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3 years ago

Most accurate glassware pipette, buret or graduated cylinder and when to use them

1 answer:

4 0

Pipette - accurate used to measure out precise volumes of liquids, used in titrations to measure out usually 25cm³

Buret - accurate used to measure out precise volumes of liquids, used in titrations to titrate the 25cm³ of a solution

Graduated cylinder - accurate used to measure out precise volumes of liquid, can be used to accurately measure out volumes of liquids when diluting solutions.

hope that helps :)

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Identify the type of reaction and the products. MgF2+KNO3 ->

Airida [17]

Answer:

double replacement MgN2O6 + KF

Explanation:

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3 years ago

What is the name of P517

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Answer:

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Explanation:

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3 years ago

If 2.1 moles of NaCl is dissolved in a solution with a total volume of 7.3 liters, what is the molarity of the solution? Round t

Arturiano [62]

Answer:

The molarity of the solution is 0.29 $\frac{moles}{liter}$

Explanation:

Molarity, or molar concentration, is a measure of the concentration of a solute in a solution, be it some molecular, ionic or atomic species. It is defined as the number of moles of solute that are dissolved in a given volume.

Molarity is calculated as the quotient between the number of moles of solutes and the volume of the solution:

$Molarity=\frac{number of moles of solute}{volume}$

Molarity is expressed in units $\frac{moles}{liter}$ .

In this case:

number of moles of solute= 2.1 moles
volume= 7.3 liters

Replacing:

$Molarity=\frac{2.1 moles}{7.3 liters}$

Molarity= 0.29 $\frac{moles}{liter}$

<u><em>The molarity of the solution is 0.29 </em></u> $\frac{moles}{liter}$ <u><em></em></u>

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2 years ago

Read 2 more answers

the element aluminum forms a cation with the charge fill in the blank 2 . the symbol for this ion is , and the name is fill in t

shtirl [24]

The element aluminum forms a cation with the charge of +3. The symbol for this ion is Al³⁺, and the name is aluminum ion. The number of electrons in this ion 10.

Ions are formed when an atom gains or loses electrons.

Metals form positive ions by a loss of electrons whereas non-metals form negative ions by gaining electrons.

The aluminum ion is formed when aluminum loses three electrons to form Al³⁺ ion which has 10 electrons.

in conclusion, ions are formed by a gain or loss of electrons.

Learn more about ions at: brainly.com/question/490569

#SPJ1

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9 months ago

Which of the following is the least reactive nonmetal? A. I B. F C. Br D. Cl

tatyana61 [14]

the answer is A. I (iodine)

no worries

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3 years ago