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
Ksivusya [100]
3 years ago
8

1) How many grams of CO are needed to react with an excess of Fe2O3 to produce 209.7g Fe? Show your work.

Chemistry
2 answers:
klasskru [66]3 years ago
6 0
1.) is157.7 g
<span>moles Fe = 209.7 g/ 55.847 g/mol=3.75 
the ratio between Fe and CO is 2 : 3 
moles CO = 3.75 x 3 /2 =5.63 
mass CO = 5.63 mol x 28.01 g/mol=157.7 g

2.) is </span><span>1.06 moles 
</span>48.7/23 = 2.12 moles sodium 
<span>2.12/2 x 24 = 25.44dm^3 hydrogen = 1.06 moles </span>
1.06 X 6.02x10^23 = 1.204x10^24 molecules of hydrogen.

3.) is 91.8 
<span>8.3 moles H2S x (2 moles H2O / 2 moles H2S) = 8.3 moles H2O = theoretical amount produced. </span><span>8.3 moles H2O x (18.0 g H2O / 1 mole H2O) = 149 g H2O produced theoretically. </span><span>% yield = (actual amount produced / theoretical amount) x 100 = (137.1 g / 149 g) x 100 = 91.8 </span>
Travka [436]3 years ago
5 0
Mol Fe = 209.7/56 = 3.744 mol Fe
mol CO = 3.744 * 3/2 (mol ratio) = 5.616 mol CO
molecular weight of CO = 28
5.616 * 28 = 157.28 g CO needed

48.7/23 = 2.11 mol Na
2.11 * 1/2 = 1.055 mol H2
1.055 * 6.023*10^23 = 6.351 x 10^23 molecules of H2

8.3 * 2/2 = 8.3 mol H2O that could be produced
137.1/18 = 7.166 mol actually produced
7.616/8.3 * 100% = 91.75% produced (% yield)
You might be interested in
A neutral atom of Cl-37 has
Ostrovityanka [42]

Answer:

17 protons, 20 neutrons, and 17 electrons​.

Explanation:

A periodic table can be defined as the standard arrangement of chemical elements by atomic number, electronic configuration and chemical properties in a tabular form.

Generally, a proper representation of the mass number and atomic number of chemical elements is key and very important in chemistry.

Furthermore, as a rule, it should be noted that the mass number (nucleon number) is always larger than the atomic number(number of proton).

The mass number of this neutral atom of Cl-37 is 37 and we know that the atomic number (number of protons) of chlorine is 17. Also, the atomic number of an element is equal to the number of its electrons.

A neutral atom of Cl-37 has 17 protons, 20 neutrons, and 17 electrons.

Hence, a neutral atom of Cl-37 can be identified based on its number of protons because it represent its atomic number, which is what is used to differentiate an atom of an element from the atom of another chemical element.

6 0
2 years ago
A 5.00 gram sample of water is heated so that its temperature increases from 10.0°C to 15.0°C. What is the
tresset_1 [31]

Answer:

15.0°C

Explanation:

hope it helps

3 0
3 years ago
Someone plz help me
a_sh-v [17]

Answer:

A experimental investigation

3 0
2 years ago
Will something that is water soluble dissolve in oil
lawyer [7]
Something like that wouldn't dissolve in oil
4 0
3 years ago
Ca(C2H302)2<br> Name the following compounds.
lesya [120]

Answer:

nut

Explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • Which of these statements is not true about chemical reaction rates
    7·2 answers
  • A 25.0 g piece of aluminum (which has a molar heat capacity of 24.03 J/mol°C) is heated to 86.4°C and dropped into a calorimeter
    6·1 answer
  • A 15 % salt (NaCl)solution is made with 750.0 grams of solution. What is the mass of sodium chloride used to make the solution?
    10·1 answer
  • The chemical symbol for sodium is<br> A. N.<br> B. S.<br> C. Na.<br> D. Sn.
    5·2 answers
  • Help me please
    12·1 answer
  • The average American is looking at their phone for 6.25 hours a day. How many hours will the average American spend on their pho
    14·1 answer
  • A sealed balloon occupies a volume of 250 mL at an unknown temperature. When the temperature is altered to 30 C, the balloon's v
    10·1 answer
  • Need help asap!!!!<br> will mark brainliest!!!
    9·1 answer
  • What is the primary result of a fission
    6·1 answer
  • If an emergency vehicle passes you in traffic, just as it passes you the pitch of
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!