Why is evaporation of water a physical change? In terms of substances, why is evaporation of water a physical change and not a chemical change?

A catalyst - a. causes a reaction. b. increases a reaction's rate. c. has no effect on a reaction. d. raises the temperature for a reaction.

What is the molarity of a 500.0 ml solution containing 0.75 moles of solute?

In this lab, we do not measure the amount of chlorine in the sample, We need the amount of chlorine to determine the formula of the compound.

Sodium chloride reacts with copper sulfate to produce sodium sulfate and copper chloride. 2 upper N a upper C l (a q) plus upper C u Uppe S upper O subscript 4 (a q) right arrow upper N a subscript 2 upper S upper O subscript 4 (a q) plus upper C u

What are dipoles, and what is the difference between a natural dipole and an induced dipole?

A solution of H2SO4 with a molal concentration of 5.25m has a density of 1.266 g/ml. what is the molar concentration of this solution?

An animal that backs on a warm rock during the morning hours but retreats to the shade of the rocks during the middle of the day is mostly likely a (n) A. ectotherm B. endotherm C. vertebrate D. chordate

How much water vapor can a cubic meter of air hold at 25 degrees celcius

When 0.50 L of a 12 M solution is diluted to 1.0 L, what is the resulting molarity?

A 52.9g sample of brass, which has a specific heat capacity of 0.375·J·g-1°C-1, is put into a calorimeter (see sketch at right) that contains 100.0g of water. The temperature of the water starts off at 15.0°C.