Matter and atoms
Convert 567 K to celsius.
294 C
How many particles in 3.5 moles of H2S?
2.1x1024
Describe the conditions in which a gas is ideal.
high temperature and low pressure.
What is the ion for silver?
Ag+
disulfur hexafluoride
How many protons, neutrons and electrons does a lithium ion have?
n = 4
e = 2
How many L in 35 g of Cl2?
11.2 L
A sample of TeF at 60 kPa experiences a change in volume from 0.7 m3 to 0.4 m3. What is the resulting pressure in kilopascals?
105 kPa
What is a lattice structure?
A lattice is a 3D geometric arrangement of points where each point represents the position of an atom, ion, or molecule in a crystal.
BONUS!! 200 points. What is my daughter's second name?
Lyn
Lithium-6 is 4% abundant and lithium-7 is 96% abundant. What is the average mass of lithium?
6.96
How many grams in 100 mL make up a 5 M solution of HCl?
18.25 g
A sample of gas has its temp changed from 110℃ to 700℃. If its new pressure is 60kPa, what was its old pressure?
23 kPa
How is the lattice structure of an ionic compound different than a metallic compound?
Ionic Compound: Positive and negative ions (e.g., Na⁺ and Cl⁻)
Metallic Compound: Positive metal cations surrounded by a sea of delocalized electrons
Describe the geometry and structure of a diamond, fullerene and graphite.
Diamond: 3D tetrahedral network (giant covalent structure). Each carbon atom is covalently bonded to 4 other carbon atoms in a tetrahedral arrangement.
Graphite: Layers of carbon atoms arranged in hexagonal rings (2D planar sheets). Trigonal planar geometry.
Fullerene: Molecular structure shaped like a soccer ball (spherical cage). Made of 60 carbon atoms arranged in pentagons and hexagons. Trigonal planar geometry.
Antimony has two naturally occurring isotopes. Using the average mass from the periodic table, find the abundance of each isotope. Antimony-121 and antimony-123.
121 = 62%
123 = 38%
If the concentration of a 100 mL substance is 30 M, what would be its new volume if it is diluted to 10 M?
300 mL
What is the pressure exerted by 2.3 mol of a gas with a temperature of 40°C and a volume of 3.5 L? (must be in correct unit)
1709 kPa
Which two metals combine to form brass?
copper and zinc
What is a coordination bond?
A coordination bond (also called a dative covalent bond) is a type of covalent bond in which both electrons in the shared pair come from the same atom.
SURPRISE +500 points if you guess my favorite color
Green
If I wanted to take a 5 M substance of H2O2 and dilute it to 2 M in 100 mL, how much volume of the 5 M should I take (in L)?
0.04 L
In the following reaction, how many mL of H₂O are produced if 35 dm³ of CH₄ are reacted?
CH₄ + 2 O₂ → CO₂ + 2 H₂O
70 000 mL
Explain why metals are malleable and ionic compounds are brittle.
When you hit or bend a metal, the layers of ions can slide over each other without breaking the metallic bond because the delocalized electrons keep holding everything together.
Determine the intermolecular forces present in a substance of XeF4. Justify with lewis structure.