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Semenov [28]
2 years ago
8

A 500.0 mL sample of 0.18 MHClO4 is titrated with 0.27 MCsOH. Determine the pH of the solution after the addition of 250.0 mL of

CsOH.
Chemistry
1 answer:
NNADVOKAT [17]2 years ago
7 0

Answer:

or i go

Explanation:

i must go ooon sjsj

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Ulleksa [173]

Answers:

See below  

Step-by-step explanation:

1. Most food energy

(a) Pringles

Heat from Pringles + heat absorbed by water = 0

m₁ΔH  + m₂CΔT = 0

1.984ΔH + 100 × 4.184 × 18 = 0

1.984ΔH + 7530 = 0

ΔH = -7530/1.984 = -3800 J/g

(b) Cheetos

0.884ΔH + 418.4 × 13 = 0

ΔH = -5400/0.884 = -6200 J/g

Cheetos give you more food energy per gram.

(c) Snickers

Food energy = 215 Cal/28 g × 4184 J/1 Cal = 32 000 J/g

The food energy from Cheetos is much less than that from a Snickers bar

2. Experimental uncertainty

The experimental values are almost certainly too low.

Your burning food is heating up the air around it, so much of the heat of combustion is lost to the atmosphere.

3. Percent efficiency

Experimental food energy = 3800 J/g

Actual food energy = 150 Cal/28 g × 4184 J/1 Cal = 22 000 J/g

% Efficiency = Experimental value/Actual value × 100 %

                    = 3800/22 000 × 100 %

                    = 17 %

6 0
2 years ago
Maya wrote if you step to describe how carbon circulates between the atmosphere and living organisms
guapka [62]

A). Carbon enters the atmosphere as carbon dioxide from respiration and combustion.

5 0
3 years ago
ATP is considered to be an energy carrier molecule. Where is the energy actually located in this molecule?
bixtya [17]
ATP is considered to be an energy carrier molecule. Energy is actually located in this molecule B in the bonds between phosphate groups. 
3 0
3 years ago
Read 2 more answers
Fine-grainted igneous rocks form?
Harman [31]
In molten lava like all the rest.

Hope it helped!!!
5 0
3 years ago
Temperature is an example of a categorical variable a quantitative variable either a quantitative or categorical variable neithe
ludmilkaskok [199]

Answer: Temperature is an example of a quantitative variable

Explanation:

A quantitative variable is defined as :

  • A variable that can assume a numerical value .
  • It can be ordered with respect to either magnitude or dimensions.
  • It is further classified into two types : interval scale and ratio scale.

Temperature comes under interval scale , because interval scale has no zero point.

For example : A 0° C Celsius does not interpret that there is no temperature.

Therefore , Temperature is an example of a quantitative variable.

Hence, the correct answer is "quantitative variable"

5 0
3 years ago
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