A sample of a certain lead compound contains 7.32 grams of lead for each gram of oxygen. A second sample has a mass of 62.83 g and contains 24.03 g of oxygen. Could the two samples be the same?
Give the ratio of mass of lead / mass of oxygen for each sample, to support your answer.
sample one=
sample two=
What element has the following ground-state electron configuration?
[Ne]3s2
Calculate the atomic mass of titanium. The five titanium isotopes have atomic masses and relative abundances of 45.953 amu (8.00%), 46.952 amu (7.30%), 47.948 amu (73.80%), 48.948 amu (5.50%), and 49.945 amu (5.40%).
amu
How do you find perecent error?
Write a balanced nuclear equation for the reaction in which the transition metal zirconium-97 undergoes beta decay
A photon has an energy of 3.18 10-13 J. What is the photon's wavelength?
What type of electromagnetic radiation could it be?
infrared
X ray
gamma ray
TV, FM
ultraviolet
radio
Carbon reacts with oxygen to form two different compounds. Compound I contains 4.89 g carbon for every 6.49 g of oxygen. Compound II contains 20.13 g carbon for every 53.1 g of oxygen. What is the ratio of carbon to a fixed mass of oxygen for the two compounds?
CompoundMass C (g)Mass O (g)MassC / MassO
I4.896.49
II20.1353.1
Write the balanced chemical equation for the following double-replacement reaction.
Aqueous lithium iodide and aqueous silver nitrate react to produce solid silver iodide and aqueous lithium nitrate.
LiI(aq) + (aq) (s) + (aq)
Write the correct formula for the ionic compound composed of barium and sulfid
