Random
What is the multiplier to have CH3O2 become C3H9O6
muliply by 3
Calculate the molar mass of glucose (C6H12O6)
180.16g/mol
___ H3PO4 + ___ KOH -> ___ K3PO4 + ___ H2O
1 3 -> 1 3
For the equation 2Al+3Cl2→2AlCl3, how many moles of chlorine gas are needed to react completely with 4 moles of aluminum?
6 moles of Cl2
If you start with 4 moles of O2 in the reaction C+O2→CO2, how many moles of
carbon dioxide will be produced
4 moles
A sample contains 0.75 moles of magnesium (Mg). How many atoms does this sample
contain?
4.52×1023 atoms.
___ Al + ___ S8 -> ___ Al2S3
16 3 -> 8
In the reaction CaCO3→CaO+CO2, if 50 grams of calcium carbonate decompose, how many grams of carbon dioxide are produced?
22 g of CO2
Given the balanced equation N2+3H2→2NH3, how many moles of ammonia are
formed from 3 moles of hydrogen gas?
2 moles of ammonia
Where is the average atomic mass at the periodic table for an element
Underneath the symbol
6C
12.01
__ H3PO4 + __ Mg(OH)2 -> __ Mg3(PO4)2 + __ H8O2
2 3 -> 1 1
Sn + 2HF --> SnF2 + H2
How many moles of HF will be needed to react with 48 grams of Sn?
0.81 moles
Chlorine has two isotopes. Chlorine-35 has an actual mass of 34.9689 u and chlorine-37 has a mass of 36.9659 u. In any sample of chlorine atoms, 75.771% will be chlorine-35 and 24.229% will be chlorine 37. Calculate the average atomic mass of chlorine.
35.45 amu
How many moles of Au is equal to 4.77 x 1027 Au atoms
7920 moles
magnesium reacts with
oxygen to produce magnesium oxide
2𝑀𝑔 + 𝑂2→2𝑀𝑔𝑂
H2SO4 + 2 NaOH --> Na2SO4 + 2 H2O
What mass of H2SO4 would be required to react with 0.75 mol of NaOH?
36.8 grams
One atom has 20 protons and a mass of 44. Another atom has 20 protons and a mass number of 40. What is the identity of these atoms? How do you account for the difference in mass numbers?
Calcium, 40.08 amu
Calculate the molar mass of calcium carbonate, then determine how many moles
are in 50.0 grams of calcium carbonate
molar mass- 100.09 g/mol
moles -0.500 mol
ammonium sulfate reacts with barium chloride to
produce barium sulfate and ammonium chloride
(𝑁𝐻4)2𝑆𝑂4 + 𝐵𝑎𝐶𝑙2→𝐵𝑎𝑆𝑂4 + 2 𝑁𝐻4𝐶𝑙
Sn + 2 HF --> SnF2 + H2
How many grams of SnF2 are produced from the reaction of 30.0 g of HF?
117 grams