Explain how a catalyst affects the activation energy for a chemical reaction

Which is a saturated solution? 1) 40g NH4Cl in 100g water at 50 degrees celcius 2) 2g SO2 in 100g water at 10 degrees celcius 3) 52g KCL in 100g water at 80 degrees celcius 4) 120g KI in 100g water at 20 degrees celcius

Which technique is used to compare ink on a suspect document? A) thin-layer chromatography B) infrared spectrophotometry C) blotting with alcohol method D) ultraviolet spectrophotometry

What is the mass of air occupying the same volume? The density of air at room temperature is 1.20 g/L.?

Using the Brønsted-Lowry concept of acids and bases, identify the Brønsted-Lowry acid and base in each of the following reactions: HSO3 - (aq) + H2O (l) →H2SO3 (aq) + OH - (aq) (CH3) 3N (g) + BCl3 (g) → (CH3) 3NBCl3 (s) Drag the appropriate items to

What is the mass of 0.8 moles of Iron? A) 12.1 grams B) 25.2 grams C) 44.7 grams D) 100.8 grams

Imagine that you have isolated a mysterious liquid from a sample of food. you add the liquid to a beaker of water and shake vigorously. after a few minutes, the water and the other liquid separate into two layers.

The development of a new experimental method is most likely to change a theory if it makes it possible to___. A. analyze samples when they are frozen B. perform the experiment in a different lab C. obtain and analyze results more quickly D.

Which has the highest viscory? Milk? Water? Orange juice?

What was venter's comtributionto science?

How many atoms are in 151 g of calcium?