One mole of Na2SO4 is 6.022 * 10^(23) molecules. We can divide this into the quantity in the question to find a value of 1.5/6.022 = 0.2491 moles. Rounded to two significant figures and put in scientific notation, we can rewrite this quantity as 2.5 * 10^(-1) moles
Ionic bonds are formed from the attraction of oppositely charged ions in a chemical compound
Answer:
Percent yield of alum is 38.6%
Explanation:
Find attached calculations for detailed explanation.
Friction <span>is most responsible for slowing a bicycle down when the brakes are applied</span>
Answer:
When popcorn is popped, liquid inside the kernel is changed to steam. Pressure from the steam builds up inside the kernel. When the pressure reached a critical stage the kernel pops turning itself inside out. This is a physical change.
Explanation: