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
Mice21 [21]
3 years ago
15

How many atoms are in 20.6 moles of curium

Chemistry
1 answer:
Harman [31]3 years ago
4 0

Answer: 1.24 × 10^25

Explanation:

\frac{20.6 moles}{1} × \frac{6.022 * 10^{24} }{1 Mole}

Using our knowledge in unit conversions, we know the mole units cancel each other out and all there's left is the atom unit. From here we can multiply the fractions and eventually we end with the number 124.0532 × 10^23

According to the scientific notation rules, the number to the left of the decimal cannot exceed 10 so we have to move the decimal to the left two spaces. With this change, we also have to change the exponent of the 10. Because we moved the decimal point two spaces to the left, that means we have 10^25.

You might be interested in
16. The concentration of a solution of potassium hydroxide is determined by titration with nitric
____ [38]

Answer:

M_{base}=0.709M

Explanation:

Hello,

In this case, since the reaction between potassium hydroxide and nitric acid is:

KOH+HNO_3\rightarrow KNO_3+H_2O

We can see a 1:1 mole ratio between the acid and base, therefore, for the titration analysis, we find the following equality at the equivalence point:

n_{acid}=n_{base}

That in terms of molarities and volumes is:

M_{acid}V_{acid}=M_{base}V_{base}

Thus, solving the molarity of the base (KOH), we obtain:

M_{base}=\frac{M_{acid}V_{acid}}{V_{base}} =\frac{0.498M*42.7mL}{30.0mL}\\ \\M_{base}=0.709M

Regards.

3 0
3 years ago
\hy carbon used to reduce the oxide of aluminium to get the metal?
irga5000 [103]

___________________________________________________

Carbon is used to reduce the oxide of aluminium to get the metal, in case condensation happens during this process.

___________________________________________________

Hope this helps!

7 0
3 years ago
Which of the following has the largest radius k,Na+,Na,k+
Galina-37 [17]

Answer: k

Explanation: a p e x

8 0
2 years ago
Read 2 more answers
What would happen to a animal cell if it had n\an lysosome?
pantera1 [17]
Honestly I don't know
4 0
3 years ago
How many moles in 58 grams of CO3 ?
Romashka [77]

Answer:

60.0089

Explanation:

7 0
2 years ago
Other questions:
  • Write a balanced equation for the reaction of ca with hcl
    8·1 answer
  • A mineral must be_______ rather than organic. Organic materials are formed from_______ things. Minerals must be made from materi
    9·1 answer
  • What happens after you leave oil and vinegar in a glass for a few minutes?
    8·1 answer
  • Why do you believe knowing how elements and compounds react together is essential in everyday matters?
    10·2 answers
  • A green shirt looks green to you because
    8·1 answer
  • Is pepperoni pizza a compound or mixture?​
    11·2 answers
  • Rank the following compounds from highest boiling to lowest boiling. To rank items as equivalent, overlap them.
    8·1 answer
  • PLZ HELP ASAP WILL
    14·1 answer
  • Write down your understanding of plate tectonics.
    9·1 answer
  • Study the reactions.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!