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
Irina18 [472]
3 years ago
11

A flask containing neon gas is connected to an open-endedmercury manometer. The open end is exposed to the atmosphere, wherethe

prevailing pressure is 745 torr. The mercury level in the openarm is 50 mm below that in the arm connected to the flask of neon.What is the neon pressure, in torr?
A. -50 torr

B. 50 torr

C. 695 torr

D. 795 torr

E. None of these choices is correct.
Chemistry
1 answer:
Tasya [4]3 years ago
5 0

Answer: Option (C) is the correct answer.

Explanation:

The given data is as follows.

          P_{bar} = 745 torr

          \Delta P = - 50 (the value is negative because on the open side its level is lower than the side connected to the gas)

Now, formula to calculate the pressure of neon gas will be as follows.

                 P_{neon} = P_{bar} + \Delta P            

Putting the given values into the above formula as follows.

               P_{neon} = P_{bar} + \Delta P        

                   = 745 torr + (- 50 torr)            

                   = 695 torr

Thus, we can conclude that the neon pressure is 695 torr.

You might be interested in
Urgent help! will mark as brainliest
kramer

Answer:

1. Negative

2. positive alpha

3. Gold

4. deflected

5. center

6. positive

7. positive

8. center

Hope this helps :)

7 0
2 years ago
Boron carbonate decomposes into boron oxide and carbon dioxide. How many moles of CO2
Paul [167]
<h3>Answer:</h3>

15 moles

<h3>Explanation:</h3>

The decomposition of boron carbonate is given by the equation;

B₂(CO₃)₃(s) → B₂O₃(s) + 3CO₂(g)

Moles of boron carbonate decomposed is 5.0 mol

To find the moles of CO₂ produced we are going to use the mole ratio.

Mole ratio of B₂(CO₃)₃ to CO₂ is 1 : 3

Therefore;

Moles of CO₂ = Moles of B₂(CO₃)₃ × 3

                      = 15 mol

Therefore, 15 moles of CO₂ will be produced

   

4 0
3 years ago
Calculate the new volume of 1.23 mL of a gas at 32 C is subjected to drop in temperature of 20 degrees Celsius
kotykmax [81]

Answer:

1,15mL = V₂

Explanation:

Based on Charle's law the volume is directely proportional to the absolute temperature in a gas under constant pressure. The equation is:

V₁T₂ = V₂T₁

<em>Where V is volume and T absolute temperature of a gas where 1 is initial state and 2, final state.</em>

The V₁ is 1.23mL

T₁ = 32°C + 273.15 = 305.15K

T₂ = T₁ - 20°C = 285.15K

Replacing:

1.23mL*285.15K = V₂*305.15K

<h3>1,15mL = V₂</h3>

<em />

8 0
2 years ago
Calculate the quantity of energy required to change 8.22 mol of liquid water to steam at 100oc. the molar heat of vaporization o
Ainat [17]
Since  the water  is  at  100 degrees  then   it take  40.6 kj/mol   to  change 1  mole of  water at 100 degrees into  steam at  100  degrees
  the  moles  of water  8.22mol
since  one  mole  take 40.6kj/mol   8.22mol  will  be  =
8.22mol  x  40.6 kj/mol =333.732  kj
 
4 0
3 years ago
In a molecule of methane, carbon (having four valence electrons) binds to four hydrogen atoms. How many lone pairs of electrons
antiseptic1488 [7]
None. To bind with an hydrogem atom, the carbon needs to ''share'' one of it's valence electron's with the hydrogen's valence electron. Therefore, forming 4 bounds means the carbon atom will share it's 4 valence electrons and there will be no lone electrons.
7 0
3 years ago
Other questions:
  • As the block slides down the ramp, what type of energy conversion is occurring?
    15·1 answer
  • What is the change in heat energy when 114.32g of water at 14.85oC is raised to 18.00oC?
    12·1 answer
  • What do scientist measure by using a triple-beam balance
    11·1 answer
  • Which of the following has the least resistance to electric flow? metal
    12·1 answer
  • A 0.51 m aqueous solution of an unknown solute has a boiling point elevation of 0.62°c. The boiling point elevation of a 0.51 m
    10·1 answer
  • A solution is 40.00% by volume benzene (C6H6) in carbon tetrachloride at 20°C. The vapor pressure of pure benzene at this temper
    8·1 answer
  • What are the two reservoirs that contain almost all of Earth's fresh water?
    12·1 answer
  • What did Zoya and her freind do in response
    15·1 answer
  • Which arrangement of electrons is correct? Help please its timed!!!
    12·1 answer
  • There are three isotopes of X element (X):
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!