Author: Anonymous

Determine the [OH-] concentration in a 0.169 M Ca(OH)2 and the pH of the solution. Answers provided are in the order [OH-] and pH respectively.

An iron bar of mass 819 g cools from 93.0°C to 5.0°C. Calculate the metal’s heat change (in joules). Specific heat of Fe is 0.449 J/g°C 

An iron bar of mass 819 g cools from 93.0°C to 5.0°C. Calculate the metal’s heat change (in joules). Specific heat of Fe is 0.449 J/g°C 

Determine the mass of a ball with a wavelength of 3.45 × 10-34 m and a velocity of 6.55 m/s.

How much heat is absorbed when 30.00 g of C(s)(molar mass 12.01 g/mol) reacts according to the following chemical equation? 5 C(s) + 2 SO2(g)

           C6H6    +          O2        →        CO2     +          H2OWhen the above equation is balanced, the coefficient in front of the carbon dioxide molecule is:

What is the mass percent concentration of a sucrose solution made by adding 4 g of sucrose to 8 g of water?

           C6H6    +          O2        →        CO2     +          H2OWhen the above equation is balanced, the coefficient in front of the carbon dioxide molecule is:

When a liquid changes to a solid, the process is called ____________.

How many nitrogen atoms are in one molecule of (NH4)3Fe(CN)6?