Answer:

Explanation:
It is given that,
Japan is 8817.6 km from California. We need to convert this distance in millimeters.
We know the conversion from km to mm is as follows :
1 km = 1000000
To convert mm km to mm use the unitary method as follows :
8817.6 km = 8817.6 × 1000000

Hence, the distance between Japan and California
.
Answer:
Number of moles = 2.89 mol
Explanation:
Given data:
Number of moles of sugar = ?
Mass of sugar = 990 g
Solution:
Formula:
Number of moles = mass/molar mass
Molar mass of C₁₂H₂₂O₁₁:
12× 12 + 22×1.008 + 16×11 = 342.2 g/mol
Number of moles = 990 g / 342.2 g/mol
Number of moles = 2.89 mol
If the soil reacts with vinegar it's ph level is higher than 6.5
Well. Depends.
You plan on doing a school project?
You should try baking soda and vinegar, almost everyone knows about this.
Orr you can use mentos and soda.
Or for fun, just get a watermelon or any fruit and use rubber bands all around it until it goes BOOM!
Hope this helps :D