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
Citrus2011 [14]
2 years ago
10

FIND THE RATIO BY MASS OF THE COMBINING ELEMENTS IN THE FOLLOWING COMPOUNDS

Chemistry
1 answer:
boyakko [2]2 years ago
5 0
The given compound is Aluminum sulfate, Al2(SO4)3:

Molar masses:

Aluminum = 27 g/mol
Sulfur = 32 g/mol
Oxygen = 16 g/mol

The total molar mass is 342 g/mol
The ratio by mass of the elements:

Aluminum = 27*2/342 
                  = 0.16
Sulfur = (32*3)/342
           = 0.28
Oxygen = (16*12)/342
              = 0.56
<span />
You might be interested in
One problem with elimination reactions is that mixtures of products are often formed. For example, treatment of 2-bromo-2-methyl
NikAS [45]

Answer:

Structures are given below.

Explanation:

  • Treatment of 2-bromo-2-methylbutane with KOH in ethanol will give elimination of HBr through E2 mechanism.
  • H atoms adjacent to Br will be eliminated.
  • 2-bromo-2-methylbutane has two possible adjacent H atoms that can be eliminated giving mixture of products.
  • Product of this elimination reaction is alkene. Here saytzeff fule is followed during elimination. So most substituted alkene will be major product.
  • Structure of alkenes are given below.

5 0
2 years ago
The indicator propyl red has a Ka of 3.3 X 10-6 . It is red at low pH and yellow at higher pH. What is the approximate pH range
Alik [6]

Answer:

4.48 - 6.48

Explanation:

A pH indicator works in a better way in a range of pH = pKa ± 1. That means we need to determine the pKa of the indicator propyl red to find the range over which it change its color. That is:

pKa = -log Ka

pKa = -log 3.3x10⁻⁶

pKa = 5.48

That means the range over propyl red will change from yellow to red or vice versa is:

4.48 - 6.48

5 0
2 years ago
The following reaction is found to be at equilibrium at 25 celcius: 2SO3---&gt;O2 + 2SO2 + 198kJ/mol. If the value for Kc at 25
kondaur [170]

Answer:

D.) Products are weakly favored

Explanation:

For the reaction:

2SO₃ ⇄ O₂ + 2SO₂ + 198kJ/mol

The kc is defined as:

kc = [O₂] [SO₂]² / [SO₃]²

As the kc is 8,1:

8,1 [SO₃]² =  [O₂] [SO₂]²

The products are favored 8,1 times. This is a weakly favored because the usual kc are in the order of 1x10⁴. Thus, right answer is:

D.) Products are weakly favored

I hope it helps!

4 0
3 years ago
9.25 * 10^21 pennies if how many moles
Brrunno [24]
According  to  Avogadro constant   1  mole  =  6.02  x   10^23    what  about   9.25  x10  ^21

that  is    1  mole  x   (  9.25  x10  ^21)  /  (6.02 x10^23)  =  0.0154  moles
8 0
3 years ago
Please help me answer this question
NemiM [27]

Answer:

d=m/v d=0.94

Explanation:

^^^^^^&&&&^^^^

7 0
2 years ago
Other questions:
  • Why is it so important in an ideal simple experiment to change only one variable from trial to trial?
    8·1 answer
  • 1) What happened around 10,000 years ago that changed the way many humans live?
    9·2 answers
  • What three factors affect the biodiversity of an ecosystem
    10·2 answers
  • How many moles of C8H18 contain 9.25 × 1024 molecules of C8H18 ?
    9·1 answer
  • Find x, y, and z such that x³+y³+z³=k, for each k from 1 to 100.
    10·1 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
  • How many moles of KBr will be produced from 7 moles of BaBry?<br> BaBr2+ K2SO4 → KBr +BaSO4
    9·1 answer
  • 3. The substance that is formed or we finish up with are called.​
    15·1 answer
  • A new computer chip contains 4.71×1022 Si atoms. Determine the mass (in grams) of the silicon present in the computer chip.
    5·1 answer
  • the synthesis of aspirin is a common esterification reaction. it is based on the balanced reaction given in the background of th
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!