Answer:
Explanation:
mass = 400 grams * [1 kg/1000 grams] = 0.400 kg
c = 387 Joules / (oC * kg)
Δt = 55 - 30 = 25 oC
E = m*c * Δt
E = 0.4 * 387 * 25
E = 3870 Joules
Given an unknown mixture consisting of two substances, a scientist can determine whether a specific mixture is a true solution, a colloid, or a suspension by passing a light through the mixture. They are distinguished by the Tyndall Effect. If the mixture is a solution, light just pass through the mixture. The light does not reflect. If the mixture is a colloid, then light is dispersed or reflected due to the colloidal particles. If the mixture is a suspension, light cannot pass through.
Answer:
Boiling and evaporating
Explanation:
Its loosing water just trust
Answer:
4
Explanation:
4moles of Fe reacts =2moles of Fe2O3
8moles of Fe reacts=x moles of Fe2O3
cross multiply
4★X=8★2
X=16/4
X=4
Potential energy was high at the top of the ramp and kinetic energy increased while the skater went down the ramp. At the bottom of the ramp the potential energy went away. This is because kinetic energy is energy that a moving object has whereas potential is stored energy due to its position.