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
jeka94
3 years ago
13

The question below ......... in picture

Chemistry
1 answer:
Ivanshal [37]3 years ago
6 0

Answer:

10.49

Explanation:

3MgO + 2Fe — Fe2O3 + 3Mg

n(Fe2O3) = m/M

=15/159.69

=0.9393199324mol

1 Mol of Fe2O3 = 2 moles of Fe

Therefore n(Fe) =2 * 0.9393199324

=0.1878639865mol

m(Fe) = n*m.m

= 0.1878639865 * 55.8

=10.4828g

You might be interested in
Provide a title short explanation or description accompanying an illustration or a photograph ​
alexdok [17]
A small, green frog wearing a strawberry on its head as a hat

6 0
3 years ago
Various members of a class of compounds, alkenes, react with hydrogen to produce a corresponding alkane. Termed hydrogenation, t
Vitek1552 [10]

<u>Answer:</u> The mass of decane produced is 1.743\times 10^2g

<u>Explanation:</u>

To calculate the number of moles, we use the equation:  

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}       ......(1)

Mass of hydrogen gas = 2.45 g

Molar mass of hydrogen gas = 2 g/mol

Putting values in equation 1:, we get:

\text{Moles of }H_2=\frac{2.45g}{2g/mol}=1.225mol

The chemical equation for the hydrogenation of decene follows:

C_{10}H_{20}(l)+H_2(g)\rightarrow C_{10}H_{22}(s)

As, decene is present in excess. So, it is considered as an excess reagent.

Thus, hydrogen gas is a limiting reagent because it limits the formation of products.

By Stoichiometry of the reaction:

1 mole of hydrogen gas produces 1 mole of decane.

So, 1.225 moles of hydrogen gas will produce = \frac{1}{1}\times 1.225=1.225mol of decane

Now, calculating the mass of decane by using equation 1, we get:

Moles of decane = 1.225 mol

Molar mass of decane = 142.30 g/mol

Putting values in equation 1, we get:

1.225mol=\frac{\text{Mass of decane}}{142.30g/mol}\\\\\text{Mass of carbon dioxide}=(1.225mol\times 142.30g/mol)=174.3g=1.743\times 10^2g

Hence, the mass of decane produced is 1.743\times 10^2g

5 0
3 years ago
describes a type of reaction in which negative ions in two compounds switch places , forming two new compounds
Nadusha1986 [10]

Answer:

A double displacement reaction or double replacement reaction.

Explanation:

5 0
3 years ago
Read 2 more answers
What features did you use to classify igneous rocks as extrusive or intrusive ?
umka21 [38]

Answer: Igneous rocks may be simply classified according to their chemical/mineral composition as felsic, intermediate, mafic, and ultramafic, and by texture or grain size: intrusive rocks are course grained (all crystals are visible to the naked eye) while extrusive rocks may be fine-grained (microscopic crystals) or glass.

Explanation: Hope this helped! :)

6 0
3 years ago
Read 2 more answers
What is the density of a 12-gram sample of zinc with volume of 8.4 cm3? <br><br> pls hurry pls
Sindrei [870]

AnswerIm telling your teacher "Ms.Byrd" your in 8th grade and go to berry middle?

Explanation:

8 0
3 years ago
Other questions:
  • Which of the following definitions of pesticides in NOT correct? a. Herbicides are chemicals that kill plants. b. Insecticides a
    14·1 answer
  • 2Ag + H2S ➞ Ag2S + H2
    6·2 answers
  • 6. Organic or Inorganic?<br>a. 2C6H1206<br>b. 3HCI<br>c. 202<br>d. 3CH4<br>​
    5·1 answer
  • Why does increasing the concentration of reactants increase the reaction rate? A. Some of the reactants are likely to act as cat
    7·1 answer
  • HCI + NaOH →?<br> O NaCl + H20<br> O NaCl + CO2 + H20<br> O NaCl + H2
    13·1 answer
  • For the reaction below, determine the standard free energy change, δg o. cu(s) + sn2+(aq) → cu2+(aq) + sn(s) e o cell =–0.48 v v
    6·1 answer
  • As we learned, matter exists in different states--solid, liquid and gas. Which one of these could be described as having low den
    10·1 answer
  • Will give brainliest this is simple plz help
    10·1 answer
  • Help Pls pls I will give brainlist
    13·2 answers
  • Which of the following statements correctly explains how latitude affects temperature?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!