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
erik [133]
3 years ago
11

The refining of aluminum from bauxite ore (which contains 50.% Al2O3 by mass) proceeds by the overall reaction 2Al2O3 + 3C → 4Al

+ 3CO2. How much bauxite ore is required to give the 5.0  1013 grams of aluminum produced each year in the United States? (Assume 100% conversion.)
Chemistry
1 answer:
iragen [17]3 years ago
8 0

Answer:

18.9 x 10¹³ grams of Bauxite Ore

Explanation:

Al₂O₃ = 50% of Bauxite Ore

Al₂O₃ = 0.5 (Bauxite Ore)--------------------------------------- (1)

Overall reaction:

2Al₂O₃ + 3C → 4Al + 3CO₂--------------------------------------- (2)

[ Al= 27 , O=16, C=12]

From  (2), 2 moles of  Aluminium oxide (Al₂O₃) gives  4 moles of Aluminium

In terms of grams, we can say:

Al₂O₃ = [2(27) +3(16)]

         = 54 +48

         =102grams

2 moles of Al₂O₃ = 2 x102grams

                            =204grams

4 moles of Al = 4 x 27

                      =108 grams

So from (2):

204 grams of  Al₂O₃   = 108 grams of  Aluminium

x grams of  Al₂O₃        =  5.0 x 10¹³grams of Aluminium

Calculating for x:

x =  (204 x  5.0 x 10¹³)/ 108

  = 9.44 x 10¹³ grams

So 9.44 x 10¹³ grams of pure bauxite (Bauxite) is required.

However the to calculate the quantity of raw bauxite, we use (1):

Bauxite ore = Pure Bauxite/0.5

                   =   9.44 x 10¹³ grams/0.5

                   =   18.88 x 10¹³ grams

                    ≈ 18.9 x 10¹³ grams

 

You might be interested in
What does the p mean in 1s22s22p63s??
larisa86 [58]

Answer:

subshel

or orbital

7 0
2 years ago
New concept cars in the Detroit Auto Show feature engines that burn hydrogen gas in air to produce water vapor. Suppose that fue
Maksim231197 [3]

Answer:

247.2g

Explanation:

Using the general gas law equation as follows:

PV = nRT

Where;

P = pressure (atm)

V = volume (L)

n = number of moles (mol)

R = gas law constant (0.0821 Latm/molK)

T = temperature (K)

According to the information in this question, a fuel tank contains 150. L (V) of H2 gas at 20.0 atm (P) at 25.0˚C (T)

Temperature = 25°C = 25 + 273 = 298K

Using PV = nRT

20 × 150 = n × 0.0821 × 298

3000 = 24.4658n

n = 3000/24.4658

n = 122.62

n = 122.6mol

Using the formula, mole = mass/molar mass, to find the mass of H2 gas.

Molar mass of H2 = 1.008(2)

= 2.016g/mol

122.6 = mass/2.016

mass = 122.6 × 2.016

mass = 247.2g.

3 0
3 years ago
What is a chemical change of a juicy burger and a waffle fry
devlian [24]

there needs to be more info

6 0
2 years ago
Read 2 more answers
If an old car burns 0.05 mL oil every mile, How much oil will it burn if driven 100,000 miles? Show your answer in mL and L?.
Irina18 [472]

0.05 * 100000

= 5000ml

= 5L

7 0
3 years ago
Someone help with this please
Tju [1.3M]
To me I think if the number of snakes increased, the number of rabbits decreases. Hope u got it correct ; )
3 0
3 years ago
Other questions:
  • Which of these is a characteristic of pseudoscience but not a characteristic of science? (4 points)
    9·1 answer
  • Can anyone help me? it's chemistry​
    15·1 answer
  • To show the electron configuration for an atom, what is the advantage of using an orbital notation compared to a dot structure?
    12·2 answers
  • 20cm³ of methane gas was burnt in 20cm³ of oxygen. write a balanced chemical equation for the reaction and determine which of th
    15·1 answer
  • in the laboratory, a group of students was assigned to determine the density of an unknown liquid. They used a buret to find a v
    15·1 answer
  • Pure phosgene gas (COCl2), 0.0340 mol, was placed in a 1.50−L container. It was heated to 700.0 K, and at equilibrium, the press
    6·1 answer
  • I need these questions answered
    5·2 answers
  • A gold block with a mass of 325 g was heated from 22°C to 87°C. How much heat
    15·1 answer
  • . How do metals and non-metals
    5·1 answer
  • Element X has an average atomic mass of 64.32 amu. If this element consists of only two isotopes, X-64 and X-65, which isotope i
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!