kJ × 2 mol Ga(ClO₃)₃/130.4 kJ = 10.3 mol Ga(ClO₃)₃

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