South Pasadena • AP Chemistry
... The reaction of 25.0 g benzene, C6H6, with excess HNO3 resulted in 21.4 g C6H5NO2. What is the percentage yield? C6H6 + HNO3 C6H5NO2 + H2O a) 100% c) 54.3% b) 27.4% d) 85.6% 1.056 g of metal carbonate, containing an unknown metal, M, were heated to give the metal oxide and 0.376 g CO2. (Challengin ...
... The reaction of 25.0 g benzene, C6H6, with excess HNO3 resulted in 21.4 g C6H5NO2. What is the percentage yield? C6H6 + HNO3 C6H5NO2 + H2O a) 100% c) 54.3% b) 27.4% d) 85.6% 1.056 g of metal carbonate, containing an unknown metal, M, were heated to give the metal oxide and 0.376 g CO2. (Challengin ...
Formula Equation - Chemistry Teaching Resources
... The Sulphite Groups is particularly awkward because it is very similar to the Sulphate Group, SO4. The Ammonium Groups is particularly awkward because it comes at the beginning of the compounds name. Whenever two or more of a group appears in a formula, brackets must be used to avoid confusion. ...
... The Sulphite Groups is particularly awkward because it is very similar to the Sulphate Group, SO4. The Ammonium Groups is particularly awkward because it comes at the beginning of the compounds name. Whenever two or more of a group appears in a formula, brackets must be used to avoid confusion. ...
The Mole - ETSU.edu
... is a formula unit of an ionic compound? Formula unit is the unit that represents the simplest ratio of cations to anions. A formula unit of NaCl consists of one Na+ and one Cl One mole of an ionic compound consists of 6.022х10²³ of these formula units. One mole of a molecular compound, like H₂O c ...
... is a formula unit of an ionic compound? Formula unit is the unit that represents the simplest ratio of cations to anions. A formula unit of NaCl consists of one Na+ and one Cl One mole of an ionic compound consists of 6.022х10²³ of these formula units. One mole of a molecular compound, like H₂O c ...
chapter 1 - Revsworld
... When a 25.0 mL sample of HNO3(aq) was titrated with 0.101 M NaOH(aq), the stoichiometric point was reached when 41.2 mL of the base had been added. What is the concentration of HNO3(aq) in the sample? (a) ...
... When a 25.0 mL sample of HNO3(aq) was titrated with 0.101 M NaOH(aq), the stoichiometric point was reached when 41.2 mL of the base had been added. What is the concentration of HNO3(aq) in the sample? (a) ...
Algebraic Problem
... A mathematical equation is a statement that sets two expressions equal to each other. A solution to the equation gives a number that, when replaced for the variable, make the equation a true statement. The first step in solving an equation is to simplify the expression on both sides of the equal sig ...
... A mathematical equation is a statement that sets two expressions equal to each other. A solution to the equation gives a number that, when replaced for the variable, make the equation a true statement. The first step in solving an equation is to simplify the expression on both sides of the equal sig ...
Unit 7 Chap. 7 Chemical Formulas and Compounds
... THE “OLD SYSTEM” OF NAMING BINARY MOLECULAR COMPOUNDS THE GENERAL RULE IS TO NAME THE LESS ELECTRONEGATIVE ELEMENT FIRST AND THE MORE ELECTRONEGATIVE ELEMENT SECOND. THE FIRST WORD OF A BINARY MOLECULAR COMPOUND IS MADE UP OF (A) THE PREFIX OF THE NUMBER OF ATOMS OF THE FIRST ELEMENT AND (B) THE NAM ...
... THE “OLD SYSTEM” OF NAMING BINARY MOLECULAR COMPOUNDS THE GENERAL RULE IS TO NAME THE LESS ELECTRONEGATIVE ELEMENT FIRST AND THE MORE ELECTRONEGATIVE ELEMENT SECOND. THE FIRST WORD OF A BINARY MOLECULAR COMPOUND IS MADE UP OF (A) THE PREFIX OF THE NUMBER OF ATOMS OF THE FIRST ELEMENT AND (B) THE NAM ...
Using mass to calculate molecular formula
... (Na+)2 SO42-; K+ NO3- ; Ca2+ (F-)2 ; (NH4+)(ClO4-) ; etc (overall neutral)The ions are held together by electrostatic attraction between the opposite charges.(Ionic Bonding). Since an ionic compound must be neutral overall there must be equal numbers of charges on the positive ions (cations) as ther ...
... (Na+)2 SO42-; K+ NO3- ; Ca2+ (F-)2 ; (NH4+)(ClO4-) ; etc (overall neutral)The ions are held together by electrostatic attraction between the opposite charges.(Ionic Bonding). Since an ionic compound must be neutral overall there must be equal numbers of charges on the positive ions (cations) as ther ...
Chemical Composition Notes
... Pure hydrogen, nitrogen, oxygen and the halogens exist as DIATOMIC molecules under normal conditions. MEMORIZE!!! Br2 I2 N2 Cl2 H2 O2 F2 P4 S8 – Carbon - diamond and graphite ...
... Pure hydrogen, nitrogen, oxygen and the halogens exist as DIATOMIC molecules under normal conditions. MEMORIZE!!! Br2 I2 N2 Cl2 H2 O2 F2 P4 S8 – Carbon - diamond and graphite ...
Balancing Chemical Equations Using Algebra
... Note: You have just created a set of simultaneous algebraic equations the solution of which is the set of whole number coefficients that satisfy this chemical equation. Step 3. Examine the mass balance equations. Which variable is the most common, that is, the variable that appears in the most equat ...
... Note: You have just created a set of simultaneous algebraic equations the solution of which is the set of whole number coefficients that satisfy this chemical equation. Step 3. Examine the mass balance equations. Which variable is the most common, that is, the variable that appears in the most equat ...
Chapter 2 - Atoms, Molecules, and Ions
... D. Compounds can be broken down further but elements cannot. A 96-4. How many hydrogen atoms are present in 0.020 moles of C2H6? A. 1.2 x 1022 B. 7.2 x 1022 C. 6.0 x 1023 A 95-1. ...
... D. Compounds can be broken down further but elements cannot. A 96-4. How many hydrogen atoms are present in 0.020 moles of C2H6? A. 1.2 x 1022 B. 7.2 x 1022 C. 6.0 x 1023 A 95-1. ...
NM Strand
... 9. Which answer indicates the correct coefficients to balance the following reaction: Al2(SO4)3 + Ca(OH)2 -> Al(OH)3 + CaSO4 10. Which answer indicates the correct coefficients to balance the following reaction: C10H8 + O2 -> CO2 + H2O 11. A solution has a pH of 5.8, what is its pOH? 12. If 15.2 g o ...
... 9. Which answer indicates the correct coefficients to balance the following reaction: Al2(SO4)3 + Ca(OH)2 -> Al(OH)3 + CaSO4 10. Which answer indicates the correct coefficients to balance the following reaction: C10H8 + O2 -> CO2 + H2O 11. A solution has a pH of 5.8, what is its pOH? 12. If 15.2 g o ...