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
guajiro [1.7K]
3 years ago
11

How many moles are in 23.5 g of H20?​

Chemistry
1 answer:
Lorico [155]3 years ago
7 0

Answer:

2.63g

This means that every mole of water molecules will contain 2 moles of hydrogen and 1 mole of oxygen atoms.

To find the percent composition of hydrogen in water, use the molar mass of water and that of hydrogen

2×1.00794g/mol18.0153g/mol×100=11.19%

This means that every 100 g of water will contain a total of 11.19 g of hydrogen. Since your sample has a mass of 23.5 g, it follows that it will contain

23.5g water⋅11.19 g H100g water=2.63 g H

You might be interested in
Calculate the pressure exerted by 1.0 mol of C6H6behaving as a)a perfect gas and b) a van der Waals gas when it is confined unde
Sholpan [36]

Answer:

The detailed calculation is shown in the attached file.

last condition (1000 K in 150.000 dm3) will have the least deviations and it is the condition where real gas will behave as ideal gases

Explanation:

Real gas behave more ideally or they tend towards ideality when there is the least deviation, or their inter-molecular forces between their molecules are mainly responsible for their deviations as such gases with the strongest intermolecular forces shows the strongest deviations. As such, when their is an increase in temperature and volume and a decrease in pressure, real gas tends towards ideal gas in this case.

From the three conditions given, it is obvious that the last condition(1000 K in 150.000 dm3)  will have the least deviations.

6 0
4 years ago
You need 1.50 moles of ammonia (nh3) for a reaction at stp. what volume of ammonia must you measure? also,how many molecules of
professor190 [17]
<span>what volume of ammonia must you measure? 

1.50 moles NH3 ( 22.4 L / 1 mole ) = 33.6 L NH3 should be measured

</span><span>how many molecules of nacl are in 23.40 grams nacl

23.40 g NaCl ( 1 mol / 58.44 g) (6.022 x 10^23 molecules / 1 mol ) = 2.4113 x 10^23 molecules

Hope these answer the questions. Have a nice day.</span>
4 0
4 years ago
How many moles are in 2.1 x 10^{24} molecules SiO4
lozanna [386]

Answer: 3.5 moles

Explanation:

Based on Avogadro's law:

1 mole of any substance has 6.02 x 10^23 molecules

So, 1 mole of SiO4 = 6.02 x 10^23 molecules

Zmoles of SiO4 = 2.1 x 10^{24} molecules

To get the value of Z, cross multiply:

(2.1 x 10^{24} molecules x 1mole) = (6.02 x 10^23 molecules x Z moles)

2.1 x 10^{24} molecules = (6.02 x 10^23 x Z)

Z = (2.1 x 10^{24}) ➗ (6.02 x 10^23)

Z = 3.5 moles

Thus, there are 3.5 moles of SiO4.

4 0
3 years ago
How many moles of oxygen atoms are on 4.7x1022 molecules of carbon dioxide?
scoundrel [369]

Answer:

0.076

Explanation:

n=4.7×10^22/6.022×10^23

n=0.076mol

3 0
4 years ago
The first energy level which has f orbitals to fill is <br> A. 3 <br> B.4 <br> C.5 <br> D.2
LenaWriter [7]

Answer:

the answer is 4 because 3 just have d orbitals

5 0
3 years ago
Other questions:
  • Buckminsterfullerene is an allotrope of carbon that is found in:
    14·1 answer
  • Example when materials are prepared as fluids so they can be moved more easily
    6·2 answers
  • Below is a list of terms used in characterizing solutions. Enter the correct term for each sentence. Note that not all of the te
    15·1 answer
  • Calculate the voltage of the cell.
    8·1 answer
  • Solid potassium fluoride decomposes into fluorine gas and solid potassium .
    6·1 answer
  • Which best describes a difference between prokaryotic and eukaryotic cells
    11·1 answer
  • In pea plants the trait for green sea pods ( G) is dominant over the trait for yellow seed pods (g) which cross will produce the
    14·1 answer
  • Calculate the volume in milliliters of a 1.4M sodium carbonate solution that contains 100.g of sodium carbonate Na2CO3. Round yo
    12·1 answer
  • Which of the following methods would best model how the mountains formed?
    14·1 answer
  • What is the mass (g) of 3.20 x 10 24 atoms of Silver?<br>​
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!