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mr_godi [17]
4 years ago
10

Determina la molaridad y normalidad de la solución NaCl a 30°c

Chemistry
1 answer:
Inga [223]4 years ago
8 0
Joke deeeeeeeeeeeeeeemmmm
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60 POINTS + BRAINLIEST !! PLEASE HELP!!
uranmaximum [27]
To get moles. divide mass by molar mass.Molar mass of
Na is 23
and for Cl is 35.5.
the total molar mass of NaCl is 23+35.5 = 58.5mol/gUse the mass and divide by this number30.22g divide by 58.5mol/g and you will get 0.5166 mole.
Since the molecule has 1 Na to 1 Cl, and that the number of moles for NaCL is 0.5166. All of them would be 0.5166molesNa = 0.5166 x 1 = 0.5166molesCl = 0.5166 x 1 = 0.5166moles
to get number of atoms. Multiply your mole by Avogadro number which is 6.022x10^23Na = 0.5166 x 6.022E23 = 3.111x10^23Cl =  0.5166 x 6.022E23 = 3.111x10^23
5 0
4 years ago
The effusion rate of hcl is 43. 2 cm/min in a certain effusion apparatus. What is the rate of effusion of ammonia in the same ap
olga2289 [7]

The rate of effusion of ammonia (NH₃) in the same apparatus is 63.3 cm/min

<h3>Graham's law of diffusion </h3>

This states that the rate of diffusion of a gas is inversely proportional to the square root of the molar mass i.e

R ∝ 1/ √M

R₁/R₂ = √(M₂/M₁)

<h3>How to determine the rate of ammonia (NH₃) </h3>
  • Rate of HCl (R₁) = 43.2 cm/min
  • Molar mass of HCl (M₁) = 1 + 35.5 = 36.5 g/mol
  • Molar mass of NH₃ (M₂) = 14 + (3×1) = 17 g/mol
  • Rate of NH₃ (R₂) =?

R₁/R₂ = √(M₂/M₁)

43.2 / R₂ = √(17 / 36.5)

Cross multiply

43.2 = R₂ × √(17 / 36.5)

Divide both side by √(17 / 36.5)

R₂ = 43.2 / √(17 / 36.5)

R₂ = 63.3 cm/min

Thus, the rate of effusion of ammonia is 63.3 cm/min

Learn more about Graham's law of diffusion:

brainly.com/question/14004529

5 0
2 years ago
A ball was kicked by a player, the ball was stationary, then it gains a velocity of 5 m/s North. Did the ball accelerate or no?
Tomtit [17]

Answer:

yes

Explanation:

it started moving North 5 m/s

7 0
3 years ago
A certain type of decorative lamp contains colored liquids. These liquids form globs that break off and rise to the top of the l
Whitepunk [10]

Answer:

The globs rises due to convection.

Explanation:

Convection is when warmer parts move to the top and the cooler parts move to the bottom.  Since the globs are going to be warmer, they rise to the top.

Hope this helps :D

6 0
3 years ago
highlight why it is important to evaluate important assessment studies before any development could be made on the environment​
Kay [80]

Answer:

Essentially, an EIA is designed to identify the potential risks of a project (e.g., infrastructure development such as a dam) to environmental and human well-being and identify measures to eliminate and/or mitigate these risks. This can be done by replacing and/or modifying planned activities to reduce impacts

Explanation:

6 0
3 years ago
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