Answer: 20.1 kg.
Explanation:
To calculate mass of a substance, we use the equation:
We are given:
Density of gasoline =
Volume of gasoline = (Conversion factor: )
Putting values in above equation, we get:
The rule apply for multiplication and division is :
The least precise number present after the decimal point determines the number of significant figures in the answer, thus the answer musty have three significant digits.
Hence, the mass added is 20.1 kg.
The purpose of washing the solid product with ethanol is to purify it from some organic species.
<h3>
What is Purification?</h3>
This process is common in science and is characterized by the removal of impurities from a given sample through different types of methods and techniques.
In a chemical reaction which results in the formation of solid crystals, it is best to to purify it from some organic species by washing it with ethanol.
This helps to achieve an accurate result of the product derived through the absence of impurities and prevent further reactions from occurring which is therefore the most appropriate reason in this scenario.
Read more about Purification here brainly.com/question/25799551
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Answer:
heat and pressure
Explanation:
A metamorphic rock is a changed rock. It is formed a result of mineral changes in a pre-existing rock in the presence of temperature and pressure conditions.
Metamorphic transformation in rocks begins to occur when minerals starts to change from their original and usual form. Most metamorphic rocks are formed as a result of burial into deep seated environment or when subjected to conditions that can elevate the temperature and pressure in a rock.
I believe it is a large mass of warm air rises, replacing the cooler air above