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Thepotemich [5.8K]
3 years ago
7

How many grams is needed to make the following solution?

Chemistry
1 answer:
Lisa [10]3 years ago
3 0

Answer:

c

Explanation:

yxyyyxyxxyxxy yy y gg ff ff d d f t r rr rr rr rr r r t tt t

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Explain the following terms Sublimation
weqwewe [10]

Answer:

Sublimation is the transition of a substance directly from the solid to the gas state, without passing through the liquid state. ... The reverse process of sublimation is deposition or desublimation, in which a substance passes directly from a gas to a solid phase.

8 0
3 years ago
Which of the following groups consists of reactive p-block elements?
Lapatulllka [165]
<span>d. group 3a  is your correct answer</span>
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3 years ago
The Haber process for the production of ammonia is the main industrial process of producing ammonia today. Prior to developing t
Schach [20]

Answer:

Equilibrium constant for the reaction at 25⁰C = 1.81 x 10⁻⁶

Explanation:

                            Reaction for the Haber's process

                              N₂(g) + 3 H₂(g) ⇌ 2 NH₃(g)

Free energy change of reaction

                    ΔGr° = ∑products free energy - ∑reactants free energy

                             = 2 x (- 16.4) - 0

                             = - 32.8 KJ / mole

Equilibrium constant for this reaction at 25⁰C

                           ΔGr° = - 2.303 RT log K

                      ⇒  log K = \frac{-32.8}{2.303 X8.314X10^{-3}X 298 }

                      ⇒        K = Anti log( -5.74) = 1.81 x 10⁻⁶

6 0
4 years ago
The half-cell is a chamber in the voltaic cell where one half-cell is the site of the oxidation reaction and the other half-cell
raketka [301]
Start by writing a simplified reaction sequence between the two elements. For this, we need some electric potential values, which you can find in a table. Adjust based on the source that you are given, because they will differ just a little.

For the reactions, using a reductions table:

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Ag+ + e- —> Ag0. E=0.8

Because Ag+ has a larger E value, the Ag+ will oxidize Cd0 in the following reaction:

3Ag+ + Cr0 —> 3Ag0 + Cd3+

(Notice that three Ag’s are used to work for the transfer of three electrons.)

At the anode, the item in solution is oxidized so that electrons are left behind. This means that the reaction occurring at the anode is the Chromium reaction, and it looks like this:

Cr0(s) —> Cr3+(aq) + 3e-
6 0
3 years ago
Define atomic number and atomic mass
Akimi4 [234]

Answer:

Atomic number ---> number of protons in the nucleus of an atom

Atomic mass ----> the total mass of protons, neutrons, and electrons in an atom

3 0
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