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rusak2 [61]
3 years ago
14

Which of the following pieces of laboratory equipment is not directly used to make measurements?

Chemistry
2 answers:
pychu [463]3 years ago
8 0
Test are not directly used to make measurements, I mean you could use them to put 4 mL of a substance in, but not to measure out 4 mL, like with graduated cylinders. Rulers can be used to measure the length of something, like the number of inches. And a thermometer will help you measure the temperature of something.
Reptile [31]3 years ago
4 0

Which of the following pieces of laboratory equipment is not directly used to make measurements?


a.

test tube

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A covalent bond is a form of chemical bonding between two non-metals, whereas ionic bonding is a bond between a metal and a non-metal.
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1.What is another term for the 24 hour clock?
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What mass of solute must be used to prepare 500ml of 0.100M aqueous sodium borate Na2B4O7 from solid hydrated sodium borate Na2B
motikmotik

0.000132 g of hydrated sodium borate (Na₂B₄O₇ · 10 H₂O)

Explanation:

First we need to find the number of moles of sodium borate (Na₂B₄O₇) in the solution:

molar concentration = number of moles / volume (L)

number of moles = molar concentration × volume (L)

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We know now that we need 0.05 moles of hydrated sodium borate (Na₂B₄O₇ · 10 H₂O) to make the solution.

Now to find the mass of hydrated sodium borate we use the following formula:

number of moles = mass / molar weight

mass =  number of moles × molar weight

mass of hydrated sodium borate = 0.05 / 381 = 0.000132 g

Learn more about:

molar concentration

brainly.com/question/14106518

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4 0
3 years ago
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solmaris [256]

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In chemistry, "concentrated" refers to a relatively large quantity of substance present in a unit amount of a mixture. Usually, this means there is a lot of ​a solute dissolved in a given solvent. A concentrated solution contains the maximum amount of solute that can be dissolved.

Explanation:

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In order to calculate the amount of heat energy required to melt 347 grams of ice, we need to will apply the equation:
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Q = 112,558 joules of energy
8 0
2 years ago
Read 2 more answers
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