The Mole
What is Avogadro's number?
6.022 x 1023
3 sig figs
Define a cation and anion.
Cation: positive charge
Anion: negative charge
How many moles of hydrogen are in 1 mole of H2O?
2
What is the heaviest organ?
skin
6.022 x 1023
Is melting butter a chemical or physical property?
How demonstrated that the atom is mostly empty space with a positive center?
Ernest Rutherford
Find out how many moles of hydrogen are present in 36.2 grams of sulfuric acid.
0.738 moles
What animal has killed the most humans in history?
the mosquito
What is the conversion factor to get from grams to moles?
g/mol
Find the density of a liquid that has a mass of 23.2 grams and volume of 4.2 L in g/ml.
0.0055 g/mL
Name ZnO
zinc oxide
How many atoms of iron are in 1 mole of Fe2O3?
1.24 x 1024
The process of turning DNA into RNA (usually mRnA)
Convert 23 grams of NaCl into moles.
0.393 moles
A dolphin can swim up to 60 km/hr. A great white shark can swim up to 35 miles/hr. Who is faster?
Dolphin!
Explain the process of naming ternary versus binary acids
ternary (3 elements): root name + ic acid (phosphoric acid)
binary: hydro + root + ic acid (hydrochloric acid)
How many atoms of magnesium are in 3.5 moles of MgCl2?
2.11 x 1024
What is the largest shark?
The Whale Shark
Convert 63.2 grams of K2SO4 into moles.
0.363 moles
A kangaroo can jump up to 10 feet with a running start. What is this in decameters?
0.3048 decameters
Find the molar mass of Cr2O7 2-
215.99 g/mol
If you have 2.43 kg of barium chloride, how many atoms of chlorine do you have and how many atoms of barium?
atoms of chlorine: 1.41 x 1025
atoms of barium: 7.03 x 1024
How many permanent teeth does an adult cat have?
30