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
aivan3 [116]
3 years ago
13

How many moles are there in 3.612 x 1024 formula units of Na2SO4?

Chemistry
1 answer:
vitfil [10]3 years ago
5 0

Answer:

<h3>Theanswer is 6 moles</h3>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

n =  \frac{N}{L}  \\

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

n =  \frac{3.612 \times  {10}^{24} }{6.02 \times  {10}^{23} }  \\

We have the final answer as

<h3>6 moles</h3>

Hope this helps you

You might be interested in
Compared to an atom of C-14, an atom of C-12 has a lesser
AVprozaik [17]

Answer:

mass number

Explanation:

because the mass

  1. number is the number of protons plus the number of neutron and the number of proton in an elements is always the same , therefore and atom of C-14 has greater mass number
6 0
3 years ago
While exploring a coal mine, scientists found plant fossils in the ceiling of the mine which had been preserved by an earthquake
ale4655 [162]

Answer:

11552.45 years

Explanation:

Given that:

Half life = 5730 years

t_{1/2}=\frac{\ln2}{k}

Where, k is rate constant

So,  

k=\frac{\ln2}{t_{1/2}}

k=\frac{\ln2}{5730}\ years^{-1}

The rate constant, k = 0.00012 years⁻¹

Using integrated rate law for first order kinetics as:

[A_t]=[A_0]e^{-kt}

Where,  

[A_t] is the concentration at time t

[A_0] is the initial concentration

Given that:

The rate constant, k = 0.00012 years⁻¹

Initial concentration [A_0] = 160.0 counts/min

Final concentration [A_t] = 40.0 counts/min

Time = ?

Applying in the above equation, we get that:-

40.0=160.0e^{-0.00012\times t}

e^{-0.00012t}=\frac{1}{4}

-0.00012t=\ln \left(\frac{1}{4}\right)

t=11552.45\ years

7 0
3 years ago
Merits of modern periodic table?​
ANEK [815]

Answer:

<h3>Merits of modern periodic table:</h3>
  • The wrong position of some elements like argon, potassium, cobalt and nickel due to atomic weights have been solved by arranging the elements in the order of increasing atomic number without changing their own places.
  • The isotopes of some element have the same atomic numbers. Therefore, they find the same position in periodic table.
  • It separates metals from non-metals.
  • The groups of the table are divided into sub groups A and B due to their dissimilar properties which make the study of elements specific and easier.
  • The representative and transition elements have been separated.

Hope this helps...

Good luck on your assignment...

6 0
3 years ago
if five gases contained in a cylinder each exert a pressure of 1.0 atm what is the total pressure exerted by the gases
UNO [17]

Answer:5.0 atm

Explanation:

See attached photo

6 0
2 years ago
Read 2 more answers
A 125g sample of a mixture of salt and sand contains 12% salt.
natka813 [3]
12 % salt is present in 125 g mixture of salt and sand.
Keep in mind that the total percentage is always 100 %
Therefore, if 12 % is the salt, remaining 88 % must be
sand.
a. The amount of mixture is 125 q. Here, 12 % of 125 is
12 * 125 / 100 = 15 g of salt is present in 125 g mixture.
b. The amount of sand can be calculated similarly, 88 %
of 125 g is 88 * 125 / 100 = 110 g of sand is present in
125 g mixture.
4 0
2 years ago
Other questions:
  • Which of the following is a nonmetallic mineral resource?. A. wood . B. iron . C. coal . D. aggregate
    11·2 answers
  • What role does the mantle play in the rock cycle?
    15·2 answers
  • Which pair consists of a molecular formula and its corresponding empirical formula?
    12·2 answers
  • Type one to two paragraphs describing the changes in potential and kinetic energy of the cart.
    6·2 answers
  • Hello, I need help with a CER about Why do so many earthquakes occur along the west coast of the United States?
    9·1 answer
  • In which of the following cases would recrystallization be favored over extraction when purifying a mixture of two solid compoun
    10·1 answer
  • 6. What is the producer
    15·2 answers
  • Light energy comes from
    5·2 answers
  • Write the products and balance the equation:<br><br> C4H7OH + O2 → CO2 +H2O
    5·1 answer
  • HELP IM HAVING A BREAKDOWN
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!