An empty container weighs 80.21 g. It is filled with 20.14 mL of an unknown liquid, and the total weight of the container and liquid is 105.22 g. What is the density of the liquid? a. 0.8053 g/mL
b. 1.242 g/mL
c. 5.224 g/mL
d. 3.983 g/mL

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?

If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?

The mass of the sun is 1.99×1030kg and its distance to the earth is 1.50×1011m. what is the gravitational force of the sun on the earth?