June 2024 Chemistry Regents Questions 31-40 Question Preview (ID: 63424)

The Questions In This Practice Exam Are Thoughtfully Crafted To Assess Your Knowledge And Skills. They Cover A Range Of Topics And Formats, Offering A Valuable Opportunity For Self-assessment And Preparation. TEACHERS: click here for quick copy question ID numbers.

Answers? Play games to get them!

Which ion has the greatest mass?

a) A

b) E

c) G

d) Z

The mass of a sample of nickel is determined to be 20.40 grams. How many significant figures are used to express this mass?

a) 1

b) 2

c) 3

d) 4

What is a chemical name for the compound PbO2?

a) 1

b) 2

c) 3

d) 4

Which formula is the empirical formula for ethane, C2H6?

a) CH

b) CH3

c) C2H6

d) C4H12

Which mass of O2(g) reacts completely with 5.6 grams of CO(g) to produce 8.8 grams of CO2(g)?

a) 1.6 g

b) 2.8 g

c) 3.2 g

d) 14.4 g

Which numerical setup can be used to calculate the formula mass of C9H11NO2?

a) 9 u + 11 u + 1 u + 2 u

b) 12 u + 1 u + 14 u + 16 u

c) 9(6 u) + 11(1 u) + 1(7 u) + 2(8 u)

d) 9(12 u) + 11(1 u) + 1(14 u) + 2(16 u)

Which compound is most soluble in water?

a) 1

b) 2

c) 3

d) 4

Which combination of solute and solvent will form a saturated solution when thoroughly mixed at 20.°C?

a) 15 grams KClO3 in 100. grams H2O

b) 20. grams KCl in 100. grams H2O

c) 30. grams NaCl in 100. grams H2O

d) 35 grams KI in 100. grams H2O

A solution has a mass of 2000. grams and contains 0.050 gram of dissolved solute. What is the concentration in parts per million of this solution?

a) 5.0 ppm

b) 25 ppm

c) 50. ppm

d) 100. ppm

A person with a body temperature of 37°C holds a cup of hot water in their hand. The temperature of the cup is 44°C. The air temperature is 22°C. Which phrase describes a heat transfer that occurs in this system?

a) from the air to the cup

b) from the hand to the cup

c) from the air to the hand

d) from the cup to the hand

Play Games with the Questions above at ReviewGameZone.com
To play games using the questions from above, visit ReviewGameZone.com and enter game ID number: 63424 in the upper right hand corner or click here.