Unit 1 & 2
Convert 10 degrees Celsius to Kelvin
283 K
What element has an electron configuration of 1s22s22p5
Fluorine
What bond forms between Na+ + Cl- into NaCl?
Ionic Bond
What are the coefficients in the chemical equation 2NH3 → N2 + 3H2?
2; 1; 3
The mole is a ______ unit
Counting
How many neutrons does Iodine have?
74 neutrons
Which of the following elements is more reactive? Chlorine(Cl) or Fluorine(F)
Fluorine(F)
What is the name for the following covalent compound? N2O3
Dinitrogen trioxide
What are the reactants in the chemical equation 2NH3 → N2 + 3H2?
2NH3
How many molecules are in 4.2 moles of methane (CH4) gas
2.53 x 1024 molecules
Convert 32 cg to pounds
Hint 1 kg =2.2 lbs
0.0007 lbs
7.04 x 10-4 lbs
What element has an atomic number of 3?
Lithium
What is the Steric # for CH4?
4
What type of reaction is the following chemical equation? Al2O3 + 6Na → 3Na2O + 2Al
Single replacement
What is the mass in grams of 2.64 mol of NaNO₃?
224.43 grams NaNO3
Determine the average atomic mass of the following mixture
93% 39K .01% 41K 6.99% 40K
39.07 amu
What is the number of valence electrons in tin (Sn)?
4 valence electrons
What VSEPR shape does H2O have?
Bent/Angular
Predict the products and balance the reaction.
__K + __MgCl2 →
2K + MgCl2 → Mg + 2KCl
What is the percent composition of Oxygen in Fe2O3?
30.06%
Is the following mixture heterogeneous or homogeneous? Salad
Heterogenous
What is the abbreviated electron configuration of calcium?
[Ar]4s2
Substance A has london-dispersion forces. Substance B has london-dispersion forces and dipole-dipole forces. Substance C has dipole-dipole and Hydrogen bonding. Which substance has the highest boiling point?
Substance C
Write the following equation in a sentence. H2(g) + S(s) → H2S(g)
1 molecule of dihydrogen gas reacts with 1 molecule of solid sulfur to produce 1 molecule of hydrosulfuric acid gas.
What is the molecular formula for a compound that is 14.31% hydrogen and 85.63 %o carbon if the molar mass of the compound is equal to 56.1072 grams
C4H8