Answer:
0.085 kg
Explanation:
1 g=0.001 kg OR 1 kg=1000 g
so 
=0.085 kg
Answer:
D.
Explanation:
I just got it right in the test :)
<u>Answer:</u>
photoelectric effect and the modifications to the Rutherford model is necessary
<u>Explanation:</u>
Photoelectric effect refers to emission of electrons when a light of certain frequency falls into a metal surface or a metal atom.
Rutherford, through his alpha particle scattering experiment, proposed the emission of electrons, in which he used a thin gold foil and high energy alpha particle were directed to the foil. He suggested that any light can emit electron from any metal surface.
Answer:
2.40 × 10²³ Atoms of Hydrogen
Solution:
The number of hydrogen atoms in C₃H₈O₃ are calculated as;
As, there are eight hydrogen atoms per molecule of C₃H₈O₃, therefore the number of hydrogen atoms per mole of C₃H₈O₃ are calculated as;
1 mole C₃H₈O₃ contains = 6.022 × 10²³ Molecules of C₃H₈O₃
So,
0.05 mole C₃H₈O₃ will contain = X Molecules of C₃H₈O₃
Solving for X,
X = (0.05 × 6.022 × 10²³) ÷ 1
X = 3.011 × 10²² Molecules of C₃H₈O₃
As,
1 Molecule of C₃H₈O₃ contains = 8 Atoms of Hydrogen
So,
3.011 × 10²² Molecules of C₃H₈O₃ will contain = X Atoms of Hydrogen
Solving for X,
X = (3.011 × 10²² × 8) ÷ 1
X = 2.40 × 10²³ Atoms of Hydrogen
