Structure and Properties
The type of element that usually loses electrons.
What is a metal.
The chemical formula for aluminum chlorate
Al(ClO3)3
How many sig figs? 1.0020
5
Which is more soluble in water? HF or O2 ? WHY?
HF, Polar (like dissolves like)
As the temperature of a gas decreases, what happens to the volume? (all other variables are held constant)
it decreases
The element with the smallest atomic radius.
Helium
Give an example of a synthesis reaction using real chemicals.
A + B --> AB
How many atoms are in 0.0213 moles of neon?
1.28 x 1022 atoms
What are the most common units for concentration in chemistry?
mol/L
Avogadro's Law says that equal volumes of gases at the same pressure and temperature have the same ______________________
number of molecules
What type of bond exists in lithium oxide?
ionic
Will the following reaction form a precipitate? What is it? AgNO3 + NaCl
Yes, AgCl
How many moles are in 30.97 g of P?
1
How many moles are in 300 mL of a 0.250 M solution of HCl?
0.075 mol
How many moles are in 2.00L of He gas at SATP?
0.0806 mol
How many protons, neutrons, and electrons are in the following isotope? Hg-203
80, 80, 123
What are the coefficients for the following balanced equation? C4H10 + O2 --> CO2 +H2O
2,13,8,10
What mass of water will be produced when 16 g of hydrogen gas combines with excess oxygen?
140 g
What is the concentration (in mol/L) of 4.8 g of potassium carbonate in 130 mL of water?
0.27 mol/L
How many litres of hydrogen gas are required to produce 40 L of ammonia gas at SATP according to the following equation: N2 + 3H2 --> 2NH3
60 L
List the three types of intermolecular forces in order of strength.
London < Dipole-Dipole < HBonding
Complete the double displacement reaction (NH4)2CO3 + CaCl2 -->
CaCO3 + 2NH4Cl
What mass of precipitate will form when 10.00mL of 0.30 M NaOH is mixed with excess CuCl2?
0.15 g
In a titration, 13.15 mL of 1.50 M NaOH is used to titrate 10.00mL of HCl. What is the concentration of the HCl?
1.97 M
What volume of water will be produced when 11.0 g of oxygen gas combines with excess hydrogen gas at STP?
15.4 L