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
bagirrra123 [75]
2 years ago
13

How many moles of Boron (B) are in 5.03 x 1024 B atoms?

Chemistry
1 answer:
goldfiish [28.3K]2 years ago
3 0

Hey there!:

Number of moles =   ( number of atoms / 6.023*10²³ atoms )

given number of atoms = 5.03*10²⁴

Therefore:

Number of moles B = 5.03*10²⁴ / 6.023*10²³

Number of moles B = 8.35 moles

Hope that helps!


You might be interested in
when 6.25 grams of pure iron are allowed to react with oxygen , a black oxide forms. if the product weighs 8.15 g, what is the e
erik [133]
We are given with the mass of  pure iron that reacts with oxygen to form an oxide which has a given mass as well. the mass of oxygen reacted is 8.15-6.25 g or 1.9 grams. THen we convert the mass of the reactants to moles. Iron is equal to 0.1119 moles and oxygen is equal to 0.1188. We divide each number to the less amount. Hence iron is 1 and oxygen is approx 1. The empirical formula hence is FeO or ferrous oxide or Iron (II) oxide.
5 0
2 years ago
How many molecules are in 777.7 grams of water?
Alisiya [41]

to have the closest number rounded up

7 0
2 years ago
An atom whose valence electrons conform to the octet rule is:
Readme [11.4K]

Answer: D. less likely to form any bond

Explanation:

3 0
3 years ago
The universe displays _____.
Orlov [11]

Answer:

B) the full spectrum of light

Explanation:

4 0
3 years ago
Read 2 more answers
This week and last, we've be talking a lot about liquid properties. For me, these always tie in to cooking. Often times when we
-Dominant- [34]

Answer:

It makes the pasta to get hot faster and boil quicker.

Explanation:

Adding salt to water actually raises the boiling point of the water, due to a phenomenon called boiling point elevation. Essentially, adding any non-volatile solute such as salt to a liquid causes a decrease in the liquid’s vapour pressure. A liquid boils when the vapour pressure above it equals atmospheric pressure, so a lower vapour pressure means you need a higher temperature to boil the water. The reason salt makes water boil faster has to do with specific heat capacities, or the energy it takes to raise the temperature of a substance. Salt ions dissolved in water bind to water molecules, holding them stable and making it harder for them to move around. As a result, the non-salt bound water molecules receive more of the energy provided by the stove, and therefore they get hot faster and boil quicker.

6 0
3 years ago
Read 2 more answers
Other questions:
  • Please help
    13·2 answers
  • What is the concentration of O2(g), in parts per million, in a solution that contains 0.008 gram of O2(g) dissolved in 1000. gra
    12·2 answers
  • Explain how your brain and sensory organs get information from the outside world
    15·1 answer
  • Name the following ionic compounds, keeping in mind that a transition metal cation must include its charge. ____________________
    10·1 answer
  • The illumination of an object by a light source is directly proportional to the strength of the source and inversely proportiona
    7·1 answer
  • Calculate the volume of 12.0 g of helium at 100°c and 1.2 atm
    15·1 answer
  • Please help!! A lot of points!!
    10·1 answer
  • The atomic mass of a atom (in amu) is equal to
    10·2 answers
  • What mass of HBO2 is produced from the<br> combustion of 139.5 g of B2H6?<br> Answer in units of g.
    8·1 answer
  • Need helpppp please
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!