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
fomenos
3 years ago
8

How many grams oxygen are present in 76.8g of CO2

Chemistry
2 answers:
katrin [286]3 years ago
8 0
There would be 55.8 g present
Kitty [74]3 years ago
4 0

Anwer: 21.0g

Explanation:

But I noticed you got another.  I wanted to see what I did wrong. Can you show me how you got 55.8g

You might be interested in
At the boiling point, the vapor pressure of a liquid is equal to the _______.
Marat540 [252]
At the boiling point, the vapor pressure of a liquid is equal to the atmospheric pressure.
6 0
3 years ago
Morphine is a well known pain killer but is highly addictive. The lethal dose of morphine varies from person to person based on
Aliun [14]

Answer:

0.252 milimoles

Explanation:

To convert mass of a substance to moles it is necessary to use the molar mass of the substance.

The formula of morphine is C₁₇H₁₉NO₃, thus, its molar mass is:

C: 17*12.01g/mol = 204.17g/mol

H: 19*1.01g/mol = 19.19g/mol

N: 1*14g/mol = 14g/mol

O: 3*16g/mol = 48g/mol.

204.17 + 19.19 + 14 + 16 = <em>285.36g/mol</em>

Thus, moles of 71.891 mg = 0.071891g:

0.071891g × (1mol / 285.36g) = 2.5193x10⁻⁴ moles

As 1 mole = 1000 milimoles:

2.5193x10⁻⁴ moles = <em>0.252 milimoles</em>

7 0
3 years ago
If you need some points and are good at science help!
bonufazy [111]

Answer:

region 2 and region 3

Explanation:

you can tell by the color of the land my friends^^

6 0
3 years ago
Read 2 more answers
A solution contains 0.036 M Cu2+ and 0.044 M Fe2+. A solution containing sulfide ions is added to selectively precipitate one of
Ratling [72]

Answer:

The precipitate is CuS.

Sulfide will precipitate at  [S2-]= 3.61*10^-35 M

Explanation:

<u>Step 1: </u>Data given

The solution contains 0.036 M Cu2+ and 0.044 M Fe2+

Ksp (CuS) = 1.3 × 10-36

Ksp (FeS) = 6.3 × 10-18

Step 2:  Calculate precipitate

CuS → Cu^2+ + S^2-         Ksp= 1.3*10^-36

FeS → Fe^2+ + S^2-      Ksp= 6.3*10^-18

Calculate the minimum of amount needed to form precipitates:

Q=Ksp

<u>For copper</u>  we have:  Ksp=[Cu2+]*[S2-]

Ksp (CuS) = 1.3*10^-36 = 0.036M *[S2-]

[S2-]= 3.61*10^-35 M

<u>For Iron</u>  we have: Ksp=[Fe2+]*[S2-]

Ksp(FeS) = 6.3*10^-18 = 0.044M*[S2-]

[S2-]= 1.43*10^-16 M

CuS will form precipitates before FeS., because only 3.61*10^-35 M Sulfur Ions are needed for CuS. For FeS we need 1.43*10^-16 M Sulfur Ions which is much larger.

The precipitate is CuS.

Sulfide will precipitate at  [S2-]= 3.61*10^-35 M

3 0
3 years ago
Calculate the [oh] for 0.46 Hcl
Bad White [126]

Answer:

2.17 e -14

Explanation:

A strong acid like HCl ionize 100 % in water so [H3O+] = 0.46 M

[OH-] = Kw /  [H3O+]

        =  1.0 e -14 / 0.46

         = 2.17 e -14

3 0
3 years ago
Other questions:
  • Based on what you have learned about intermolecular forces, would you say that matter is fundamentally attracted or repulsed by
    9·1 answer
  • What is the difference between displacement and double displacement reactions?
    5·1 answer
  • Which of the following elements would be classified as a nonmetal? sulfur aluminum silicon calcium
    12·2 answers
  • (a) Write the reaction for the overall oxidation of propane (C3H8) with oxygen to produce CO2 and water.
    14·1 answer
  • What is the cell membrane?
    7·2 answers
  • What is the basic unit of mass in the metric system?
    5·2 answers
  • State two causes of cracked and sore nipples during breastfeeding
    10·1 answer
  • When making an observation you should provide a general description of the subject rather than going into too much detail true o
    11·1 answer
  • How does the tilt of earth <br>affect the climate?
    15·1 answer
  • a chemist dissolves 0.564 moles of manganese (IV) oxide (MnO2) in water, and adds enough water to make 0.510 L of solution. Calc
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!