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
Maru [420]
3 years ago
9

HELPP!!

Chemistry
1 answer:
katrin [286]3 years ago
4 0

Answer:

0.119 moles

Explanation:

molar mass of Fe = 55.845g

to find moles = mass/ molar mass

so moles of Fe = 20/55.845

= 0.358 moles

for the equation you are given

for every three Fe, it produces 1 Fe3O4 , meaning the ratio is 3:1

if you have 0.358 moles of Fe, that means the number of moles of Fe3O4  will equal to one third of that,

thus

moles of Fe3O4 = 1/3 x 0.358 = 0.119

You might be interested in
A sample of C3H8 has 8.08 × 1024 H atoms.
quester [9]
(8.08x10^24 H atoms)(3 C atoms/8 H atoms)
=3.03x10^24 C atoms
3.03x10^24+8.08x10^24=1.111x10^25 atoms total
(1.111x10^25)/(6.02x10^23)=18.4551495 mol C3H8
18.4551495(44.01)=812.2111296g C3H8
5 0
4 years ago
Read 2 more answers
What is called a measurement and does involve a number and unit in chemistry?​
marta [7]

Answer:

1.1: Taking Measurements. Chemists measure the properties of matter and express these measurements as quantities. A quantity is an amount of something and consists of a number and a unit. The number tells us how many (or how much), and the unit tells us what the scale of measurement is.

3 0
2 years ago
Which are base units used in the metric system? Check all that apply. quarts liters grams degrees Fahrenheit degrees Celsius pin
slega [8]

Answer:

The correct answer is liters , grams, degrees Celsius

Explanation:

The metric system is called also international system of units with this short symbols (SI) , It consists of many base units which can measure any physical amount or quantity .example for this bas units the Liters to measure volume, the kilogram and gram to measure the mass , Celsius degrees to measure the temperature using thermometers , also Ampire for measuring the current of the electricity and the second in measuring the time

but quarts ,  degrees fahrenheit and pints are parts of the imperial system

8 0
3 years ago
If a plant uses 44 grams of carbon dioxide and 18 grams of water to produce 32 grams of oxygen, how many grams of glucose are pr
Tems11 [23]
The balanced equation for the reaction is as follows 
6H₂O + 6CO₂ ---> C₆H₁₂O₆ + 6O₂

number of moles of CO₂ used - 44 g / 44 g/mol = 1 mol
number of moles of H₂O used - 18 g / 18 g/mol = 1 mol
stoichiometry of CO₂ to H₂O is 6:6 = 1:1
1 mol of CO₂ present and 1 mol of H₂O present therefore they are both fully used up in the reaction of molar ratio 1:1
number of moles of O₂ formed - 32 g/ 32 g/mol = 1 mol

stoichiometry of CO₂:H₂O:C₆H₁₂O₆:O₂ is 6:6:1:6
1 mol of CO₂ has reacted with 1 mol of H₂O to form 1 mol of O₂ and x mol of C₆H₁₂O₆

the number of C₆H₁₂O₆ moles is 1/6th of CO₂ moles used up
since CO₂ moles - 1 mol 
therefore C₆H₁₂O₆ moles formed - 1/6 mol = 0.167 mol
mass of glucose formed - 0.167 g x 180 g/mol = 30 g 
therefore 30 g of glucose is formed 
5 0
3 years ago
0.00121 mol to grams
Gwar [14]

Answer: I believe the answer you are looking for is 0.02180

7 0
3 years ago
Other questions:
  • When 200g of AgNO3 solution mixes with 150 g of NaI solution, 2.93 g of AgI precipitates, and the temperature of the solution ri
    13·1 answer
  • What is the mass number of an atom with 6 protons and 7 neutrons
    8·2 answers
  • An object floats in sea water more readily because of sea water's:
    10·2 answers
  • Which is a nonrenewable source of energy?<br> Wind <br> Hydropower <br> Natural Gas<br> Solar Energy
    5·1 answer
  • Why do some obejects such as door and windows get bigger and smaller?
    10·1 answer
  • In order to produce CO2, a student put a sample of calcium carbonate in a flask and added hydrochloric acid using the following
    13·1 answer
  • Help I need a answer on question 18 and I only got 10 minutes
    13·1 answer
  • Two<br>moin tunetons of carbohydraus​
    15·1 answer
  • What is the volume in milliliters of 7.48 g of acetone?
    12·1 answer
  • Help me how to draw this graphhh??ASAPPPP
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!