Answer:
True, there’s Prokaryotic and Eukaryotic
Explanation:
Eukaryotic are more complex and HAVE a nucleus, Prokaryotic are less complex and don’t have a nucleus
Answer:
c = .137 J/g
Explanation:
q = mcΔT, where q=heat, m=mass, c=specific heat, ΔT=change in temp.
q = 96 J
m = 35 g
c = ?
ΔT = Tfinal - Tinitial = 313 - 293 K = 20 K
q = mcΔT
96 = 35c*20
96 = 700c
<u>c = .137 J/g</u>
Answer:Thompson-plum pudding model of the atom
Rutherford- planetary model of the atom
Bohr- Quantization of energy levels in the atom
Explanation:
Thompson postulated the atom to be a sphere of negative charges into which positive charges were embedded. He discovered electrons. Rutherford discovered the nucleus and protons. Bohr first postulated the idea that electronic energy levels are quantized.
The correct answer I believe is D.)
Answer:
The correct answer is 399.8 ppm
Explanation:
A concentration in parts per million (ppm) is equal to:
Solute: Cd; Mass = 180 mg x (1 g/1000 mg) = 0.18 g
Solvent: Water ; Mass= 450.0 g x (1 kg/1000 g) = 0.45 kg
We have the following total mass of solution:
Mass of solution = Mass of solute + Mass of solvent = 0.18 g + 450 g = 450.18 g = 0.45018 kg
Finally, we divide the <u>mass of solute (in mg)</u> into the <u>mass of solution (in kg)</u> to obtain the ppm (in mg/Kg):
ppm = 180 mg/0.45018 kg = 399.8 mg/Kg = 399.8 ppm