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
katovenus [111]
3 years ago
6

Equation for questions 1-4:

Chemistry
1 answer:
Karolina [17]3 years ago
3 0

Answer:

5.625 moles of oxygen, O₂.

Explanation:

The balanced equation for the reaction is given below:

4Al + 3O₂ —> 2Al₂O₃

From the balanced equation above,

4 moles of Al reacted with 3 moles of O₂.

Finally, we shall determine the number of mole of O₂ required to react with 7.5 moles of aluminum, Al. This can be obtained as illustrated below:

From the balanced equation above,

4 moles of Al reacted with 3 moles of O₂.

Therefore, 7.5 moles of Al will react with = (7.5 × 3)/4 = 5.625 moles of O₂.

Thus, 5.625 moles of O₂ is needed for the reaction.

You might be interested in
Who was the first to state the concept of an atom
marin [14]
Democritus, a Greek philosopher, first developed the idea of atoms (around 460 B.C., I believe).
Hope this helps!
6 0
3 years ago
PLEASE HELP I WILL GIVE YOU BRAINLIEST PLEASE
g100num [7]

Answer:

the answer is the second choice actual force

6 0
2 years ago
Lithium reacts with chlorine to form a new substance.What other element will also with chlorine to form a new substance with sim
quester [9]

Answer:

Flourine

Explanation:

Chlorine is a member of the halogen family. Halogens are the elements that make up Group 17 (VIIA) of the periodic table, a chart that shows how elements are related to one another. They include fluorine, bromine, iodine, and astatine.

4 0
2 years ago
Please help asap!!!!
djyliett [7]
B is the answer..!
Disturbance is in a circular motion
7 0
3 years ago
Read 2 more answers
Calcule la densidad del hidrógeno H2 en g/L a 327 mm Hg y 48ºc
tankabanditka [31]
<h3>The density of H₂ = 0.033 g/L</h3><h3>Further explanation</h3>

In general, the gas equation can be written  

\large {\boxed {\bold {PV = nRT}}}

where  

P = pressure, atm , N/m²

V = volume, liter  

n = number of moles  

R = gas constant = 0.082 l.atm / mol K (P= atm, v= liter),or 8,314 J/mol K (P=Pa or N/m², v= m³)

T = temperature, Kelvin  

n = N / No  

n = mole  

No = Avogadro number (6.02.10²³)  

n = m / MW

m = mass  

MW = molecular weight

For density , can be formulated :

\tt \rho=\dfrac{P\times MW}{R\times T}

P = 327 mmHg = 0,430263 atm

R = 0.082 L.atm / mol K

T = 48 ºC = 321.15 K

MW of H₂ =  2.015 g/mol

The density :

\rho=\dfrac{0,430263\times 2.015 }{0.082\times 321.15}\\\\\rho=0.033~g/L

4 0
2 years ago
Other questions:
  • Enter a balanced equation for the dissolution of caco3.
    6·1 answer
  • Which of the following is NOT an example of a fossil fuel?
    10·1 answer
  • What is a line spectrum?
    15·1 answer
  • If a student rode his bike 102 hectometers, how many kilometers did he ride?
    12·1 answer
  • Volcanoes located at subduction zones tend to release lava high in?
    11·2 answers
  • _______ waves occur when the motion of the medium is parallel to the direction of the wave.
    11·1 answer
  • A chemist prepares a solution of sodium thiosulfate by measuring out of sodium thiosulfate into a volumetric flask and filling t
    8·1 answer
  • Draw an alkyl bromide with proper stereochemistry that can be used to synthesize the given alkene as the exclusive product via a
    7·1 answer
  • Please Help I will give a brainliest
    8·1 answer
  • When halogens react with metals,they form salts called....
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!