What is the difference between a mixture and a substance

An optically active alkyne A (C10H14) can be catalytically hydrogenated to butylcyclohexane. Treatment of A with C2H5MgBr liberates no gas.

You are experimenting on the effect of temperature on the rate of reaction between hydrochloric acid (HCl) and potassium iodide (KI). When the reaction is completed at 400K there are approximately 250,000 collisions per mole of reactant.

What is the meaning of the word Polar (science) in your own words? What is the meaning of the word Polar Covalent bond (science) in your own words?

44. Convert the following. Express your answers in scientific notation. a. 7.5 X 104 J to kilojoules b. 3.9 X 105 mg to decigrams C. 2.21 x 10-4 dL to microliters . 1 , 1 10

3. How many milliliters of water are there if the mass of the water is 34.228 g at STP?

What is the mass of 3.75 moles of NaCI? (Na = 22.99g/mol, CI = 35.45 g/mol)

Convert to grams 0.100 moles of Co2

In order to use the value 22.4 L for molar volume in a mass-volume or volume-mass stoichiometry problem, the gas must be assumed to be at STP. A. True B. False

The gravitational attraction between two objects would increase if both masses are

If the pH indicator bromothymol blue was added to the nitric acid solution, it's colour would be?