Which of these represents a physical change? a iron rusting b ice melting c wood burning d food spoiling

An achiral hydrocarbon A of molecular formula C7H12 reacts with two equivalents of H2 in the presence of Pd-C to form CH3CH2CH2CH2CH (CH3) 2. One oxidative cleavage product formed by the treatment of A with O3 is CH3COOH.

Calculate these volumes. (a) what is the volume of 25 g iodine, density = 493 g/cm3 (b) What is the volume of 3.28 g gasoous hydrogen, density = 0.089 g/L?

Is a Big Mac an element, compound, or mixture?

Which phrase describes a volcano that is not expected to erupt again? quiet volcano extinct volcano dormant volcano explosive volcano

An atom that has lost or gained electrons is known as an ion. Which compound below is made up of ions?

Our body solution tests at a pH of about 6.8. This pH is:

A diatomic gas has the molar mass of 38.00g/mol. what is the possible formula?

Which of the following is the final concentration of KCl if 500 ml of 0.25 M KCl is diluted to a final volume of 5 L? 0.025 L 0.0025 L 25 L 2.5 L

What do you use to measure mass

A salt shaker filled with 17.0g sodium chloride contain how many moles?