I think A is correct:
deltaH=(Enthalpie of reactents)-(Enthalpie of products)=110.525+285.5-393.5=2.525~2.825
Physical properties of a bag of microwaveable popcorn are the mass of it, the color of it, the size of it, and the weight of it. Two chemical properties of a bag of microwavable popcorn are it changed from seeds to popcorn and it popped.
350 nm because the magnesium reacts very aggressively toward these kind of situations.
The correct answer is option A
The temperature on the earth increased most during the Mesozoic era when an asteroid wiped off the dinosaur and mass extinction of animals took place at that time. The temperature of the the earth suddenly increased at that time due to crashing of asteroid on earth and led to the destruction of animals from the earth.
Answer: 19.6%
Explanation: percent by mass =
100 × ((mass of solute (g)) ÷ (mass of solute + mass of solvent (g)))
100 × ((22.0gHCl) ÷ (22.0gHCl + 90.0gH20)) = 19.6%
