2,3,7,10,13 i did this yesterday can u mark me brainliest
1.000.000 is the correct answer
it allows plants to survive and continue to reproduce
Answer:
20ppm
Explanation:
parts per million are defined as the mass of solute in mg (In this case, mass of DDT) per kg of sample.
To solve this question we must find the mass of DDT in mg and the mass of sample in kg:
<em>Mass DDT:</em>
0.10g * (1000mg / 1g) = 100mg
<em>Mass sample:</em>
5000g * (1kg / 1000g) = 5kg
Parts per Million:
100mg / 5kg =
<h3>20ppm</h3>
It should remain constant because of the law of conservation of mass and because the flask is sealed no mass will escape
