Which is not a piece of evidence that most scientists use to prove the origin of our universe? a. Movement of the galaxies
b. cosmic microwave background radiation
c. presence of hydrogen and helium in the correct percentages
d. The contraction of objects in space

The energy released by a chemical reaction can be measured using a calorimeter. when barium hydroxide octahydrate crystals are reacted with dry ammonium chloride inside of a coffee cup calorimeter, the temperature of the 18.00 g of water in the calorimeter decreases from 30.0°c to 8.0°c. the equation for calculating energy absorbed or released by a reaction is: where q is the energy released or absorbed, m is the mass of water in the calorimeter, cp is the specific heat of water, and δt is the observed temperature change. if the specific heat of liquid water is 4.19 j/g·°c, how much energy was absorbed by the reaction?

What is the rate of 12 liters of water moving through a water hose in 4.0 minutes?

The movement of electrons between atoms is called an