Ions
What is an ion?
an atom or molecule with a net electrical charge
How does a covalent bond form?
when atoms share electrons, primarily between nonmetal atoms, to achieve a stable electron configuration, often resembling that of a noble gas
Why do we balance equations?
Law of conservation of mass
What is the Molarity of a solution of CaCI2 that contains 0.4moles of solute in 320 mL of water?
1.25
How many atoms are in a mole?
6.022(10 to the 23) atoms
What is the difference between a Cation and a Anion?
a cation is positively charged and a anion is negatively charged
Is a ionic bond e-shared or transferre?
Transferred
What type of reaction is this 2CO(g)+1O2(g)=2CO2(g)?
Combustion
What is the Molarity of a solution of KNO3 if 150 grams are dissolved in 4.2L of solution?
0.353
If you have 23g of NaCI, how many moles do you have?
0.393
Atoms will gain or lose electrons to achieve electron configurations similar to what?
Noble gases
What is the difference between a polar covalent bond and a non-polar covalent bond?
In a polar covalent bond, electrons are shared unequally, while in a non-polar covalent bond, they are shared equally.
What does the law of conservation of mass state?
Mass cannot be created or destroyed by a chemical reaction
What is the volume of a solution of NaCI that has a molarity of 2.4M, and contains 8.2 moles of solute?
3.42L
You have 4.2 moles of CaCo3. how many molecules do you have?
2.53(10 24) mol
What is the formula for sodium chloride and magnesium chloride
NaCl ans MgCl2
Write the formula for dinotrogen monoxide
N2O
What type of reaction is this 2Al(s)+3S(s)=1Al2S3(s)
Synthesis
What mass is needed to make the solution indicated-2.0 liters of a 1.5 M sodium nitrate (NaNo3) solution
255
You have 4.2 moles of CaCO3 how many grams do you have?
420.4g
What is the formula for calcium phosphate?
Ca3(PO4)2
What does a Lewis Dot Structure look like for an oxygen atom?
six valence electrons around the oxygen symbol
Balance this - __CH4(g)+___O2(g)=__CO2+__H2O
1,2,1,2
What mass is needed to make the solution indicated - 1.0 liter of a 1.0 M mercury(II) chloride (HgCl2) solution
272 rounded
What is the molar mass of H2SO4?
98.09 mol