<u>Answer:</u>
Erlenmeyer flask can be heated up with a Bunsen burner.
<u>Explanation:</u>
A bunsen burner is a lab equipment that is used to heat things that aren't made up of anything flammable. The things that are to be heated with a bunsen burner are instruments of material like borosilicate like pyrex.
An Erlenmeyer flask that also goes by the names conical flask or even a titration flask can withstand a large amount of heat from the bunsen burner as it's made up of very thick and resistant glass. A graduated cylinder will not be able to withstand that amount of heat and a plastic pipette is sure to melt.
Answer:
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Answer:
The pH of the solution is 4.69
Explanation:
Given that,
Mass of potassium = 2.643 grams
Weight of water = 50.00 mL
Weight of HCl=100.00 ml
Mole = 0.120 M
We know that,
is a basic salt.
Let's write it as KY.
The acid would become HY.
We need to calculate the moles of KY
Using formula of moles
The reaction is
The number of moles of KY is 20.98 m
initial moles = 20.98
Final moles
We need to calculate the value of pKa(HY)
Using formula for pKa(HY)
We need to calculate the pH of the solution
Using formula of pH
Put the value into the formula
Hence, The pH of the solution is 4.69
C. Sometimes
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Answer:
obsidian
Explanation:
obsidian forms when lava (magma) shoots out of the volcano, and cools rapidly