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
o-na [289]
3 years ago
10

an oxygen tank used for scuba diving has. avolume of 12.0 L .If the pressure of the tank is known to be 204.047 atm and the temp

erature is 22.0 C(295 K), how many moles of oxygen are contained in the tank
Chemistry
1 answer:
Lapatulllka [165]3 years ago
5 0

Answer: 101 moles of oxygen are contained in the tank

Explanation:

According to ideal gas equation:

PV=nRT

P = pressure of gas = 204.047  atm

V = Volume of gas = 12.0 L

n = number of moles  = ?

R = gas constant =0.0821Latm/Kmol

T =temperature =22.0^0C=(22.0+273)K=295K

n=\frac{PV}{RT}

n=\frac{204.047atm\times 12.0L}{0.0821 L atm/K mol\times 295K}=101moles

Thus 101 moles of oxygen are contained in the tank

You might be interested in
B) calculate the ratio of moles of h2o to moles of anhydrous kal(so4)2. note: report the ratio to the closest whole number. (sho
Sindrei [870]

Answer: -

Mass of Hydrated KAl(SO₄)₂ = 2.0 g

Molar mass of anhydrous KAl(SO₄)₂ = 258.20 g/ mol

Mass of of anhydrous KAl(SO₄)₂ = mass of the 2nd heating = A

The mass of water released = mass of the Aluminum Cup + 2.0 grams of KAl(SO₄)₂ - mass of the 2nd heating

= H g

Moles of water released = \frac{H g}{18 g/mol}

Moles of anhydrous KAl(SO₄)₂ = \frac{A g}{258.20 g/mol}

Required ratio = \frac{moles of water}{moles of anhydrous KAl(SO4)2}

5 0
3 years ago
How many significant figures are in these numbers ​
jenyasd209 [6]

Answer:

9

Explanation:

a significant number is a non zero number or exponent or a zero between numbers

8 0
2 years ago
An occluded front moves over farmland that has been experiencing drought conditions.
cupoosta [38]
Should be B. An extended period of rain
6 0
2 years ago
Read 2 more answers
Graves' disease causes the thyroid gland to produce an excess of thyroid hormone. The student uses the computer simulation to in
Anvisha [2.4K]

T3/T4 I think, sorry if it is wrong. :/

8 0
3 years ago
What volume of a 4.5 m solution of phosphate is necessary to create a 80.0 ml stock of 2.0 m phosphate solution?
11Alexandr11 [23.1K]

Answer: V1 = 45.6 ml

Explanation:

This is a dilution process whereby the concentration of phosphate in the solution is being reduced from 4.5m to 2m. Meanwhile. In a concentration process, the concentration of the phosphate solution will be increased. It can be achieved by removing solvents.

The dilution equation will be used. The equation is as follows:

M1V1 = M2V2 where

V1 = Initial volume of phosphate solution.

M1 = Initial concentration of phosphate solution.

V2 =Final volume of phosphate solution.

M2 = Final concentration of phosphate solution .

From the information given,

M1 = 4.5

V1 = ?

M2 = 2.0

V2 = 80

4.5 × V1 = 2×80

4.5V1 = 160

V1 = 160/4.5

= 35.6 ml

3 0
3 years ago
Other questions:
  • How many total orbitals are within the 3s 3p, and 3d sublevels of the third
    13·2 answers
  • Toolkit <br> How many energy levels does sulfur have?<br> A. 2<br> B. 3<br> C. 4<br> D. 14
    13·1 answer
  • If 20.0 g of NaOH is added to 0.750 L of 1.00 M Cd(NO₃)₂, how many grams of Cd(OH)₂ will be formed in the following precipitatio
    14·1 answer
  • Can science be disproven by philosophy or religion
    15·1 answer
  • . An aqueous solution ‘A’ turns phenolphthalein solution pink. On addition of an aqueous solution ‘B’ to ‘A’, the pink colour di
    7·1 answer
  • James took two pea plants, placing one in a dark closet and the other on a sunny window sill. Both are located in air conditione
    9·2 answers
  • Write a hypothesis to answer the lesson question
    13·1 answer
  • What is skeleton?<br>Write any two function of skeleton .​
    14·1 answer
  • I
    10·1 answer
  • Which stage of the cell cycle results in two identical cells?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!