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zloy xaker [14]
3 years ago
7

*WILL GIVE BRAINLIEST IF SOMEONE ANSWERS THIS CORRECTLY ASAP!!!!*

Chemistry
2 answers:
natima [27]3 years ago
6 0

Answer:

Best answer choice is "<u>Mass of the graduated cylinder with the liquid in </u><u>it</u> "

Explanation:

if they want to determine density of liquid they'll use D= m/v

  • they already have the volume (v)
  • now they just need the mass (m) of the liquid (BUT NOT OF THE CYLINDER) You'll want the LIQUID'S mass (m) ONLY
  • So <em>"</em><em>Mass of the graduated cylinder with the liquid in it</em><em>"</em> = Liquid's mass WITH the cylinder's mass ALSO, let's get rid of the cylinder's mass
  • now you get the liquid's mass by itself
  1. mass of graduated cylinder with liquid in it subtracted by the <em>Mass</em><em> </em><em>of</em><em> </em><em>empty</em><em> </em><em>graduated</em><em> </em><em>cylinder</em><em> </em><em>=</em><em> </em><em>(</em><em>m</em><em>)</em><em> </em>mass of liquid
  2. (m) mass of liquid ÷ (v) volume of liquid in the graduated cylinder = (D) Density
  3. So your answer will be "Mass of the graduated cylinder with the liquid in it"
My name is Ann [436]3 years ago
6 0

Answer:

the answer is C

Explanation:

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The  molarity of the solution is 0.1625M.

<h3>What do you meant by Molarity</h3>

Molarity is the amount of a substance in a certain volume of solution. Molarity is  defined as the moles of solute per litres of a solution .

Molarity → no of moles / Volume (L)

SI unit of Molarity is M or mol/ L

We have given here the mass of solution is 3.10×10²g .

molality of the solution is 0.125m

Molality → no of moles / mass in kg

→  0.125×3.10×10²/ 1000

→ no.of moles = 0.0162

For  molarity we can assume volume as 1000 ml .

Molarity = 0.0162×1000/ 100

 Molarity →0.162 M.

So, the molarity of solution will be 0.162M.

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Which pair of elements can be used to determine the age of a fossil that is over one billion years old?
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Explanation:

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Draw the best Lewis structure for NH3 by filling in the bonds, lone pairs, and formal charges. (Assign bonds, lone pairs, radica
kiruha [24]

Answer :  The Lewis-dot structure of NH_3 is shown below.

Explanation :

Lewis-dot structure : It shows the bonding between the atoms of a molecule and it also shows the unpaired electrons present in the molecule.

In the Lewis-dot structure the valance electrons are shown by 'dot'.

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Now we have to determine the formal charge for each atom.

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Hence, the Lewis-dot structure of NH_3 is shown below.

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