Good Luck! It's Math
In 1.00 mol of potassium zirconium sulfate trihydrate, K4Zr(SO4)4 • 3 H2O, how many potassium atoms are there?
4 x 6.022 x 1023 = 2.4 x 1024 K atoms
The atom that contains only one electron in the highest occupied energy sublevel
S
Ca
Ga
Sb
Br
Ga
What is your teacher's name?
Mrs. Latta
A sample of a compound contains 3.21 g of sulfur and 11.4 g of fluorine. What is the empirical formula of the compound?
SF6
Based on the positions of elements in the periodic table, which of the following groups contains compounds that are most likely to have similar chemical properties?
KCl, KBr, KI
CF4, PF3, SeF2
NH3, H2O, HF
KCl, KBr, KI
What is your teacher's favorite color?
Pink
A solution of methanol, CH3OH, in water is prepared by mixing together 128 g of methanol and 108 g of water. The mole fraction of methanol in the solution is:
0.40
mole of methanol/mole of water
What is the Ground state electron configuration for Mn+3?
1s22s22p63s23p63d4
Where did your teacher attend college?
University of Florida
- points if you guessed FSU!
When hafnium metal is heated in an atmosphere of chlorine gas, the product of the reaction is found to contain 62.2 percent Hf by mass and 37.4 percent Cl by mass. What is the empirical formula for this compound?
HfCl3
1s2 2s2 2p6 3s2 3p3
Atoms of an element, X, have the electronic configuration shown above. The compound most likely formed with magnesium, Mg, is
Mg3X2
What degree did your teacher earn in college?
B.S in Mechanical Engineering
A sample of CaCO3 (molar mass 100. g) was reported as being 30. percent Ca. Assuming no calcium was present in any impurities, the percent of CaCO3 in the sample is
75%
The elements in which of the following have most nearly the same atomic radius?
Be, B, C, N
Cr, Mn, Fe, Co
C, P, Se, I
Cr, Mn, Fe, Co
What kind of dog does your teacher have?
Giant Schnauzer