The density of gold is 19.3 g/mL. What is the mass of a solid gold tooth that occupies a volume of 0.00369 L?
Aluminum consists of only one naturally-occurring isotope. W…
Aluminum consists of only one naturally-occurring isotope. What is the mass of this isotope?
How many protons, neutrons, and electrons are there in one a…
How many protons, neutrons, and electrons are there in one atom of gold-197?
Which of the following scientists used an alpha particle sca…
Which of the following scientists used an alpha particle scattering experiment to prove the existence of a dense, positive nucleus (and disprove the earlier “Plum Pudding” model of the atom)?
Osmium has a density of 22.6 g/cm3. What is the mass of a cu…
Osmium has a density of 22.6 g/cm3. What is the mass of a cube of osmium that is 1.01 cm long, 0.233 cm wide, and 0.648 cm high?**
What is the electron domain geometry (EDG) and molecular geo…
What is the electron domain geometry (EDG) and molecular geometry (MG) of the SF4 molecule pictured below?
How many carbon atoms are contained in 30.5 g of glucose (C6…
How many carbon atoms are contained in 30.5 g of glucose (C6H12O6)?
What is the name of the compound formed between a Fe2+ catio…
What is the name of the compound formed between a Fe2+ cation and a Br- anion? (Hint: iron has multiple oxidation states)
The plot below shows the distribution of molecular speeds fo…
The plot below shows the distribution of molecular speeds for five different gases: N2, O2, H2, He, and H2O (marked as A through E in no particular order): Which of these statements is true?
What assumptions in the Ideal Gas Law regarding the nature o…
What assumptions in the Ideal Gas Law regarding the nature of gas particles are corrected for by using the Van der Waals equation instead?