Which of the following is not an example of a chemical change?

What is the relationship between an object's height above the ground and its gravitational potential energy?

What is it called when grouping items that are alike in some way

An oxybromate compound, kbrox, where x is unknown, is analyzed and found to contain 43.66 % br.

In the bromination reaction of trans -cinnamic acid, a student started with 300 mg oftrans -cinnamic acid and excess bromine. They then obtained 240 mg of pure2,3-dibromo-3-phenylpropanoic acid.

Determine the theoretical yield of HCl if 60.0 g of BCl3 and 37.5 g of H2O are reacted according to the following balanced reaction. A possibly useful molar mass is BCl3 = 117.16 g/mol. BCl3 (g) + 3 H2O (l) → H3BO3 (s) + 3 HCl (g)

Which would be most likely be the pH of a highly-corrosive acid? a) 1 b) 5 c) 8 D) 11

The unit cell of amazonite is made of three pairs of faces, each pair different from the others. The faces are oriented at angles to one another that are not 90 degrees.

An aqueous solution at 25∘C has a hydronium ion concentration of 3.2*10-9 M. What is the hydroxide ion concentration of the solution? Write your answer in scientific notation. Use the multiplication symbol rather than the letter x in your answer.

What is the electron configuration of a sulfur atom in the ground state?

Unsaturated fatty acids are often classified according to the number of carbon atoms between the terminal methyl carbon (the omega carbon) and the closest double bond to the methyl end of the chain.