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
Nina [5.8K]
3 years ago
15

A student was asked to prepare 500.0 mL of 6.0 M NaOH. The student measured 120.0 g of NaOH and placed it in a 1000 mL beaker. T

he student then added 500.0 mL of distilled water to the beaker and stirred until all of the NaOH had dissolved. The resulting solution is not 6.0 M. Is the concentration too high or too low? Explain and describe the proper technique for preparing this solution. 黑鬼
Chemistry
1 answer:
Morgarella [4.7K]3 years ago
7 0

Answer:

The concentration of the solution will be much lower than 6M

Explanation:

To prepare a solution of a solid, the appropriate mass is taken and accurately weighed in a weighing balance and then made up to mark with distilled water.

From

n= CV

n = number of moles m/M( m= mass of solid, M= molar mass of compound)

C= concentration of substance

V= volume of solution

m=120g

M= 40gmol-1

V=500ml

120/40= C×500/1000

C= 120/40× 1000/500

C=6M

This solution will not be exactly 6M if the student follows the procedure outlined in the question. The actual concentration will be much less than 6M.

This is because, solutions are prepared in a standard volumetric flask. Using a 1000ml beaker, the student must have added more water than the required 500ml thereby making the actual concentration of the solution less than the expected 6M.

You might be interested in
Type the correct answer in the box.
Murljashka [212]

Answer:

<em>a= In scientific notation</em>

6.96×10⁵ Km

<em>b =In  expanded notation</em>

0.00019 mm

Explanation:

Given data:

Radius of sun = 696000 Km

size of bacterial cell = 1.9 ×10⁻⁴ mm

Radius of sun in scientific notation = ?

Size of bacterial cell in expanded notation = ?

Solution:

Radius of sun:

696000 Km

<em>In scientific notation</em>

6.96×10⁵ Km

Size of bacterial cell:

1.9 ×10⁻⁴ mm

<em>In  expanded notation</em>

1.9/ 10000 = 0.00019 mm

8 0
3 years ago
In printed form, the Oxford English Dictionary __________________.
inna [77]
Will i thank <span>consists of many volumes
hope this help!!!!!!!!</span>
3 0
3 years ago
Which units are used to measure both velocity and speed? Select three options
Ede4ka [16]

Answer and Explanation:

The options aren't listed in your question, but here are some units that are regularly and normally used (in the classroom and in the outside world):

(The SI unit of distance and displacement is the meter. The SI unit of time is the second.)

<u>Meters per Second (m/s)</u>

kilometers per hour (km/hr)

kilometers per second (km/sec)

To find the average speed, you do distance divided by time.

To find the average velocity, you do the final position minus the initial position, divided by the final time minus the initial time.

<em><u>#teamtrees #PAW (Plant And Water)</u></em>

<em><u></u></em>

<em><u>I hope this helps!</u></em>

8 0
3 years ago
Unlock all of them<br> pls pls pls pls pls pls pls pls pls pls pls pls
ladessa [460]
What do you mean by unlock all of them? Please explain
7 0
3 years ago
If a substance melts at 20oC, what is its freezing point?
shutvik [7]

Answer:

It is difficult, if not impossible, to heat a solid above its melting point because the heat that ... in a solid are packed in a regular structure that is characteristic of that particular substance.

<h3>#carryONlearning </h3>

4 0
3 years ago
Other questions:
  • Why do some scientists prefer to express concentrations of water contaminants in the units ppm and ppb rather than molarity?
    13·1 answer
  • A 50 kg object _____.
    15·1 answer
  • Which of the following is an example of land used as a protected area
    9·1 answer
  • You plan to separate a polar and a non-polar compound using normal phase column chromatography technique. Methylene chloride (CH
    14·1 answer
  • Is it possible to change the strength of an acid? Explain how you would do this.
    5·1 answer
  • Which of the following results in the release of nuclear energy?
    12·2 answers
  • As you move from left to right within a period (row), what is the pattern?
    11·1 answer
  • A tank of nitrogen has a volume of 14.0 L and a pressure of 1 atm. Find the volume of the nitrogen when its pressure is changed
    5·1 answer
  • If two kids kick the ball at the same time what is the motion on the ball will do?​
    7·1 answer
  • ((Write any one principle of Permaculture.​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!