Mole Conversions
The amount of atoms in 0.75 moles of calcium carbonate (CaCO3)?
0.75*6.02*10^23*5 (because 5 atoms) =
What is 2.26*10^24?
What is 88.02g of CO2?
What are example of 3 periodic trends?
What is Atomic radius, ionic radius, ionization energy, electron affinity, metallic character, etc.?
What is the difference between an empirical and molecular formula?
Empirical - Simplest ratio of elements
Molecular - Actual number of atoms
What are two chemistry topics where Avogadro's number is significant?
What is Stoichiometry, Gas Laws, Solutions
The amount of moles in 18.75 g of oxygen.
What is 1.17 moles of oxygen?
If 2.5 moles of H2 reacts with excess oxygen, how many grams of water are produced?
What is 45.04g of water?
Which element has the highest first ionization energy?
What is He?
A compound contains 92.3% carbon and 7.7% hydrogen by mass. What is its molecular formula if the molar mass is 78 g/mol?
(piece of candy if you get the name)
What is C6H6 (benzene)?
Where does the word mole come from?
What is the German word molekul?
The amount of grams of oxygen in 0.25 mol of sulfur dioxide (SO2).
0.25*2*16 =
What is 8g of oxygen?
What are enzymes role in chemical reactions? Candy if you can draw a diagram and give specific names/examples.
Speed up chemical reactions.
Catalase
Substrates: Hydrogen peroxide (H₂O₂)
Products: Water (H₂O) and oxygen (O₂)
Diagram (spiky thing)
What is the noble gas electron configuration for chromium?
What is [Ar]3d54s1?
Determine the percent composition of carbon in acetic acid (CH3COOH).
What is 40%?
Three industries in which the mole is especially significant (hint: what industries use chemistry?).
Pharma, environmental science, food industry
A mole is made of 30% glucose (C6H12O6), 50% water (H20), and 20% nitrogen. The mole is 75g. How many moles of glucose is he made of?
What is 0.125 moles of glucose?
Calculate the mass of Al2O3 produced when 27 grams of aluminum reacts with excess oxygen.
What is 60g of Al2O3?
Give a two-sentence explanation on why atomic radius increases down a group, but decreases left to right a period.
Across a period (left to right) - Increasing Zeff, pulling electrons closer, reducing atomic radius.
Down a group - More electron shells, increasing atomic radius
A mole stumbles into a chemistry lab. In it, he finds a beaker with 1kg of bromine. Half the liquid escapes as gas when he tips over the beaker and drinks the whole beaker. Given that his volume is 5L, what is his molarity?
What is 0.626M?
he was not ok after
What is the charge of one mole of electrons?
You have a sample of 6.78 * 10^24 atoms of nitrate (NO3), how many g of oxygen do you have?
What is 522.38g of oxygen?
In the combustion of two moles of propane (C3H8), how many moles of CO2 are produced?
What is 6 moles of CO2?
Where do expanded valence shells typically occur?
What is the molar mass of potassium permanganate (figure out the formula by yourself)?
What is 158g?
How much does a mole of moles weigh?
a. half the mass of the moon
b. the mass of the earth
c. the mass of mars
What is A?