A lot of heat like a lot no cap it’s gonna he a lot
It is important in gravimetric analysis to add an excess amount of precipitating ions to a solution containing an analyte because it helps to determine the mass of the analyte.
<h3>What is Gravimetric analysis?</h3>
This is a method which is used in the determination of the quantitative determination of the ion being analyzed(analyte) based on its mass.
Adding an excess amount of precipitating ions to a solution containing an analyte will make it easier for the mass of an analyte to be determined.
It is also important for the precipitate to be a pure substance with a definite and known composition which therefore makes it the most appropriate reason.
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14040/4=3510 wheels per 4 nuts
3510/4=877.5 cars per 4 wheels
877 possible cars.
actual yield 850/theortical yield 877=96.92%
Answer:
Option (D)
Explanation:
The super-heating is usually defined as a phenomenon where a certain amount of energy is needed to raise the temperature of the water vapor beyond its normal saturation point. This is also known as the boiling delay.
The super-heat can be mathematically written as:
Super-heat = Current temperature - Boiling point of the liquid.
Thus, super-heat refers to the amount of energy that is required to increase the temperature of vapor beyond its point of saturation.
This super-heat is essential as it helps in preventing the damages of machines like air conditioner, fridge and also helps in their soft running.
Hence, the correct answer is option (D).
Answer:
CaCl₂
Explanation:
First we <u>convert the given masses of elements into moles</u>, using <em>their respective molar masses</em>:
- 0.900 g Ca ÷ 40 g/mol = 0.0225 mol Ca
- 1.60 g Cl ÷ 35.45 g/mol = 0.045 mol Cl
Now we divide those numbers of moles by the lowest value among them:
- 0.0225 mol Ca / 0.0225 mol = 1
- 0.045 mol Cl / 0.0225 mol = 2
Meaning the empirical formula for the compound is CaCl₂.
