Biology is a natural science concerned with the study of life and living organisms. please let me know if correct
Answer:
The numer of molecules is 9, 03 x 10 ^ 23 molecules. See the explanation below, please.
Explanation:
We use the number of Avogadro:
1 mol------- 6, 02x 10 10 ^ 23 molecules
1, 5mol ---x = (1, 5 mol x6, 02x 10 10 ^ 23 molecules)/ 1 mol=
x= 9, 03 x 10 ^ 23 molecules
Answer:
2 half-lives=0.8
6 half-lives= 0.05
Explanation
Half-lives are constant and always decrease by half, implying that the concentration decreases by half at a consistent rate.
3.2/2= 1.6/2= 0.8 is two half-lives
3.2/2= 1.6/2= 0.8/2= 0.4/2= 0.2/2= 0.1/2=0.05 is six half-lives
Answer:
The freezing of water into ice causes the cracks to widen because it occupy more space.
Explanation:
When the water change its state of liquid to solid state due to decrease in temperature, it contracts means occupy less space but when the temperature reaches to 4 degree Celsius, it starts to expand. When the temperature goes below 0 degree Celsius, it will cause more expansion and occupy more space that causes the cracks to widen.
