An aqueous solution has an h3o + concentration of 4.4*10-2 m. calculate [oh-] for this solution.

Electrons are part of an?

Give the name and formula of the compound whose molecules consist of two sulfur atoms and four fluorine atoms.

Which Element (s) have 3 Energy Levels? (select all that apply) Sodium (Na) Calcium (Ca) Tin (Sn) Neon (Ne) Phosphorus (P) Sulfur (S) Lithium (Li) Yttrium (Y) Argon (Ar)

Which is an example of a chemical change? water boiling a cake baking sugar dissolving butter melting

The frequency of a water wave that has a wavelength of 0.5 m and a speed of 4 m/s

Increasing the temperature increases the rate of a many reactions by:

2A balloon filled with helium occupies 20.0 L at 1.50 atm and 25°C. How many moles of helium will there be in the balloon at STP? A. 22.4 moles B. 1.12 moles C. 0.0446 moles D. 0.893 moles E. 1.23 moles F. 4.55 moles

1. Which has a larger radius Ca atom or Ca+2 ion? 2. Which has a greater radius F atom or F - ion? 3. Which is the correct way of understanding the trend for Ionic radius Vs. Atomic radius?

For which of the following activities might you want to hire a chemist? A. examining the structure of plant cells B. building a fence C. building a wood storage shed D.

How do I build natural testosterone