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
aleksley [76]
3 years ago
12

How many moles are in 6.777 x 1023 atoms of CO2. Watch your significant figures. Question 2 options: 1 atoms CO2 1.125 moles CO2

1.13 moles 1.13 atoms CO2
Chemistry
1 answer:
Archy [21]3 years ago
6 0

Answer:

1.13moles

Explanation:

Given parameters:

Number of atoms  = 6.777 x 10²³ atoms

Unknown:

Number of moles  = ?

Solution:

A mole of a substance contains the avogadro's number of particles

       6.02  x  10²³ particles   = 1 mole

      6.777 x 10²³ atoms will contain \frac{ 6.777 x 10^{23}  }{6.02 x 10^{23} }   = 1.13moles

You might be interested in
Vitamin D has a percent composition of 42.98% C, and 57.02% H. Its molecular
Alex73 [517]

Answer:

Dont use alot of points

Explanation:

people scam like me and ay the wrong answer and get the points :|

3 0
3 years ago
Plz help me with these electron dot structures!
abruzzese [7]

Answer:

Explanation:

chlorine

flourobenzen

sulfur dioxide

OH

6 0
3 years ago
Calcium hydroxide is a strong base but is not very soluble ( Ksp = 5.02 X 10-6 ). What is the pH of a saturated solution of Ca(O
Misha Larkins [42]

Answer : The pH of a saturated solution is, 12.33

Explanation : Given,

K_{sp} = 5.02\times 10^{-6}

First we have to calculate the solubility of OH^- ion.

The balanced equilibrium reaction will be:

Ca(OH)_2\rightleftharpoons Ca^{2+}+2OH^-

Let the solubility will be, 's'.

The concentration of Ca^{2+} ion = s

The concentration of OH^- ion = 2s

The expression for solubility constant for this reaction will be,

K_{sp}=[Ca^{2+}][OH^-]^2

Let the solubility will be, 's'

K_{sp}=(s)\times (2s)^2

K_{sp}=(4s)^3

Now put the value of K_[sp} in this expression, we get the solubility.

5.02\times 10^{-6}=(4s)^3

s=1.079\times 10^{-2}M

The concentration of Ca^{2+} ion = s = 1.079\times 10^{-2}M

The concentration of OH^- ion = 2s = 2\times (1.079\times 10^{-2}M)=2.158\times 10^{-2}M

First we have to calculate the pOH.

pOH=-\log [OH^-]

pOH=-\log (2.158\times 10^{-2})

pOH=1.67

Now we have to calculate the pH.

pH+pOH=14\\\\pH=14-pOH\\\\pH=14-1.67=12.33

Therefore, the pH of a saturated solution is, 12.33

7 0
3 years ago
127) Thirty-six colonies grew in nutrient agar from 1.0 ml of undiluted sample in a standard plate count. How many cells were in
SIZIF [17.4K]

Answer:

36

Explanation:

Since the sample was undiluted the number of colonies is the number that grew on the nutrient agar which is 36 colonies. If it was diluted for example let say 0.1 ml from a dilution in which 1 ml of the sample was added to 9 ml of water, and it grew  colonies then  0.1 ml  yielded  6 colonies, 1 ml of the diluted sample will yield 60 colonies and 10 ml will have 600 colonies and therefore the 1 ml undiluted sample will have 600 colonies.

6 0
3 years ago
Name any two polymers which are formed by the process of condensation polymerization.
ehidna [41]

Polyester and polyamide would be two synthetic polymers, created by condensation reaction.

5 0
3 years ago
Other questions:
  • In which group of teh modern periodic table are there very reactive metals and very reactive non metals?​
    8·1 answer
  • Wat is a redox reaction
    8·1 answer
  • How does Controlled fires help prevent real forest fires?
    15·1 answer
  • CAN SOMEONE go through this with me pleaseeeSTEP BY STEP AND TELL ME THE ANSWERS!!!thx
    10·1 answer
  • Identify the Lewis acid and Lewis base from among the reactants in each of the following equations. Match the words in the left
    15·1 answer
  • Mario wants to split a beam of white light into different colors. Which tool will work best?
    10·1 answer
  • Sarah is in her chemistry lab doing an experiment. When she goes to take the mass of the chemical she is working with, she disco
    15·1 answer
  • Which equation is balanced in an acidic solution?
    9·1 answer
  • What is the difference between 24-karat gold and gold used for normal jewelry?
    15·2 answers
  • The molar mass of K2S is<br> 110.27 g/mol. What is the mass<br> of 2.75 moles K2S?<br> [?] g K₂S
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!