7kg of lead can safely be dissolved in 1000 kg of water.
<h3>What is ppm ?</h3>
It is a unit of measurement of concentration , also known as parts per million.
Amount of solute in 1 million parts of solution
1ppm = 1mg/kg
The maximum permitted level is 7ppm
This means 7mg /kg
For 1000 kg of water = 7000mg lead = 7kg of lead is permissible.
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I can only clearly see #5.
A mile has 5,280 feet.
Divide 18,472 by 5,280.
18,472 / 5,280 = 3.5
18,472 feet is about 3.5 miles.
Answer:
Mean=43 Median=44
Step-by-step explanation:
To find the median add up all the numbers and divide by however many numbers there are. To find the median look at the middle number if there is not one then add the two in the middle and divide by two. Hope this helps
There were 4 terms in that expression