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
poizon [28]
3 years ago
15

Calculate the molar mass of Al2O3. A) 70 g/mol B) 43 g/mol C) 102 g/mol D) 210 g/mol

Chemistry
1 answer:
Zarrin [17]3 years ago
4 0

Answer:

C) 102 g/mol

Explanation:

Al = 27g/mol * 2 = 54

O = 16 g/mol * 3 = 48

48+54=102 g/mol

You might be interested in
Balance this equation. Pb(NO3)2(aq)+NaCl(aq) -> NaNO3(aq)+PbCl2(s)
const2013 [10]

Answer:

Pb(NO3)2(aq) + 2NaCl(aq) -> 2NaNO3(aq)+PbCl2(s)

Explanation:

Pb(NO3)2(aq)+NaCl(aq) -> NaNO3(aq)+PbCl2(s)

This is how it starts out.

Left:

  • 2 NO3s
  • 1 Pb
  • 1 Na
  • 1 Cl

Right

  • 1 Na
  • 1 NO3
  • 1 Pb
  • 2 Cl

So the place to start with this equation is to bring the Cls up to 2

Pb(NO3)2(aq)+2NaCl(aq) -> NaNO3(aq)+PbCl2(s)

But the Nas are now out of kilter.

Pb(NO3)2(aq)+ 2NaCl(aq) -> NaNO3(aq)+PbCl2(s)

Now the right has a problem. There's only 1 Na

Pb(NO3)2(aq) + 2 NaCl(aq) -> 2NaNO3(aq)+PbCl2(s)

Check it out. It looks like we are done.

5 0
2 years ago
57. The orbitals of an atom are distinguished from each other on the basis of their size, shape, and orientation in
Scilla [17]
False they are distinguished by probability
6 0
3 years ago
Read 2 more answers
Describe Write your own caption for this photo.
koban [17]

Answer:

Sit by the fire to warm up

Explanation:

5 0
2 years ago
Is weathering long term or short term and why​
Marrrta [24]
Long term because if you leave something out to be weathered then it can’t be unweathered because of the drastic change of the object.
4 0
3 years ago
When the heat of reaction (H=ve), the reaction is Endothermic reaction<br> True<br> False
juin [17]
False because that doesn’t make sense
6 0
3 years ago
Read 2 more answers
Other questions:
  • What is the molecular weight of H3PO4
    8·1 answer
  • Which of the statements about elements is true?
    8·2 answers
  • Atomic emission spectra are produced when the light emitted by an element passes through a prism. Which of the following stateme
    11·1 answer
  • what is a measure of the amount of matter in an object while what is a measure of the force of gravity acting on an object
    5·1 answer
  • Determine la fórmula empírica de un compuesto que contiene:
    14·1 answer
  • A given mass of oxygen occupies 500 ml when the
    6·1 answer
  • There are three subatomic particles found inside atoms. Two of the subatomic particle have a charge of positive or negative. The
    15·2 answers
  • I need help on this
    14·1 answer
  • Just need help with this last question
    8·2 answers
  • Can someone help me with this
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!