Jenavius placed a marshmallow in the microwave to make a smore for desert. the marshmallow expanded when it was heated. how can you best describe why this happened? a) as the marshmallow was heated the particles moved faster increasing its volume. b) as the marshmallow was heated the particles moved faster decreasing its volume. c) as the marshmallow was heated the particles moved slower increasing its volume. d) as the marshmallow was heated the particles moved slower decreasing its volume.

A) As the marshmallow was heated the particles moved faster increasing its volume.

Explanation: When heat is supplied to the marshmallows, the kinetic energy of the marshmallows increase and thus they start moving randomly and thus the molecules occupy more volume and volume increases.

As we know kinetic energy is directly related to temperature, thus as temperature is increased, the kinetic energy of the molecules also increase.

R = gas constant

T= temperature

answer: 802.3 kilo joules of energy represents 191.75 kilo calorie of energy.

explanation:

energy released during combustion of one mole methane = 802.3 kilo joules

if 1 kilo joule = 0.239006   kilo calorie

then ,802.3 kilo joule will be = 802.30.239006 kilo calorie

802.3 kilo joule = 191.75 kilo calorie

hence, the energy in kilo calorie is 191.75 kilo calorie.

be subject to a force andchange its motion