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
kobusy [5.1K]
3 years ago
9

I NEED HELP PLEASE, THANKS! :)

Chemistry
1 answer:
marin [14]3 years ago
6 0

Answer:

\large \boxed{1.447 \times 10^{23}\text{ molecules Cu(OH)}_{2 }}

Explanation:

1. Calculate the moles of copper(II) hydroxide

\text{Moles of Cu(OH)}_{2} = \text{23.45 g Cu(OH)}_{2} \times \dfrac{\text{1 mol Cu(OH)}_{2}}{\text{97.562 g Cu(OH)}_{2}} = \\\\\text{0.240 36 mol Cu(OH)}_{2}

2. Calculate the molecules of copper(II) hydroxide

\text{No. of molecules} = \text{0.240 36 mol Cu(OH)}_{2} \times \dfrac{6.022 \times 10^{23}\text{ molecules Cu(OH)}_{2}}{\text{1 mol Cu(OH)}_{2}}\\\\= 1.447 \times 10^{23}\text{ molecules Cu(OH)}_{2}\\\text{The sample contains $\large \boxed{\mathbf{1.447 \times 10^{23}}\textbf{ molecules Cu(OH)}_{\mathbf{2}}}$}

You might be interested in
The layering of eroded sediments is called:
Aleks [24]
4. the rock cycle is the layering of eroded sediments 
6 0
3 years ago
How many chlorine atoms are found in 8.3 moles of chlorine?
erik [133]

Answer:

5*10²⁴ chlorine atoms are found in 8.3 moles of chlorine.

Explanation:

Avogadro's Number or Avogadro's Constant is called the number of particles that make up a substance (usually atoms or molecules) and that can be found in the amount of one mole of said substance. Its value is 6.023*10²³ particles per mole. Avogadro's number represents a quantity without an associated physical dimension, so it is considered a pure number that allows describing a physical characteristic without an explicit dimension or unit of expression. Avogadro's number applies to any substance.

Then you can apply the following rule of three: if 1 mole of the compound contains 6.023 * 10²³ atoms, 8.3 moles of the compound how many atoms does it have?

amount of atoms=\frac{8.3 moles*6.023*10^{23}atoms }{1 mole}

amount of atoms≅ 5*10²⁴ atoms

<u><em>5*10²⁴ chlorine atoms are found in 8.3 moles of chlorine.</em></u>

4 0
3 years ago
Describe happens when you move any atom toward the positive nuclear charge.
bekas [8.4K]

Answer:

Across a period, effective nuclear charge increases as electron shielding remains constant. A higher effective nuclear charge causes greater attractions to the electrons, pulling the electron cloud closer to the nucleus which results in a smaller atomic radius. ... This results in a larger atomic radius.

Explanation:

Now lets d8

5 0
3 years ago
Help me outttttttttttt t t t. T t
Alla [95]

Answer:

the open bag allowed the gas from the reaction to escape

8 0
3 years ago
Describe what an alchemist does
Zielflug [23.3K]
Yes what he saiddddd
6 0
2 years ago
Other questions:
  • given the mass lost during the reaction when the alka seltzer is the limiting reagent and that the molar mass of carbon dioxide
    11·1 answer
  • A laboratory requires 2.0 L of a 1.5 M solution of hydrochloric acid (HCl), but the only available HCl is a 12.0 M stock solutio
    5·2 answers
  • For a successful TLC experiment, you need to pay attention to the details. From the list of instructions and tips below, select
    14·1 answer
  • What characteristic of an epic hero does this passage
    15·1 answer
  • q=mcΔT. Given this equation find the change in temperature. q = 600 J, m= 25.0 g, c= 0.897 J/g°C. What is ΔT?
    14·1 answer
  • Question 8 of 50
    7·2 answers
  • You are provided with a compound fertilizer, 40-15-10.Calculate the quantity of fertilizer to add to a one hectare field supply
    11·1 answer
  • sedimentary rocks that are formed from physical/chemical process within the earth are given the general name of
    9·2 answers
  • Does 4 have an infinate number of significant digits?
    13·1 answer
  • A stainless steel knife has a mass of 849 grams. It has a density of 7.86 g/cm³. What is the volume of the knife?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!