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
NeX [460]
2 years ago
14

For the reaction 2Fe + O2 → 2FeO, how many grams of iron oxide are produced from 42.4 mol of iron?

Mathematics
1 answer:
Butoxors [25]2 years ago
8 0

In the balanced reaction

2 Fe + O₂   →   2 FeO

2 moles of iron (Fe) react with 1 mole of molecular oxygen (O₂) to produce 2 moles of iron oxide (FeO). The ratio of Fe to FeO is 1-to-1, so if one starts with 42.4 mol of Fe, one will end up with the same amount of FeO, 42.4 mol.

Look up the molar mass of Fe and O:

• Fe = 55.845 g/mol

• O = 15.999 g/mol

Then the molar mass of FeO is approximately 71.835 g/mol, and so the mass of 42.4 mol of FeO is

(42.4 mol) × (71.835 g/mol) ≈ 3050 g

You might be interested in
HELP FASTTTT Which graph shows the solution to the system of linear inequalities ?
Mice21 [21]
Well, we do not see the lines clearly (if they are dotted (inequality) or solid (inequality or equal) ), but we'll come back to this.

y<x+1  can be simplified to be y<x if we ignore the constants, so the valid part is BELOW the line, since (y<)

x-4y <=4
again, ignore the constants and simplify to 
x-y<0 or
y>x   so the valid part is ABOVE the line (since y>)

There are two graphs that satisfy BOTH conditions, pink (slope=1) at the bottom, and blue (slope = 1/4) on top, i.e. first and third graph.

For the absolute inequality (y<x+1), the red line must be dotted.
For the <= condition, the blue line must be solid.

As we cannot see the lines clearly, you will make the choice between the first and third graphs according to the previous paragraph.

4 0
3 years ago
Read 2 more answers
2. Name the numerator and the denominator in each fraction.
marishachu [46]

Answer:

Step-by-step explanation:

a.11/12 =11 is numerator and 12 is denominator

b.7/512 =75 is numerator and 512 is denominator

c.12/10 = 12 is numerator and 10 is denominator

d0/78 = 0 is numerator and 78 is denominator

point to remember : In fraction,upper part is always numerator and down part is denominator.

6 0
2 years ago
The temperature was -6°F. It rose so that the temperature was 0°F. What integers represents the change in temperature.
Flauer [41]

Answer:

+6

Step-by-step explanation:

Just do 0 -(-6).

3 0
3 years ago
PLEASE HELP ASAP I WILL mark brilliant!
Brums [2.3K]
It was reflected vertically then flipped
8 0
3 years ago
Read 2 more answers
How do you solve 9 tenths minus 13 fiftenths
Elena L [17]

Answer:

0.04

Step-by-step explanation:

1. 9/10 = 0.9 and 13/15 = 0.86

2. Subtract 0.9 and 0.86

3. You should end up with 0.04

Remember when a number goes like 0.86666666666 to use 0.86 or if it has 0.86666666667 to use 0.87 because you would be simplifying it.

4 0
2 years ago
Other questions:
  • Would the answer be c??
    14·1 answer
  • Can u help me awser this
    15·2 answers
  • A data set includes data from student evaluations of courses. The summary statistics are nequals99​, x overbarequals3.58​, sequa
    9·1 answer
  • On Sunday, 15 family members of the Crowe family met for dinner. They each received an equal amount of the meatloaf, which weigh
    9·2 answers
  • Lan scores 44out of 60 maths test.what is his score as a percentage to 1 decimal place
    9·1 answer
  • HELP PLEASE!
    10·2 answers
  • Jason is buying a car, and he wants to pay for it in 48 monthly installments. If the total cost of the car is $9,300, how much w
    12·1 answer
  • The manufacturer of official NFL footballs uses a machine to inflate its new balls to a pressure of 13.5 pounds. When the machin
    12·1 answer
  • The length of a rectangle is 3x+5 and the width of a rectangle is 4. If the area of the rectangle is 44 feet, solve for x.
    15·1 answer
  • If f(x)=3x+7, find: f(-2)= [?]
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!