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3 years ago

Can you help me out plz and thank u

Chemistry

1 answer:

Nonamiya [84]3 years ago

5 0

Answer:

stirring

Explanation:

when you stir it spreads the item out more to be fully covered and dissolve faster. like putting sugar in tea, if you don' t stir it wont dissolve fast

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Element Name: Oxygen,

White raven [17]

Answer:

Element Name: Oxygen

Symbol: O

What is the Mass: 15.999 u

Protons: 8

Neutrons:10

Electrons: 8

Ion or Isotope: Oxide

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3 years ago

Number 4 Please Help!!!!

Dominik [7]

Answer: c i think

Explanation:

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3 years ago

Which of the following is true regarding the law of conservation of mass?

nexus9112 [7]

A is correct................

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3 years ago

True or False

Darina [25.2K]

The answer would be true

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3 years ago

Calculate the change in the standard entropy of the system, delta s degree for the synthesis of ammonia from N_2(g) and H_2(g) a

Svet_ta [14]

Answer:

$\Delta S^{0}$ for the reaction is -198.762 J/K

Explanation:

$N_{2}(g)+3H_{2}(g)\rightarrow 2NH_{3}(g)$

Standard change in entropy for the system ( $\Delta S^{0}$ ) is given by-

$\Delta S^{0}=[2moles\times S^{0}(NH_{3})_{g}]-[1mole\times S^{0}(N_{2})_{g}]-[3\times S^{0}(H_{2})_{g}]$

where $S^{0}$ represents standard entropy.

Here $S^{0}(NH_{3})_{g}=192.45J/(K.mol)$ , $S^{0}(N_{2})_{g}=191.61J/(K.mol)$ and $S^{0}(H_{2})_{g}=130.684J/(K.mol)$

So, $\Delta S^{0}=[2\times 192.45]-[1\times 191.61]-[3\times 130.684]J/K=-198.762J/K$

3 0

3 years ago

Can you help me out plz and thank u​

Can you help me out plz and thank u