On the first day of kindergarten, Terry’s teacher responds to the students every time they ask her a question. By the end of the first week, the teacher will only respond to students who are sitting quietly at their desks. At the end of the second week, the teacher will only respond to students’ questions if they are quietly seated, raise their hands, and wait to be called on before asking their questions. Terry’s teacher is using ________ to change the students’ behavior. habituation shaping punishment secondary conditioning

## On the first day of kindergarten, Terry’s teacher responds to the students every time they ask her a question. By the end of the first week, the teacher will only respond to students who are sitting quietly at their desks. At the end of the second week, the teacher will only respond to students’ questions if they are quietly seated, raise their hands, and wait to be called on before asking their questions. Terry’s teacher is using ________ to change the students’ behavior. habituation shaping punishment secondary conditioning

On the first day of kindergarten, Terry’s teacher responds to … Read More...
The concentration (M) of an aqueous methanol solution produced when 0.200 L of a 2.00 M solution was diluted to 0.800 L is __________. A) 0.800 B) 0.200 C) 0.500 D) 0.400 E) 8.00

## The concentration (M) of an aqueous methanol solution produced when 0.200 L of a 2.00 M solution was diluted to 0.800 L is __________. A) 0.800 B) 0.200 C) 0.500 D) 0.400 E) 8.00

C) 0.500
Based on the equations below, which metal is the most active? 3 2 3 2 Pb(NO ) (aq) + Ni(s)® Ni(NO ) (aq) + Pb(s) 3 2 Pb(NO ) (aq) + Ag(s)®No reaction 3 2 3 2 Cu(NO ) (aq) + Ni(s)®Ni(NO ) (aq) + Cu(s) A) Ni B) Ag C) Cu D) Pb E) N

## Based on the equations below, which metal is the most active? 3 2 3 2 Pb(NO ) (aq) + Ni(s)® Ni(NO ) (aq) + Pb(s) 3 2 Pb(NO ) (aq) + Ag(s)®No reaction 3 2 3 2 Cu(NO ) (aq) + Ni(s)®Ni(NO ) (aq) + Cu(s) A) Ni B) Ag C) Cu D) Pb E) N

A) Ni
The balanced molecular equation for complete neutralization of 2 4 H SO by KOH in aqueous solution is __________. A) 2 2H (aq) 2OH (aq) 2H O(l) + − + ® B) 2 2H (aq) 2KOH(aq) 2H O(l) 2K (aq) + + + ® + C) 2 2 4 2 4 H SO (aq) 2OH (aq) 2H O(l) SO (aq) − − + ® + D) 2 4 2 2 4 H SO (aq) + 2KOH(aq)®2H O(l) + K SO (s) E) 2 4 2 2 4 H SO (aq) + 2KOH(aq)®2H O(l) + K SO (aq)

## The balanced molecular equation for complete neutralization of 2 4 H SO by KOH in aqueous solution is __________. A) 2 2H (aq) 2OH (aq) 2H O(l) + − + ® B) 2 2H (aq) 2KOH(aq) 2H O(l) 2K (aq) + + + ® + C) 2 2 4 2 4 H SO (aq) 2OH (aq) 2H O(l) SO (aq) − − + ® + D) 2 4 2 2 4 H SO (aq) + 2KOH(aq)®2H O(l) + K SO (s) E) 2 4 2 2 4 H SO (aq) + 2KOH(aq)®2H O(l) + K SO (aq)

Which ion(s) is/are spectator ions in the formation of a precipitate of AgCl via combining aqueous solutions of 2 3 CoCl and AgNO ? A) 2+ Co and NO3− B) NO3 and Cl − − C) 2+ + Co and Ag D) Cl− E) NO3

## Which ion(s) is/are spectator ions in the formation of a precipitate of AgCl via combining aqueous solutions of 2 3 CoCl and AgNO ? A) 2+ Co and NO3− B) NO3 and Cl − − C) 2+ + Co and Ag D) Cl− E) NO3

What mass in grams of hydrogen is produced by the reaction of 4.73 g of magnesium with 1.83 g of water? 2 2 2 Mg (s) 2 H + O (l)®Mg(OH) (s) + H (g) A) 0.102 B) 0.0162 C) 0.0485 D) 0.219 E) 0.204

## What mass in grams of hydrogen is produced by the reaction of 4.73 g of magnesium with 1.83 g of water? 2 2 2 Mg (s) 2 H + O (l)®Mg(OH) (s) + H (g) A) 0.102 B) 0.0162 C) 0.0485 D) 0.219 E) 0.204

A) 0.102
The value of H° for the reaction below is -482 kJ. Calculate the heat (kJ) released to the surroundings when 38.5 g of O2 (g) reacts with excess CO. 2CO (g) + O2 (g) 2CO2 (g) A) 2.65 × 103 B) 482 C) 580 D) 65.7 E) 210

## The value of H° for the reaction below is -482 kJ. Calculate the heat (kJ) released to the surroundings when 38.5 g of O2 (g) reacts with excess CO. 2CO (g) + O2 (g) 2CO2 (g) A) 2.65 × 103 B) 482 C) 580 D) 65.7 E) 210

C) 580
The element X has three naturally occurring isotopes. The masses (amu) and % abundances of the isotopes are given in the table below. The average atomic mass of the element is __________ amu. A) 219.7 B) 220.4 C) 222 D) 218.5 E) 221.0

## The element X has three naturally occurring isotopes. The masses (amu) and % abundances of the isotopes are given in the table below. The average atomic mass of the element is __________ amu. A) 219.7 B) 220.4 C) 222 D) 218.5 E) 221.0

B) 220.4
The correct name for SrO is __________. A) strontium oxide B) strontium hydroxide C) strontium peroxide D) strontium oxygen E) strontium dioxide

## The correct name for SrO is __________. A) strontium oxide B) strontium hydroxide C) strontium peroxide D) strontium oxygen E) strontium dioxide

A) strontium oxide
The formula weight of lead (II) carbonate (PbCO3) is __________ amu. A) 207.2 B) 219.2 C) 235.2 D) 267.2 E) 273.2

D) 267.2