2 years ago

Suppose you were writing a summary of the article. Which of these will be most important to put in the summary?

Chemistry

1 answer:

NISA [10]2 years ago

5 0

Which of what? I don’t see a picture.

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When lithium nitride, Li 3 N ( s ) , is treated with water, H 2 O ( l ) , ammonia, NH 3 ( g ) , is produced. Predict the formula

allochka39001 [22]

Answer : The formula of the gas produced is, $PH_3$ (phosphine gas)

Explanation :

According to the question, when sodium phosphide is treated with water then it react to give phosphine gas and sodium hydroxide.

The balanced chemical reaction will be:

$Na_3P(aq)+3H_2O(l)\rightarrow PH_3(g)+3NaOH(aq)$

By Stoichiometry of the reaction we can say that:

1 mole of sodium phosphide reacts with 3 moles of water to give 1 mole of phosphine gas and 3 moles of sodium hydroxide.

Thus, the formula of the gas produced is, $PH_3$ (phosphine gas)

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3 years ago

Description of how the combined gas law must be modified to introduce the number of moles

telo118 [61]

So the ideal gas law is pv=nrt
The letter n stands for the number of moles. divide both side by rt to isolate.
pv/rt=n

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3 years ago

18. When a chemical reaction takes place in an open system, matter_____.

zheka24 [161]

A) can enter from the surroundings, but cannot escape to the surroundings

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3 years ago

Read 2 more answers

A single 250 gram

Gala2k [10]

2.2 x 10^-2

0.055 / 250 = 0.00022 - This would be 2.2 x 10^-4, but the question is asking for percent, not proportion, so multiply by 100% to get the percentage.

0.00022 * 100% = 0.022% = 2.2 * 10^-2

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3 years ago

Can you identify some techniques in separating mixtures? In what

olga55 [171]

Answer:

Boiling

Filtration

Distillation

Evaporation

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3 years ago