3 years ago

What is the new volume when the pressure of 20 milliliters of an ideal gas decreases from 202 kPA to 101 kPA?

Chemistry

1 answer:

Lana71 [14]3 years ago

6 0

Ideal Gas Law Formula.

Brainliest?

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When might a technique called water displacement be used?

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To find the volume of a irregular object

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3 years ago

Which of the following would a chemist be most likely to study? A. what happens when a moving car comes to a stop B. what happen

Liono4ka [1.6K]

Answer:

B. what happens when iron rusts in the presence of water

Explanation:

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3 years ago

The starting substanceses of a chemical reaction are refered to as

Debora [2.8K]

The starting substances in a chemical reaction are called reactants - they are written on the left side of a chemical equation.

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Consider the cell pt | h2 (1 atm); h+ (? m) || hg2cl2(s); cl− (1 m) | hg 2 h+ + 2 e − → h2 e 0 = 0.00 v hg2cl2 + 2 e − → 2 hg +

Dmitry [639]

Answer:

1.39

Explanation:

[Hg2Cl2]= 1M

[H^+] = ????

E°cell= 0.35V

E= 0.268 V

Therefore E for the reaction must -0.082 V

n= 2 moles of electrons

From Nernst Equation:

E= E°cell- 0.0592/n log [Red]/[Ox]

0.0268= 0.35- 0.0592/2 log 1/[Ox]^2

-0.082= -0.0296 log 1/[Ox]^2

log 1/[Ox]^2= 0.082/0.0296

log 1/[Ox]^2= 2.77

1/[Ox]^2=Antilog (2.77)

[Ox]^2=1.698×10^-3

[Ox] = 0.0412 M

But pH= -log [H^+]= -log(0.0412)= 1.385

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3 years ago

Read 2 more answers

Elena held a rock weighing 1 N in her hand. The rock has no velocity. <br> KE________?

nignag [31]

KE = 0

<h3>Further explanation </h3>

Energy is the ability to do work

Energy because its motion is expressed as Kinetic energy (KE) which can be formulated as:

$\large{\boxed{\bold{KE=\frac{1}{2}mv^2}}}$

So for two objects that have the same speed, the greater the mass of the object, the greater the kinetic energy

The stone in hand is in a motionless state (at rest) so that its velocity (v) = 0, so it has no kinetic energy

But this stone can have <em>potential energy that is gained due to its height</em>

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3 years ago