What structure of an atom take part in a covalent bond?

Mixtures are made up of what substances.

3. What is the mass of HI used to create 2.50L of a 0.48 M solution of hydroiodic acid?

A textbook measures 250mm long, 224mm wide, and 50.0mm thick. I has a mass of 2.94kg. what is the volume of the book in cubic meters

An over-the-counter multi-vitamin has 250.0 mg tablets that are 40 % Vitamin B6 by mass. If you take 2 tablets, what mass of Vitamin B6 have you ingested?

Complete combustion of 2.60 g of a hydrocarbon produced 8.46 g of co2 and 2.60 g of h2o. what is the empirical formula for the hydrocarbon?

Why would it be unwise to take a hot air balloon ride in the upper atmosphere? (The chapter is about Pressure)

Unit conversions. (a) Convert 10,000 dynes to units of lbm ∙ ft/s^2 and lbf (b) Convert 0.2 atm to units of Kpa and lbf/in^2 (c) Convert 37 °C (physiological temperature) to units of °F and K. (d) Convert 50 in 2 ∙ lbm/s^2 units of joules and cal.

How much CO2 is produced from 10g of CH4?

Balance the following redox reaction in acidic solution. Zn (s) + MnO-4 (aq) → Zn+2 (aq) + Mn+2 (aq)

66.0g of dry ice (solid carbon dioxide)