Answer and step-by-step explanation:
1. The initial mass of the popcorn kernels will be the mass of the beaker + oil + 20 kernels before heating minus the mass of just the beaker + oil.
98.3g - 95.3g = 3.0g
2. The final mass of the popcorn kernels will be the mass of the beaker + oil + 20 kernals after heating minus the mass of just the beaker + oil.
97.5g - 95.3g = 2.2g
3. To calculate the percentage of water in the popcorn you follow the given formula.
[tex]\frac{3.0g-2.2g}{3.0}[/tex] × 100 = 26.7% H2O
