final exam sem2 Flashcards
(45 cards)
what type of ions have names ending in ide
only anions
when group 2a elements form they
lose 2 electrons
what is the correct name for the N3 ion
nitride ion
When naming a transition metal ion that can have more than one common ionic charge, the numerical value of the charge is indicated by a ____.
Roman numeral following the name
Aluminum is a group 3A metal. Which ion does Al typically form?
Al3
In which of the following are the symbol and name for the ion given correctly?
Fe2+: ferrous ion; Fe3+: ferric ion
how many hydrogen atoms are in 5 molecules of isopropyl alchohol C3H7O
35
all of the following are equal to avogadros # except
the # if atoms of bromine in 1 mol Br2
how many mols of silver atoms are in 1.8 x 10^20 atoms of silver
3.0 x 10^-4
how many atoms are in 0.075 mol of titanium
4.5 x 10^22
how many molecules are in 2.12 mol CO2
1.26 x 10^24 molecules
what is true abt the molar mass of chlorine gas
the molar mass is equal to 71.0g
what is the molar mass of (NH4)2CO3
96g
what is the mass in g of 5.90 mol C8H18
673g
what is the number of mols in 432 g Ba(NO3)2
1.65 mol
how many moles of CaBr2 are in 5.0 grams of CaBr2
2.5 x 10^-2
which combination of temp and pressure correctly describes stp
0oC and 101 kPa
what is volume, in liters of 0.500 mol of C3H8 gas at stp
11.2 L
what is the # of mols in 500 L of He gas at stp
22 mol
what is the # of mols in 9.63 L of H2S gas at STP
0.430 mol
what is the density at STP of the gas sulfur hexaflouride SF6
6.52 g/L
the molar mass of a certain gas is 49 g what is the density of the gas in g/L at stp?
2.2 g/L
a 22.4 L sample of which of the following substances, at stp, would contain 6.02 x 10^23
oxygen
if the density of an unknown gas Z is 4.50 g/L at stp, what is the molar mass of gas z
101 g/mol
