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
gavmur [86]
3 years ago
8

What is the maximum amount of energy that could be produced from the reaction of 85.0 grams of Aluminum with 95.0 grams of oxyge

n, according to the following reaction?
4 Al + 3 O2 = 2 Al2O3 AHH = -3352 kJ
Chemistry
1 answer:
Tom [10]3 years ago
5 0

Answer:

47 kj

Explanation:

You might be interested in
Chris the chemist was working in the and he wanted to sou what would happen he put copper chloride into a Bunsen flameAs soon as
Reptile [31]

The question is incomplete, the complete question is;

Chris the Chemist was working in the lab, and he wanted to see what would happen if he put copper chloride into a Bunsen burner flame. As soon as he put it in the flame, it began to emit a green color. Which of these BEST describes this outcome?

A) The heat split the nucleus and created a new element.

B) As the copper chloride was heated, electrons were turned into neutrons.

C) As the electrons moved to a higher energy level, a photon of light is emitted.

D) When excited electrons return back to the ground state, a photon of light is emitted.

Answer:

D) When excited electrons return back to the ground state, a photon of light is emitted.

Explanation:

According to Bohr's model of the atom, electrons may absorb energy and move up to higher energy levels.

These electrons quickly return to ground state from such higher energy excited states thereby emitting the excess energy absorbed during excitation.

If the higher energy level is E2 and the ground state is E1 then the energy of the photon emitted when the electron descends from energy level E2 to E1 is;

ΔE = E2 - E1

This photon emitted accounts for the green colour of the copper salt observed when it was heated.

4 0
3 years ago
What is the mass number of an atom which is made up of 27 protons,33 neutrons and 27 electrons?
Gelneren [198K]
27 is the mass number

7 0
3 years ago
How many liters of fluorine gas, at standard temperature and pressure, will react with 23.5 grams of potassium metal? Show all o
Sladkaya [172]

Potassium 23.5g/39.0983g/mol = 0.601mol

The Ratio of reactants is 2 to 1 so (0.601mol)/2 = 0.3005mol

Therefore 0.3005mol of F2 is needed to find liters use

formula V = nRT/P (V)Volume = 22.41L

(T)Temperature = 273K or 0.0 Celsius

(P)Pressure = 1.0atm

<span>(R)value is always .08206 with atm n = 0.3005moles (273)(.08206)(0.3005)/1 = V V = 6.7319 Liters</span>

8 0
3 years ago
Read 2 more answers
In a chemical change
Vsevolod [243]

Answer:

B. materials change their properties.

Explanation:

In a chemical change, materials often change their properties because a re-arrangement of atoms takes place.

A chemical change is one in which new kind of matter is formed.

It is always accompanied by energy changes.

  • Chemical changes are not reversible.
  • They lead to the production of new kinds of matter
  • It involves mass changes
  • Requires considerable amount of energy
8 0
3 years ago
Los electrónes casi no tienen
kondaur [170]

Answer:

yedd

Explanation:

5 0
3 years ago
Other questions:
  • When glass is formed, which of these takes place FIRST?
    9·2 answers
  • The number of moles in 250 L of He gas at STP is ________ mol, Round to a whole number,
    15·1 answer
  • Many objects have both kinetic and potential energy. List two examples of these.
    15·2 answers
  • I charged atom is called a _____.<br><br> Proton<br> Electrolyte<br> Isotope<br> Ion
    8·1 answer
  • Can y'all help me on number 10❤️
    5·1 answer
  • Answer pls will give brainliest
    9·1 answer
  • What element does HgNo​
    14·2 answers
  • How can scientific themes apply to many branches of science?
    7·2 answers
  • What is the energy of an object because of its potential and kinetic energies?
    14·1 answer
  • How many moles of NaCl are present in 2.50 L of a 0.070 M solution?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!