Hey there!:
Density is the relationship between the mass and the volume of a material, at a given pressure and temperature.
Volume Displacement is now calculated :
Final volume - initicial volume
31.44 mL - 22.69 mL => 8.75 mL
Therefore:
D = m(g) / v (mL )
D = 23.625 / 8.75
D = 2.7 g/mL
Hope that helps!
The equation,P(solution) = X(solvent * P(solvent), can be used to determine vapor pressure lowering. 300 grams of water is 300g x 1 mole/18.0g = 16.67 moles water. Thus, X = 16.67 moles water/17.07 moles total = 0.977 and the new pressure = 0.977 x 740 mm Hg = 723 mm Hg.
Answer:
Antibiotic resistance happens when the germs no longer respond to the antibiotics designed to kill them. That means the germs are not killed and continue to grow. It does not mean our body is resistant to antibiotics.
Answer:
"After 1 half-life there will be 50% of the original isotope, and 50% of the decay product.
After 2 half-lives there will be 25% of the original isotope, and 75% of the decay product.
After 3 half-lives there will be 12.5% of the original isotope, and 87.5% of the decay product.
After 4 half-lives there will be 6.25% of the original isotope, and 93.75% of the decay product." -Stephen Frantz, Former Director of the Reed College Nuclear Reactor
Explanation: