A- the CH3 group
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The material medium for propagation (here, the water) enables the sound waves to travel and reflect back to the reciever (reflection known as echo in which the sound is reflected back due to a distant obstacle).
Answer:
Copper is more reactive and higher in the activity series
Explanation:
Copper is able to replace the silver in a replacement reaction because it is more reactive and higher in the activity series.
Substances or ions that are higher in the activity series are typically more reactive than those ones below them.
In like manner, they are able to replace the lowers ones in a chemical reaction due to their higher reactivity potential.
A less reactive element and a lower one in the activity series cannot displace a higher one in the series.
Answer:
40,320 minutes
Explanation:
4 weeks= 4× 7 → 28 days
<em><u>So, Minutes in a month are:</u></em>
28days× 24hours× 60minutes = 40,320 minutes.
Cholesterol is an example of a lipid.
