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
noname [10]
2 years ago
5

Consider that calcium metal reacts with oxygen gas in the air to form calcium oxide. suppose we react 7.43 mol calcium with 4.00

mol oxygen gas. determine the number of moles of calcium left over after the reaction is complete.
Chemistry
1 answer:
Natali [406]2 years ago
4 0
The balanced chemical equation for the above reaction is as follows;
2Ca + O₂ --> 2CaO
stoichiometry of Ca to O₂ is 2:1
this means that 2 mol of Ca reacts with 1 mol of O₂.
If O₂ is the limiting reactant, 
4 mol of O₂ should react with (4x2) - 8 mol of Ca
however only 7.43 mol of Ca is present. Therefore Ca is the limiting reactant.
7.43 mol of Ca reacts with - 7.43/2 = 3.715 mol of O₂
therefore there's excess O₂₂ remaining after the reaction
Since Ca is the limiting reactant, it is fully used up in the reaction and there is no Ca remaining after the reaction is completed.


You might be interested in
What two elements in the sun mostly made of
ivanzaharov [21]

The sun is made up of two main elements, hydrogen and helium.

  • Hydrogen makes up about 92% of all of the atoms in the sun while helium makes up about 7.8%.
  • Oxygen, carbon, neon and nitrogen make up most of the remaining 0.2%.
8 0
3 years ago
Help for brainliest
Margarita [4]

Answer:

those things that looks like cristals

8 0
3 years ago
What attractive forces must be overcome when CsI is dissolvedin<br> liquid HF?
bagirrra123 [75]

Answer:

The attractive forces must be overcome are :

  • Ion- ion interaction
  • Dipole - Dipole  
  • Hydrogen Bonding  

Explanation:

For the compound to dissolve the attractive forces existing between atoms of the compound must be reduced

<u>CsI is ionic compound </u><em>and its molecules are held together by ionic(electrostatic) force . These force must be weakened for its dissolution</em>

Forces in HF <em>:</em>

<em>1 .Hydrogen Bonding :  In HF strong intermolecular Hydrogen Bonding exist between the electronegative F and Hydrogen</em>

2. Dipole - dipole : <em>HF is polar . So it is a permanent dipole and has dipole diople interaction</em>

4 0
3 years ago
Each of the following names is wrong. Draw structures based on them, and correct the names:(b) 1,1,1-trimethylheptane
devlian [24]

The correct IUPAC name of 1,1,1-trimethylheptane is 2,2-dimethyloctane.

<h3>IUPAC NAME:</h3>

It is systematic way of nomenclature of organic compounds.

It is based on the position of functional groups, preference of the functional group, long or short chain of carbon, preference of double bond, single and triple bond, branching of carbon chain, etc.

The given compound is 1,1,1-trimethylheptane.

The given name is wrong according to IUPAC name because the numbering of carbon atom should be done in that way in which the carbon atom chain is largest.

Here, in this case the numbering is done from right side. Thus the largest carbon chain have 8 carbon atom.

If the numbering is done according to the question, number of carbon atom in straight chain is 7.

Thus, we concluded that the Correct IUPAC name of 1,1,1-trimethylheptane is 2,2-dimethyloctane.

learn more about Nomenclature:

brainly.com/question/14094007

#SPJ4

5 0
2 years ago
Nvmmmmmmmmmmmmmmmmmmmmmmmmm lol
Vlad1618 [11]

Answer:

coooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooool lol

Explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • What Is Solubility and saturated solution?
    14·1 answer
  • The following reaction is a fusion/fission reaction.<br><br>- Equation is attached as an image -
    8·1 answer
  • Please put in order from LARGEST WAVELENGH TO SHORTEST YOU WILL GET BRAINLIEST AND 25 POINTS START FROM TOP TO BUTTON
    12·1 answer
  • Identify the element of Period 2 which has the following successive ionization energies, in kJ/mol. IE1, 1314 IE2, 3389 IE3, 529
    12·1 answer
  • If a sample of magnesium has a mass of 60.0 g, how many moles of magnesium does the sample contain
    5·1 answer
  • What's the balanced chemical equation of magnesium reacting with silver nitrate to produce silver and magnesium nitrate?
    7·1 answer
  • A harbour seal's flipper and a human hand have a very similar structure, but function differently. This is an example
    5·2 answers
  • Which picture accurately represents the type of orbital occupied by the electrons in a beryllium atom
    7·1 answer
  • How many atoms of hydrogen are there in HCOOH2?
    7·1 answer
  • ANSWER QUICK PLEASE <br> WORTH 100 POINTS
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!