Answer:
Rutherford overturned Thomson's model in 1911 with his well-known gold foil experiment, in which he demonstrated that the atom has a tiny, high- mass nucleus. In his experiment, Rutherford observed that many alpha particles were deflected at small angles while others were reflected back to the alpha source.
Answer:
Explanation:
<u>1, Formula</u>
- Mass percent = (mass of solute/mass of solution) × 100
<u>2. Determine mass of solution</u>
Substitute the data and clear the mass of solution:
- 3.5 = (3.0g / mass of solution) × 100
- 0.035 = 3.0g / mass of solution
- mass of solution = 3.0 g / 0.035
- mass of solution = 85.714g
<u>3. Determine the mass of solvent:</u>
- mass of solvent = mass of solution - mass of solute
- mass of solvent = 85.714g - 3.0g = 82.714g
Round to two significant figures: 83 g
Answer: The amount of water formed is 12 moles
Explanation: Please see the attachments below
<span>It contains all necessary parts of an atom, but the energy levels are portrayed incorrectly</span>
Answer:
The splash cause the volume of the block to be too high
Explanation:
This is because, from the previous measurement made by the student, the volume of the block is 5.7ml higher.
