Avogadro's #
What is Avogadro's number?
6.02 x 10^23
What is the mole?
SI base unit to measure the amount of substance
Cu(NO3)2 x 5H20
Copper Nitrate Pentahydrate
What is equal to Avogadro's number?
the number of molecules of nitrogen in 1 mol N2
How many hydrogen atoms are in 5 molecules of isopropyl alcohol, C3H7O
3(12.01) + 7(1.01) + 16 = 35
What is Avogadro's number definition?
the number of representative particles in a mole
What is one mole?
the amount of pure substances that contain 6.02 x 10^23 representative particles
CuSO4 x 5H2O
Copper Sulfate Pentahydrate
Which element exists as a diatomic molecule?
What is the number of moles in 432 g Ba(NO3)2
1.65 mol
How do you find number of particles?
number of given moles x 6.02 x 10^23 particles/mols
What is molecular formula?
A formula that specifies the actual number of atoms of each element in one molecule of a substance
FePO4 x 7H2O
Iron II Phosphate Heptahydrate
For which of the following conversions does the value of the conversion factor depend upon the formula of the substance?
mass of any substance to moles
What is the number of moles of beryllium atoms in 36 g of Be?
4.0 mol
What is empirical formula?
formula showing the lowest whole number ratio of atoms in a compound
What is Molar Mass?
the mass in grams of one mole of any pure substance
The name of the hydrate is calcium chloride dihydrate. What is the name of the symbol hydrate?
2 H20
What is atomic mass?
the number of grams of an element that is numerically equal to the atomic mass of the element in amu
How many moles of CaBr2 are in 5.0 grams of CaBr2?
2.5 x 10^-2 mol
What is percent composition?
the percent by mass of each element in a compound
Mole is considered as...
extensive property
Name the hydrate?
10 H2O
Which of the following is NOT true about atomic mass?
The atomic mass is 12 g for magnesium
What is the mass of silver in 3.4 g AgNO3?
2.2 g