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
padilas [110]
3 years ago
12

Calculate the percent composition by mass of each element in Al(OH)3. Use at least three significant figures.

Chemistry
2 answers:
motikmotik3 years ago
7 0

Answer:

nope nope nope nope nope nope nope nope

serg [7]3 years ago
4 0

Answer:

Al= (27/78)x100

Al= 34.6%

O= (48/78)x100

O= 61.5%

H= (3/78)x100

H= 3.85%

You might be interested in
Please help me with this friends.​
Radda [10]
Where is the picture to this?
3 0
3 years ago
When a substance changes from gas to liquid at a temperature below its boiling point, ____ has taken place.
puteri [66]
That would be evaporation.
Hope this helped!! xx
5 0
4 years ago
A 2.75 kg sample of a substance occupies a volume of 250.0 cm3. Find its density in g/cm3.
satela [25.4K]
Density is 0.011 g/cm3.
5 0
3 years ago
Read 2 more answers
Calculate the mass of water produced when 42 g of propane, c3h8, is burned with 115 g of oxygen
gavmur [86]
The balanced combustion reaction of propane, C₃H₈, is

C₃H₈ + 5 O₂ → 3 CO₂ + 4 H₂O

Molar mass of propane: 44 g/mol
Moles of propane = 42 g * (1 mol/44g) = 0.9545 mol propane

Molar mass of oxygen: 32 g/mol
Moles of oxygen = 115 g * (1 mol/32 g) = 3.594 mol oxygen

Moles of oxygen needed to completely react propane:
0.9545 mol propane * (5 mol O₂/1 mol propane) = 4.7725 mol oxygen

Since the available oxygen is only 3.594 moles and propane needs 4.7725 moles, that means oxygen is our limiting reactant. We base the amount of water produced here.

Molar mass of water: 18 g/mol
Mass of water produced = 3.594 mol O₂ * (4 mol H₂O/5 mol O₂) * (18 g/mol)
Mass of water produced = 258.768 grams
6 0
3 years ago
PLEASE HELP WITH ENVI SCI QUESTION
Vladimir79 [104]
Different types of acid deposition are

sulphur dioxide
nitroges oxides
3 0
4 years ago
Other questions:
  • An __________ is defined as a substance that ionizes in water.
    8·2 answers
  • Which of the following symbols would be included in the noble gas notation for an element that had valence electrons in the 5s s
    14·2 answers
  • Calculate the mass in grams 3.00 moles Na
    15·1 answer
  • Which functional group does the molecule below have?
    11·1 answer
  • In the simulation, open the micro mode, then select solutions indicated below from the dropdown above the beaker in the simulati
    9·1 answer
  • Which statements best describe fossils? Check all that apply.
    15·2 answers
  • write a balanced net ionic equation for the following reaction: BaCl2(aq) + H2SO4 (aq) -- BaSO4(s) + HCl (aq)
    12·2 answers
  • Calculate the concentration of H3O+ in a solution that contains 5.5 × 10-5 M OH- at 25°C. Identify the solution as acidic, basic
    13·1 answer
  • What evidence supports a scientist's conclusion that fossil B is older than fossil A? (4 points)
    12·1 answer
  • Follow these steps:
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!