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
rjkz [21]
4 years ago
11

How many molecules are there in 840 grams of na2SO4

Chemistry
1 answer:
beks73 [17]4 years ago
4 0

Answer:

3.56x10^24 molecules

Explanation:

The following data were obtained from the question:

Mass of Na2SO4 = 840g

Molar Mass of Na2SO4 = (23 x2) + 32 + (16x4) =46 + 12 + 64 = 142g/mol

From Avogadro's hypothesis, 1mole of any substance contains 6.02x10^23 molecules. This also gives that 1mole of Na2SO4 contains 6.02x10^23 molecules.

If 1 mole (i.e 142g) contains 6.02x10^23 molecules,

Therefore, 840g of Na2SO4 will contain = (840 x 6.02x10^23)/142 = 3.56x10^24 molecules

You might be interested in
HELP ME ILL MARK BRAINLIESTTTT PLSS ASAP
krok68 [10]

Answer:

I think w but I don't know

8 0
3 years ago
Read 2 more answers
List all the ways you can change oceanic crust into continental crust using the sliders.<br> IS
Lorico [155]

Answer:

By moving the thickness slide just a little bit to the right and just before the oceanic crust turns to continental crust, I can use either the temperature slider or the composition slider by moving either of them to the right until the oceanic crust turns to be continental crust.

Explanation:

8 0
3 years ago
The clouds of Venus consist mainly of ______. Group of answer choices carbon monoxide droplets of water vapor hydrogen and heliu
Zanzabum

Answer:

droplets of sulfuric acid

Explanation:

4 0
3 years ago
Atoms of which two elements have a combined total of 23 protons?
Alik [6]

Answer:

Sodium, Na, and magnesium, Mg

6 0
4 years ago
What is the mass of an object that has a density of 0.500 g/cm3 and a volume of 5.00 mL?
attashe74 [19]

Answer:

<h2>The answer is 2.5 g</h2>

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

<h3>mass = Density × volume</h3>

From the question

density = 0.5 g/cm³

1 mL = 1 cm³

5 mL = 5 cm³

volume = 5 cm³

The mass is

mass = 0.5 × 5

We have the final answer as

<h3>2.5 g</h3>

Hope this helps you

4 0
3 years ago
Other questions:
  • The following is known as the thermite reaction: 2Al(s)+Fe2O3(s)→Al2O3(s)+2Fe(s) This highly exothermic reaction is used for wel
    11·1 answer
  • The basic organizational feature of the periodic table of elements
    6·1 answer
  • What do non polar molecules have in common?
    12·1 answer
  • If mass increases what must happen to the force in order to achieve the same change in motion
    9·1 answer
  • A solution contains naphthalene (C10H8) dissolved in hexane (C6H14) at a concentration of 13.06% naphthalene by mass. Calculate
    14·1 answer
  • Which of the following has the shortest wavelength?
    9·2 answers
  • What functional group does the molecule below have?<br><br> *two leg spider looking molecule*
    13·1 answer
  • What element has 4 valence electrons and 3 orbital shells
    9·1 answer
  • Can someone define these for me
    10·1 answer
  • Please help!
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!