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
MaRussiya [10]
3 years ago
12

How many molecules are in 1.95 moles of water?

Chemistry
2 answers:
Licemer1 [7]3 years ago
8 0

Answer: 1.1739*10²⁴ molecules

Explanation:

Using Avogadro's constant,

1 mole of any substance = 6.02*10²³ molecule/atom or particles.

Therefore 1.95 mole of water contains;

1.95 * 6.024*10²³ molecules = 1.1739*10²⁴ molecules.

OLEGan [10]3 years ago
3 0
Water has a molar mass of 18.015 g/mol . This means that one mole of water molecules has a mass of 18.015 g . So, to sum this up, 6.022⋅1023 molecules<span> of water will amount to 1 mole of water, which in turn will have a mass of 18.015 g . 2.7144moles H2O ⋅</span>6.022<span>⋅1023molec.1mole H2O =1.635⋅1024molec.</span>
You might be interested in
Element J is 1s 2s 2p 3s . (i) How many unpaired electrons does J have?
Mama L [17]

Answer:6

Explanation:

3+3

7 0
3 years ago
Question 5 Multiple Choice Worth 4 points)
777dan777 [17]

Answer:

This cannot be determined without knowing the actual mass of the objects.

Explanation:

its like trying to compare the letter A and letter B

3 0
3 years ago
Do all waves need a material to travel through? HELPPPP
Natasha2012 [34]
No. 
Electromagnetic waves can travel without a medium.

hope this helps and have a great day :)



7 0
3 years ago
The hydrogen-line emission spectrum includes a line at a wavelength of 434 nm. What is the energy of this radiation? (h= 6.626 x
Andrews [41]
Wavelength = 434nm = 434 x 10⁻⁹m
planck's constant = <span>h= 6.626 x 10 ⁻³⁴ J
E =?
by using the formula;
E = hc /</span>λ
value for c is 3 x 10⁸ m/s
E = (6.626 x 10 ⁻³⁴ J)(3 x 10⁸ m/s) / 434 x 10⁻⁹m
E = 1.9878 x 10⁻²⁵ / 434 x 10⁻⁹m
E = 4.58 x 10⁻¹⁹ joules

6 0
3 years ago
What is the number of the group that has the most reactive nonmetals (give number and letter- Ex 1A, 2A, etc.)?​
Kryger [21]

Answer:

Group 7A

Explanation:

The group 7A elements consists of the most reactive non-metals on the periodic table.

This group is known as the group of halogens. They consist of element fluorine, chlorine, bromine, iodine and astatine.

  • The elements in this group have the highest electronegativity values.
  • They have 7 valence electrons and requires just one electron to complete their octets.
  • This way, they are highly reactive in their search for that single electron.
3 0
3 years ago
Other questions:
  • (True or False) It would be most appropriate to use the noble gas core [He] when writing the shorthand electron configuration fo
    12·2 answers
  • Nombre del siguiente compuesto <br> CH³-(CH³)³-OH
    7·2 answers
  • 12. What is the mass, if the density is 2 and the volume is 6? *<br> 3<br> O 12<br> O 15
    11·1 answer
  • 1. In class, students learned that a cart will move when a force of 50 N
    11·1 answer
  • An irregular shaped sample of aluminum is put on a balance and found
    15·1 answer
  • How many moles of MgS2O3 are in 205 g of the compound?
    10·2 answers
  • A solvent has a freezing point of 10°C. What is the most likely freezing point if 5 grams of Salt is mixed with the solvent? (AK
    7·2 answers
  • D= Sx2
    6·1 answer
  • Calcular el numero de gramos de un mol de metano
    15·1 answer
  • How many electrons are in the element
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!