1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Setler [38]
3 years ago
13

A chemistry student must write down in her lab notebook the concentration of a solution of sodium hydroxide. The concentration o

f a solution equals the mass of what's dissolved divided by the total volume of the solution. Here's how the student prepared the solution: The label on the graduated cylinder says: empty weight: She put some solid sodium hydroxide into the graduated cylinder and weighed it. With the sodium hydroxide added, the cylinder weighed . She added water to the graduated cylinder and dissolved the sodium hydroxide completely. Then she read the total volume of the solution from the markings on the graduated cylinder. The total volume of the solution was . What concentration should the student write down in her lab notebook? Be sure your answer has the correct number of significant digits.

Chemistry
1 answer:
HACTEHA [7]3 years ago
3 0

Answer:

1.099 gmL¯¹ ≈ 1.1 gmL¯¹

Explanation:

From the question given above, the following were obtained:

Mass of empty cylinder = 9.5 g

Mass Cylinder + NaOH = 31.92 g

Volume of solution = 20.4 mL

Concentration of solution =?

Next, we shall determine the mass of sodium hydroxide, NaOH. This can be obtained as as illustrated below:

Mass of empty cylinder = 9.5 g

Mass Cylinder + NaOH = 31.92 g

Mass of NaOH =?

Mass of NaOH = (Mass Cylinder + NaOH) – (Mass of empty cylinder)

Mass of NaOH = 31.92 – 9.5

Mass of NaOH = 22.42 g

Finally, we shall determine concentration of the solution as follow:

Mass of NaOH = 22.42 g

Volume of solution = 20.4 mL

Concentration of solution =?

Concentration = mass /volume

Concentration of solution = 22.42 / 20.4

Concentration of solution = 1.099 gmL¯¹ ≈ 1.1 gmL¯¹

Therefore, the concentration of the solution is 1.1 gmL¯¹

You might be interested in
What is the answer? show proof I will report you if you answer for the points​
IceJOKER [234]

Answer:

A

Explanation:

carbon dioxide is released in cellular respiration

3 0
2 years ago
About how much is one liter?
AleksAgata [21]
Look at the liter man it’s a great way to learn how much every liquid measurement is
7 0
3 years ago
GIVING BRAINLIEST!!!!!!!!
Arte-miy333 [17]

Answer:

It can't be done.

Explanation:

If you have only 5.4 g of oxygen, the most lithium oxide you can get is 7.7 g.

Only 2.3 g of lithium will react. and the other 22.3 g of lithium will not be used.

7 0
3 years ago
The lithosphere, hydrosphere, and ______________ are the abiotic parts of the planet.
VladimirAG [237]
The lithosphere, hydrosphere, and atmosphere are the abiotic parts of the planet.
8 0
3 years ago
The___ of an element is the number of
castortr0y [4]

Answer:atomic mass, neutrons in the nucleus

Explanation: because I remember from when I took honors chemistry last year we learned about this and it’s called the atomic mass when looking at an atom and the neutrons in the nucleus are effected by it.

8 0
2 years ago
Other questions:
  • Describe the ways you can know that a chemical reaction has occured
    7·1 answer
  • 150 ml of 0.1 m naoh is added to 200 ml of 0.1 m formic acid, and water is added to give a final volume of 1 l. what is the ph o
    14·1 answer
  • What is an isotope? a. A form of an element with a different number of electrons c. A form of an atom with a different amount of
    9·1 answer
  • Absolute zero is what temperature on the fahrenheit scale?
    12·1 answer
  • Attempt 3 An irregular lump of an unknown metal has a measured density of 5.50 g/mL. The metal is heated to a temperature of 153
    8·1 answer
  • 1. Convert 12.5 microliters to liters?
    12·1 answer
  • How are elements with atomic masses greater than Uranium’s made?
    10·1 answer
  • Can someone help me I am stuck on this question it would mean the world if u helped me =) have a nice day!
    12·2 answers
  • What volume of solution must be added to 4.0 mol of NaCl to make a 1.2 M solution?
    12·1 answer
  • Water can take on three forms which include ice, water, and water vapor. Which states of matter match these three forms of water
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!