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ladessa [460]
3 years ago
11

A chemical formula with 2 or more symbols. is this an element or compound?

Chemistry
2 answers:
ivanzaharov [21]3 years ago
4 0

Answer:

Compound

Explanation:

Compounds are combinations of two or more elements.

Cloud [144]3 years ago
3 0

Answer:

compound

Explanation:

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The movement of molecules across a membrane from an area of high concentration to one of low concentration is best described as:
mestny [16]

Answer:

Difussion

Explanation:

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This movement of particles will be modified according to the length or area of ​​the pipe and the concentration of solute. The greater the difference in solute concentration along the tube, the greater the diffusion

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How many moles of N2 are needed to make 5.0 moles of NH3?
Juli2301 [7.4K]

Answer:

The answer is "2.5 mole"

Explanation:

The reaction for producing NH_3 can be defined as follows:

Reaction:

N_2+ 3H_2 \rightarrow 2NH_3

According to the above reaction, to produce 2 moles of NH_3  we need 1 mole of nitrogen:

So, according to the question to produce 5.0 mole NH_3 the required N_2:

\Rightarrow \ 5.0 \ mole \ of \ NH_3  \times  \frac{1 \ mole\ of \ N_2}{2 \ mole \ of NH_3}\\\\\Rightarrow 5.0 \times \frac{1}{2}\\\\\Rightarrow 2.5\  mole\\

To produce 5.0 mole NH_3  we need 2.5 mole N_2

5 0
3 years ago
If your heart beats an average of 68 times per minute, how many times will your heart beat in an hour? In a day? In a week? Show
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Per day-4080x24=97920
Per week-97920x7=685440
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3 years ago
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