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
const2013 [10]
2 years ago
5

How many atoms are there in 0.028 grams of iron metal? 12:50 ✓

Chemistry
1 answer:
labwork [276]2 years ago
3 0

Answer:

30100000000000000000 atoms

Explanation:

Ar of Fe : 56

0.028/56 = 0.0005 moles of Fe

0.0005 * 6.02 * 10^23(Avagardro's law of constant)

= 3.01*10^20 atoms

You might be interested in
if the gas pressure exerted by a gas at 45 degrees celsius in a volume of 1.944 ATM, how many moles of gas are present?​
Firdavs [7]
If the.pressure exerted by a gas at [math]25^{\circ} \mathrm{C}[/math] in a volume of 0.044 L is 3.81 atm, how many moles of gas are present
8 0
3 years ago
How is the electron cloud model different from Bohr's atomic model?
Vesnalui [34]

Answer:

While Bohr's atomic model hypothesizes that electrons move in particular energy levels around the nucleus, the electron cloud model suggests that electrons move in an unpredictable pattern but are more likely to be in certain regions than others.

5 0
3 years ago
Which element in Group 18 of the Periodic Table has the highest lonization energy?
Kruka [31]

all the elements in group 18 are Nobel gases or inert gases . all the elements such as neon , helium, argon etc. ,their outermost shell is completely filled . The noble gases have the largest ionization energies, reflecting their chemical inertness

4 0
3 years ago
What happens when energy is removed from liquid water
mariarad [96]

Answer:

When energy is removed in liquid water then it will solidify since heat is given off by the system to its surrounding. It is an exothermic process where the enthalpy decreases since heat is taken off. So liquid water becomes ice in an exothermic process.

Explanation:

8 0
3 years ago
A combustion reaction will always be associated with a change in entropy that will be:________.
Alex Ar [27]

Answer:

Option (A) : Positive

Explanation:

A combustion reaction will always be associated with a change in entropy that is Positive due to the gaseous products released. Hence, there is a large positive entropy change.

8 0
3 years ago
Other questions:
  • 10. The density of aluminum is 2.7 g/cm². A 27g piece of aluminum will have<br> what volume?
    8·1 answer
  • Can I+ (the iodine cation) becalled a Lewis base?<br> Fullyexlplain your answer.
    14·1 answer
  • The Reynolds number, Re, is a dimensionless number used to characterize different flow regimes in a fluid. The Reynolds number c
    11·1 answer
  • A welding torch produces a flame by burning acetylene fuel in the presence of oxygen the energy released from the acetylene fuel
    7·2 answers
  • Which phrase describes the decay modes and the half-lives of K-37 and K-42?
    12·2 answers
  • Which is true about models in science?
    15·2 answers
  • Is there a relationship between the number of black boxes and any of the water pumps
    14·1 answer
  • How many moles of water are needed to produce 56.8 g C2H2?
    11·1 answer
  • Where my Todoroki fans at?
    11·1 answer
  • I need help question 13
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!