I believe it is less dense.. that is why ice floats on water
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>
Answer:
C6H12 (g) + 9 O2 (g) → 6 CO2 (g) + 6 H2O (l)
Explanation:
Nitrogen has 5 valence electrons.
50 degrees, the angle of incident is always equal to the angle of reflection
