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
erastovalidia [21]
4 years ago
7

Calculate the mass, in grams, of cucl2 (mw = 134.452 g/mol) required to prepare 250.0 ml of a 6.11 % w/v cu2 (mw = 63.546 g/mol)

solution.
Chemistry
1 answer:
Sever21 [200]4 years ago
6 0

6.11% w/v of Cu2+ implies that 6.11 g of Cu2+ is present in 100 ml of the solution

therefore,  250 ml of the solution would have: 250 ml * 6.11 g/100 ml = 15.275 g

# moles of Cu2+ = 15.275 g/63.546 g mole-1 = 0.2404 moles

1 mole of CuCl2 contain 1 mole of Cu2+ ion

Hence, 0.2404 moles of Cu2+ would correspond to 0.2404 moles of CuCl2

Molar mass of CuCl2 = 134.452 g/mole

The mass of CuCl2 required = 0.2404 moles * 134.452 g/mole = 32.32 grams

You might be interested in
Use at least three complete sentences to explain how global wind patterns such as the prevailing westerlies in the northern hemi
Pavlova-9 [17]

Answer:

If the Earth did not rotate on its axis, the atmosphere would only circulate between the poles and the equator in a simple back-and-forth pattern.

Hope this helped you! <3

3 0
3 years ago
Food in the stomach is broken down by powerful acids and turned into?
zheka24 [161]
<span>In this particular item, we are to determine how we call the acidic fluid-like substance that is formed after the food in the stomach is broken down by a powerful acid. The answer to this question is CHYME. The powerful acid that is referred in this item is more specifically gastric juices. </span>
4 0
4 years ago
Read 2 more answers
A solution is made by dissolving 3.8 moles of sodium chloride (NaCl) in 185 grams of water. If the molal boiling point constant
S_A_V [24]

The molality of the solution can be defined as moles of solute per kilogram of solvent.

Molality=3.8 moles/0.185 kg

=20.54 molal

The change in the temperature can be calculated as the product of boiling point constant and molality.

ΔTb=Kb×m=0.51 °C/m×20.54 m=10.47 °C.

The boiling point of the solution will be = 100 °C + 10.47 °C

=110.47 °C

3 0
3 years ago
What is the difference between a compound and a mixture?
Artyom0805 [142]

Answer:

Compound are substances which can be formed by chemically combining two or more elements. Mixtures are substances that are formed by physically mixing two or more substances. Compounds can be of three types, which are: covalent compounds, metallic compounds and ionic compounds.

3 0
3 years ago
Read 2 more answers
Can someone please help me with this?
gladu [14]

Answer:

Ball 2

Explanation:

the ball is falling and when it hits the ground it will bounce back up creating potential enery

4 0
3 years ago
Read 2 more answers
Other questions:
  • Which of the following statements is true?
    5·1 answer
  • In a chemical formula what number indiates the rtio of atoms in the compound
    15·1 answer
  • Which acid is the best choice to create a buffer with ph= 3.19?
    9·1 answer
  • How many moles are there in a 2.00 kg bottle of water?
    7·1 answer
  • Sam prepares a solution of sodium chloride with a concentration of 8 g/dm³. If he only used 2g of sodium chloride, what volume o
    8·1 answer
  • what type of substance would salt water be classified as?select all that apply.a.heterogeneous mixtureb.homogeneous mixturec.col
    12·1 answer
  • Letter D represents an energy level that holds electrons, what is another name for that ring, or energy level?
    7·1 answer
  • Plz help Which is an example of an abiotic factor interacting with a biotic factor in an ecosystem?
    6·1 answer
  • I need help please &lt;33
    14·1 answer
  • In a single replacement reaction, the chloride ion in NaCl can be replaced
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!