Exam 1 Content
This element has the chemical symbol P?
What is phosphorus?
Elements in the periodic table are arranged in order of increasing this quantity.
What is atomic number?
This type of bonding involves the transfer of electrons and electrostatic attraction between ions.
What is ionic bonding?
This type of reaction is represented by: CH₄(g) + 2O₂(g) → CO₂(g) + 2H₂O(g)
What is a combustion reaction?
Which of these processes are endothermic: melting, condensation, or sublimation?
What are melting and sublimation?
This subatomic particle has a positive charge and is found in the nucleus.
What is a proton?
This is the ground-state electron configuration of a cobalt atom.
What is: 1s22s22p63s23p64s23d7?
This is the electron-domain geometry around the central atom of an H₂S molecule.
What is tetrahedral?
This is the hybridization of the carbon atom in CO₂.
What is sp?
If air pressure is 485 mmHg, this is the pressure in atm.
What is 0.638 atm?
A glass of water with 1.14×1025 molecules contains this many moles.
What is 18.9 mol?
The 3d subshell consists of this many orbitals and can hold this many electrons.
What are 5 orbitals and 10 electrons?
These are all the intermolecular forces found in a sample of pure NH₃.
What are London dispersion forces, dipole-dipole interactions, and hydrogen bonding?
These two greenhouse gases are released by producing and burning fossil fuels.
What are CH₄ and CO₂?
A nitrogen gas sample cools from 250°C to 150°C at constant pressure. If initial volume is 310 mL, this is the final volume.
What is 0.251 L?
This is the symbol for a species with 17 protons, 20 neutrons, and 18 electrons.
What is 37Cl-?
The noble gas (condensed) electron configuration for a ground-state lead atom.
What is [Xe] 6s24f145d106p2?
The percent by mass of chlorine in ethylene chloride (C₂H₄Cl₂).
What is 71.7%?
The net ionic equation for 3CaBr₂(aq) + 2Na₃PO₄(aq) → Ca₃(PO₄)₂(s) + 6NaBr(aq).
What is 3Ca²⁺(aq) + 2PO₄³⁻(aq) → Ca₃(PO₄)₂(s)?
Using Hess’s law, this is ΔH°rxn for WO₃(s) + 3H₂(g) → W(s) + 3H₂O(g)
given:
2W(s) + 3O₂(g) → 2WO₃(s) ΔH° = –1685.8 kJ
H₂(g) + ½O₂(g) → H₂O(g) ΔH° = –241.8 kJ
What is 117.5 kJ?
A hybrid car with 50 miles per gallon has this fuel economy in km/L.
What is 21 km/L?
A large snowflake with a mass of 0.500 mg contains this many water molecules.
What is 1.67×1019 molecules?
Ferrocene has percent composition 64.56% C, 5.42% H, 30.02% Fe. This is its empirical formula.
What is C₅H₅Fe?
5.00 g of N₂ reacts with 5.00 g of H₂ to produce NH₃. This is the theoretical yield of ammonia
What is 6.08 g?
A 150.0 g sample of iron at 95.0°C is placed into 250.0 g of water at 22.0°C in a perfectly insulating container. The specific heat of iron is 0.45 J/g*°C and the specific heat of water is 4.184 J/g*°C. What is the final temperature of the mixture?
What is approximately 26.2°C?