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
arsen [322]
3 years ago
5

Nitrogen gas effuses through an opening 1.59 times faster than an unknown gas.

Chemistry
1 answer:
Elodia [21]3 years ago
5 0
A) Nitrogen has an ATOMIC mass number of 14, but nitrogen gas consists of N₂ molecules, so the mass to use in this problem is 28 g/mol. Rates of effusion ∝ 1/√(mass), so 

<span>√(mass unknown) /√28 = (rate N₂ effusion)/(rate unknown effusion) = 1.59 </span>
<span>∴ mass unknown = (1.59)²(28) = 70.78 g/mol </span>

<span>B) One possible gas that comes close for this mass is NF₃.</span>
You might be interested in
Please helpp!! I give brainliest!
ANEK [815]

Answer:

just because of the air

Explanation:

big / the answer is volume stays the same

4 0
2 years ago
Read 2 more answers
How many total atoms are in 1 mole of H2O?
Licemer1 [7]

Answer:

1.806 x 10^24 atoms total

Explanation:

3 0
2 years ago
__ Cu + ___ HNO₃ → ___ _Cu(NO₃)₂ + ___ NO₂ + ___ H₂O
ivolga24 [154]

Answer:

Cu + 4HNO3 --->   Cu(NO3)2 + 2NO2 + 2H2O.

Explanation:

Balancing:

Cu + 4HNO3 --->   Cu(NO3)2 + 2 NO2 + 2H2O.

3 0
3 years ago
Read 2 more answers
How many calories of heat are necessary to raise the temperature of 319.5 g of water from 35.7 °C
rjkz [21]

20600Cal              

Explanation:

Given parameters:

Mass of water = 319.5g

Initial temperature = 35.7°C

Final temperature = 100°C

Unknown:

Calories needed to heat the water = ?

Solution:

The calories is the amount of heat added to the water. This can be determined using;

     H  =   m  c Ф

c  = specific heat capacity of water = 4.186J/g°C

   H is the amount of heat

    Ф is the change in temperature

    H = m c (Ф₂ - Ф₁)

    H = 319.5 x 4.186 x (100 - 35.7) = 85996.56J

Now;

     1kilocalorie = 4184J

     

85996.56J to kCal; \frac{85996.56}{4184}   = 20.6kCal  = 20600Cal

               

learn more:

Specific heat brainly.com/question/3032746

#learnwithBrainly

6 0
3 years ago
Helppppp with this pleasee
vazorg [7]

Answer:

A. 1, 2, 5

Explanation:

Count the number of Ns in the formula.

- Hope that helped! Please let me know if you need a further explanation.

3 0
3 years ago
Other questions:
  • If the distillation is performed in full as described in the experimental procedure (including the redistillations of fractions
    11·1 answer
  • The first living things to live in an are are*
    15·1 answer
  • Consider the following equilibrium:H2CO3(aq) + H2O(l) H3O+(aq) + HCO3-1(aq).What is the correct equilibrium expression?
    8·1 answer
  • What mass of hydrogen gas would be produced if 46g of sodium was reacted with water?
    6·1 answer
  • What would be one way to reduce the amount of a gas dissolved in water?
    8·1 answer
  • Find the volume of a sample of aluminum if its density is 2.699 g/cm3 and its mass is 26.0g?
    7·1 answer
  • Consider these two entries from a fictional table of standard reduction potentials.
    6·1 answer
  • An animal cell placed in a hypertonic solution will shrink in a process called crenation. An animal cell placed in a hypotonic s
    11·1 answer
  • GIVING BRAINLY AND 20 POINTS
    11·2 answers
  • What three types of noncovalent bonds help proteins fold?.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!