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
rewona [7]
3 years ago
9

Please Help ASAP!! Marking Brainliest!

Chemistry
1 answer:
Galina-37 [17]3 years ago
6 0

Answer:

If they are pushing off the wall, it would be B, as they are going faster. If they are slowing down, it would probably be A, gradually getting slower.

Explanation:

You might be interested in
Which mixture can be separated based on differences in particle size of the components?
Aleksandr [31]
Heterogenous mixtures can separates due to differences in size of components
7 0
3 years ago
If the farmer had weighed out 32.0 pounds of chicken eggs rather than kilograms what mass of quail eggs would he need to weigh o
Ira Lisetskai [31]
To have 35 pounds of quail eggs, he would need 14.5 kilograms 
1 pound= .45 pounds
8 0
2 years ago
If an ideal gas has a pressure of 5.49 atm, a temperature of 88.78 °c, and has a volume of 22.03 l, how many moles of gas are in
kirza4 [7]
N = (PV)/RT
(T = 88.78 + 273 = 361.78K)
(R = 22.4/273 = 0.082)
= (5.49 x 22.03)/(0.082 x 361.78) = ?
Put it into the calculator. It's hard to do that on a mobile phone.
7 0
3 years ago
Select the correct answer.
oksian1 [2.3K]

Answer:

OB

Explanation:

4 0
3 years ago
Read 2 more answers
Nitrogen effuses through a pinhole 1.7 times as fast as another gaseous element under the same conditions. Estimate the other el
marysya [2.9K]

Answer:

80.92, Krypton

Explanation:

<u>What is effusion?</u>

• It is a process where gas escapes through a pinhole (a very small hole) into a region of low pressure or vacuum

<u>Graham's law of effusion of </u><u>gas</u>

• states that at a given constant temperature and pressure, the rate of effusion of gases is inversely proportional to the square root of their molar masses

\boxed{ \frac{Rate_1}{Rate_2} =  \sqrt{ \frac{M_2}{M_1} } }

<u>Calculations</u>

Nitrogen exist as N₂ at room temperature, thus its molar mass is 2(14)= 28.

Let the rate and molar mass of unknown gas be Rate₂ and M₂ respectively.

Since N₂ effuses 1.7 times as fast as the unknown gas,

Rate₁= 1.7(Rate₂)

\frac{Rate_1}{Rate_2} = 1.7

1. 7 =  \sqrt{ \frac{M_2}{28} }

Square both sides:

2.89  = \frac{M_2}{28}

Multiply both sides by 28:

2.89(28)= M₂

M₂= 80.92

<u>Identity of </u><u>gas</u>

The molar mass of 80.92 lies between Bromine and Krypton. However since Bromine exist as Br₂, the value of it's molar mass would be 159.8 instead. Hence, Bromine is eliminated.

If the gas is a diatomic element, the atomic weight is 80.92 ÷2= 40.46. Thus, we are now considering if Argon could be its identity. However, Argon is a noble gas and will not exist as a diatomic element. Argon is therefore eliminated too.

Thus based on the above reasoning, its probable identity is Krypton.

7 0
2 years ago
Other questions:
  • What is 10.0056 g/mol rounded to 3 significant figures
    9·1 answer
  • Why is acid base titration a useful technique in chemistry
    10·1 answer
  • What is the element present for copper
    6·1 answer
  • Two atoms have the electron configurations 1s2 2s2 sp6 and 1s2 2s2 2p6 3s1. The first ionization energy of one is 2080 kJ/mol an
    5·1 answer
  • Cindy runs 2 km every morning. She takes 2 minutes for the first 250 meters, 4 minutes for the next $1, 000 meters, one minute f
    9·1 answer
  • how many grams of oxygen reacted with 50.7f of potassium? how many molecules of potassium oxide are formed?​
    9·2 answers
  • An element in Group 16 on the Periodic Table would most likely bond with which of the following
    6·1 answer
  • Please help!!! will give 25 points!
    13·1 answer
  • Suggest an alternative to zinc oxide that could react with hydrochloric acid to give you the desirable product.
    12·1 answer
  • What type of bond involves the unequal sharing of electrons.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!