Answer:
Number of moles = 2.8 mol
Explanation:
Given data:
Number of moles of water = ?
Volume of water = 50 mL
Density of water = 1.00 g/cm³
Solution:
1 cm³ = 1 mL
Density = mass/ volume
1.00 g/mL = mass/ 50 mL
Mass = 1.00 g/mL× 50 mL
Mass = 50 g
Number of moles of water:
Number of moles = mass/molar mass
Number of moles = 50 g / 18 g/mol
Number of moles = 2.8 mol
Boron has 5 protons, 5 electrons and 6 neutrons for the most common isotope. This determines that it has a neutral charge.
A. The sun is causing evaporation.
Answer:
d
Explanation:
it's basic chemistry. electrons are negative and travel around the outside. neutrons are neutral and in the nucleus with the proton
True!
Energy can change from Potential to Kinetic and so on.
This is actually called energy transformation!