May the forces be ever in your favor
This is the polarity and intermolecular forces between NH3 atoms.
What is polar and H-bonding?
A 7 Liter container will hold about 12 g of this gas at 0°C and 1 atm.
(The answer could be F2, Cl2, Br2, N2, or NO)
What is F2?
It is the full electron configuration for the Strontium (Sr) ion.
What is 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6?
(Sr+2)
This is the bond angle for BF3.
What is 120 deg?
This is what the mass spec of an element can tell you (2 things).
What is the number of isotopes and % abundance of those isotopes?
Between H2S and H2O, this is the molecule that has the higher boiling point, and this is why.
What is H2O because H2O has H-bonds, and H2S has dipole-dipole, which are weaker bonds.
This is why ethane, C2H6, melts at -182°C and nonane, C9H20, melts at -54°C.
What are both have LDF forces, but nonane's forces are stronger due to being more polarizable (or has more connections or has more electrons)?
It is the grams of 1 mole of KAl3Si3O10(OH)2
What is 398 grams?
Add Ca and N together to get an ionic compound
What is Ca3N2?
This is the grams of KCl in a 0.450 g potassium supplement that contains 22.0% K by mass. The potassium in the supplement is KCl.
What is 0.189 g KCl?
This is the reason that the melting point of NaF is 993 °C, whereas the melting point of CsCl is 645 °C.
What is NaF has smaller atoms (since both atoms have the same charges, the distance is reduced in NaF, so Force increase due to Coulomb's Law).
This is the temperature of oxygen gas must be changed to reduce a 2-L sealed, rigid cylinder at 0.8 atm and 25°C to a new pressure of 0.3 atm.
What is -161°C?
It is the number of phosphorus (P) atoms in
15 g of Na4P2O7 * 10 H2O
What is 4.35 x 1023 atoms of P?
In the molecule C2H4, there are this many sigma, and this many pi bonds.
What are 5 sigma bonds and 1 pi bond?
This is the molecular formula for a compound whose empirical formula is C2H4O and has a molar mass of ~130 g/mol.
What is C6H12O3?
This is the substance that would have the higher equilibrium vapor pressure: ethanol (CH3CH2OH) or water (H2O).
This is the molar mass of a gas sample with a mass of 10 grams that occupies 6.0 liters and exerts a pressure of 2.0 atm at a temperature of 26°C.
What is 20.4 g/mol?
If 1.5 × 1023 atoms of an unknown element has a mass of 12 g, this is what the molar mass of the element is closest to. (numerical answer)
What is 48 g/mol?
Complete the correct structure for SCN-1 (must be able to prove through formal charges)
What is C in the middle double-bonded to S and N with brackets and charge?
Find the empirical formula for a compound only one element of which is a metal. The compound’s percentage composition by mass is 40.0% metal, 12.0% C, and 48% O. The metal could be Na, Ca, or Sr.
What is CaCO3?
SO2 melts at 201 K, whereas SiO2 melts at 1,8883 K; for this reason.
What is SiO2 is a covalent network bond that has a stronger force than SO2, which has weaker dipole-dipole forces.
This is the pressure of a 2.00 mL sealed glass vial containing a 1.00 g sample of CH3Cl(l) that is stored in a freezer at 233 K.
Also, this is the explanation of why it would be unsafe to remove the vial from the freezer and leave it on a lab bench at 298 K.
What is 282 atm, and at 298 K, the liquid would vaporize, and the glass vial might not be strong enough to withstand the pressure?
When a hydrate of CuSO4 * X H2O weighing 24.95 g is heated until all the water is removed, the anhydrate weighs 15.95 g, and this is the value of X. (MM of CuSO4 = 159.5 g/mol)
What is 5?
This is the electron and molecular geometry of BrF5.
What is octahedral (electron) and square pyramidal (molecular)?
A confiscated white substance was purified by a forensic chemist and subjected to elemental analysis. Combustion of a 32.00 g sample yielded 78.99 g of carbon dioxide and 19.96 g of water. Analysis for nitrogen showed that the compound contained 4.62 % N by mass. Calculate the empirical formula.
What is C17H21NO4?