How much heat is evolved when 22.5 grams of a food sample changes the temperature of 0.42 kg of water by 4.4 degree C. Assume specific heat to be 4.18 J/g/C

Show a numerical setup for calculating the number of moles in the sample of CaCO3

An alpha particle is made up of A. two protons and two electrons B. two electrons only C. two protons and two neutrons

A chemist prepares a solution of sodium thiosulfate (Na2S203) by measuring out 110. g of sodium thiosulfate into a 350. mL volumetric flask and filling the flask to the mark with water.

The density of water at 40°c is 0.992 g/ml. what is the volume of 3.45 g of water at this temperature?

Explain whether smoke filling up a room is diffusion or not

What element has the electron arrangement 2,8,4?

If you get pregnant in Dec how long will it take for u to get to second trimester

Name the following compound HClO

Aluminum and Oxygen gas will react to form Aluminum Oxide (Al2O3). When the equation is balanced, How many moles of Al2O3 are formed when a mixture of 0.36 moles Al is ignited? a. 0.12 b. 0.18 c. 0.28 d. 0.46

Which state of the West produces the widest varieties of fruits, vegetables, and nuts? A) California B) Colorado C) Wyoming D) Alaska