What unit is used to measure frequency?

First, get about 20 mL of the quinine stock solution in a clean beaker to prepare 250 mL of about 2 ppm quinine in 0.05 M H2SO4. Calculate the actual final concentration based on your dilution of the stock solution.

Cisplatin is synthesized as follows: K2PtCl4 (aq) + 2NH3 (aq)  Pt (NH3) 2Cl2 (s) + 2KCl (aq) What mass of cisplatin can be made from 100. g of K2PtCl4 and sufficient NH3? What mass of KCl is also produced?

Hydrogen has a volume of 1.0l and the pressure is 5.4 ATM if the initial temperature is 33 degrees c the final volume is 2.0 l and the final pressure is 4.3 ATM what was the final temperature of the hydrogen?

At a given temperature, 300m of carbon dioxide has a mass of 5.94kg. What is the density of carbon dioxide at this temperature

2. Perception: a. is faulty. b. is not always accurate. c. does not always reflect reality. d. All of these choices.

Defined the following convection

The study of matter and the changes that occurs in matter

Which would be a good source to find weather information about your town from last month? reference book about weather old copies of local newspapers a magazine with weather articles

What is the difference between a mixture, compound, element and pure substance

It takes 554 kJ to remove one mole of electrons from the atoms at the surface of a solid metal. How much energy does it take to remove a single electron from an atom at the surface of this solid metal?