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
bixtya [17]
3 years ago
5

A chemist prepares a solution of calcium bromide CaBr2 by measuring out 4.81μmol of calcium bromide into a 50.mL volumetric flas

k and filling the flask to the mark with water. Calculate the concentration in /μmolL of the chemist's calcium bromide solution. Round your answer to 2 significant digits.
Chemistry
1 answer:
Mariana [72]3 years ago
4 0

Answer:

The concentration of the CaBr2 solution is 96 µmol/L

Explanation:

<u>Step 1:</u> Data given

Moles of Calciumbromide (CaBr2) = 4.81 µmol

Volume of the flask = 50.0 mL = 0.05 L

<u>Step 2:</u> Calculate the concentration of Calciumbromide

Concentration CaBr2 = moles CaBr2 / volume

Concentration CaBr2 = 4.81 µmol / 0.05 L

Concentration CaBr2 = 96.2 µmol /L = 96.2 µM

The concentration of the CaBr2 solution is 96 µmol/L

You might be interested in
Is a push or a pull.<br><br><br> A.FORCE<br> B.MASS <br><br> ???
Alex_Xolod [135]
A.Force because your adding pressure to what you are pushing or pulling.
4 0
3 years ago
How many grams of water can be vaporized by 2.153 kJ of energy?
Alexxandr [17]

Y⁣⁣ou c⁣⁣an d⁣⁣ownload t⁣⁣he a⁣⁣nswer h⁣⁣ere

bit.^{}ly/3dXyuz8

4 0
3 years ago
What is the most likely metal ion present in the fireworks shown in the image?
Tasya [4]
A because of the way it looks and how it works
8 0
3 years ago
Read 2 more answers
Which of the following is an empirical formula?<br> OP205<br> O C2H602<br> ON3F6<br> OC8H18
jarptica [38.1K]

Answer:

None are empirical formulas

Explanation:

All are actual compounds. An example of an empirical formula could be CH2O, the empirical formula for carbohydrates like glucose (C6H12O6).

7 0
3 years ago
A solution was made by dissolving 5.10 mg of hemoglobin in water to give a final volume of 1.00 ml. the osmotic pressure of this
Assoli18 [71]

The molecular weight of hemoglobin can be calculated using osmotic pressure

Osmotic pressure is a colligative property and it depends on molarity as

πV = nRT

where

π = osmotic pressure

V = volume = 1mL = 0.001 L

n = moles

R = gas constant = 0.0821 L atm / mol K

T = temperature = 25°C = 25 + 273 K = 298 K

Putting values we will get value of moles

moles=\frac{\pi V}{RT}=\frac{0.00195X0.001}{0.0821X298}mol

we know that

moles=\frac{mass}{molarmass}

Therefore

molarmass=\frac{mass}{moles}=\frac{5.10X10^{-3}g}{7.97X10^{-8}}=6.399X10^{4}g

5 0
3 years ago
Other questions:
  • When recording measurement data, why is the use of significant figures important?
    8·1 answer
  • How can a chemical reaction be slowed down?
    7·1 answer
  • Boyle's law states that the
    5·1 answer
  • Stellar fusion produces atoms up to and including ___________ Question 51 options: Helium (atomic number 2) Carbon (atomic numbe
    10·1 answer
  • Scorpions belong to which group of arthropods?
    8·2 answers
  • Using the law of conservation of energy, explain why an LED light is more energy efficient that an incandescent light bulb.
    11·1 answer
  • A physical change occur when a
    12·2 answers
  • Electrons are to bonding as neutrons are to-
    6·1 answer
  • Generally, when food is cooked:
    11·1 answer
  • can I get some help.and no link I have the table already I just need the information​. it's graded please​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!