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
Leviafan [203]
3 years ago
10

What is the mass of 7 x 10^28 atoms of Fe?

Chemistry
1 answer:
Nostrana [21]3 years ago
4 0

Answer:

6 x 10⁶ g Fe

Explanation:

Step 1: Set up dimensional analysis

7 x 10²⁸ atoms Fe (1 mol Fe/6.02 x 10²³ atoms Fe)(55.85 g Fe/1 mol Fe)

Step 2: Multiply, divide, and cancel out units

atoms Fe and atoms Fe cancel out.

mol Fe and mol Fe cancel out.

We should be left with g Fe.

7 x 10²⁸/6.02 x 10²³ = 116279 mol Fe

116279(55.85) = 6.49 x 10⁶ g Fe

Step 3: Sig figs

There is only 1 sig fig in this problem.

6.49 x 10⁶ g Fe ≈ 6 x 10⁶ g Fe

You might be interested in
The atoms, molecules, or compounds present at the start of a chemical reaction that participate in the reaction.
Art [367]
For the first one the answer is B. and the second one is D.
4 0
3 years ago
Read 2 more answers
Three metal spoons are on table. They are at room temperature. If the three spoons touch.
Alex
If the spoons touch, no heat will flow among the spoons because they are already in thermal equilibrium with each other. This is hinted by the statement "they are at room temperature" which means they all have the same temperature. Heat only flows when there is a difference in temperature.<span>
The answer will be </span><span>C. No heat will flow among the spoons
</span><span>
®PLEASE MARK AS BRAINLIEST TO HELP ME LEVEL UP®</span>
5 0
3 years ago
Read 2 more answers
Help please. Which mass of urea, CO(NH2)2, contains the same mass of nitrogen as 101.1 g of potassium nitrate?
Masja [62]
Did u mean mass of potassium nitrate or the mass of nitrogen in potassium nitrate

6 0
3 years ago
Why are hydrogen bonds important for the properties of water?
zavuch27 [327]
Water has the special type of attraction called Hydrogen bonding.  The bonds between the Hydrogen and the Oxygen in each water molecule make a super dipole because the Oxygen atom is way more electronegative than the hydrogen atom.  These OH bonds can then be attracted to other H2O molecules.  If you have ever poured water up to the brim and there is  little bit of water that is poking above the top, hydrogen bonding keeps those water molecules from spilling
5 0
3 years ago
How many grams of h20 are produced if 75g of CO2 are produced. (Work Shown with the answer would be preferred.)
Agata [3.3K]
2:7 ratio of ethane to O2 = 15:x 9solve for x)
x=52.5 mol O2
5 0
2 years ago
Other questions:
  • Which option is a balanced equation for cellular respiration?
    13·2 answers
  • How did the discoveries of scandium (sc) and germanium (ge) affect mendeleevâs work?
    10·2 answers
  • INSIG
    6·1 answer
  • An acid with a p K a of 8.0 is present in a solution with a pH of 6.0. What is the ratio of the protonated to the deprotonated f
    9·1 answer
  • Which type of clouds are feathery,high in the sky,and are made mostly of ice crystals?
    7·2 answers
  • Use the equation:
    12·1 answer
  • Based on its location on the periodic table, how many electrons does oxygen have in its
    11·1 answer
  • Write the balanced chemical equation for the reaction of glucose (C6,H12,O6) with oxygen gas to produce carbon dioxide gas
    11·1 answer
  • Why increasing the temperature of a gas would increase the volume of its container in gas law?
    6·1 answer
  • Need help ASAP <br> Ahsb
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!