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

How many moles of 0.225 M CaOH2 are present in 0.350 L of solution? Calculate the number of moles of solute (CaOH2) (M CaOH2) (0.350 L) = mol CaOH2

What law did you use to solve this problem? Imagine that you fill a balloon at sea level (1.0 atm) with 18 L of air. You are taking the balloon to Denver, Colorado, for a birthday party.

An isotope of the element gallium has a mass of 71 and an atomic number of 31. the number of electrons, protons, and neutrons respectively in a neutral atoms of this isotope is

14C → 14N Describe the type of radioactive emission produced from the decay of carbon-14 to nitrogen-14 and predict its reaction to an electric field. A) Radioactive gamma decay is produced by the reaction.

10 rules to follow in a science lab

An estser is the reaction product between: a. Alcohol and organic acid B. Alcohol and oxygen C. Ketones and Oxygen. D. Aldehydes and Alcohol

How is the way a mixture is combined different from how a compound is combined?

Consider n2 (g) + 3h2 (g) →→ 2nh3 (g). what is the mass of nitrogen gas required to react with 0.129 g h2?

Write a sentence that uses the words "mass extinction" correctly

Which description is not a property of an acid? A turns litmus paper red B bitter taste C corrosive D dissolve metals