August 2017 Chemistry Regents Questions 41-50 Question Preview (ID: 59771)

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Which statement compares the energy terms in these two equations?

a) Equation 1 shows 2.2 x 10^5 times more energy being absorbed.

b) Equation 2 shows 2.2 x 10^5 times more energy being absorbed.

c) Equation 1 shows 2.2 x 10^5 times more energy being released.

d) Equation 2 shows 2.2 x 10^5 times more energy being released.

Which statement classifies the two compounds?

a) Both compounds are ioni

b) Both compounds are molecular

c) Compound 1 is ionic, and compound 2 is molecular.

d) Compound 1 is molecular, and compound 2 is ionic.

Which Lewis electron-dot diagram represents the bonding in potassium iodide?

a) 1

b) 2

c) 3

d) 4

Compared to a solution with a pH value of 7, a solution with a thousand times greater hydronium ion concentration has a pH value of

a) 10

b) 7

c) 3

d) 4

If an acid is defined as an H+ donor, what is the acid in the forward reaction?

a) OH-(aq)

b) H2O(ℓ)

c) NH3(g)

d) NH4+(aq)

In a titration, 5.0 mL of a 2.0 M NaOH(aq) solution exactly neutralizes 10.0 mL of an HCl(aq) solution. What is the concentration of the HCl(aq) solution?

a) 1.0 M

b) 2.0 M

c) 10. M

d) 20. M

Atoms of which element react spontaneously with Mg^2+(aq)?

a) chromium

b) barium

c) iron

d) zinc

As a 15.1-gram sample of a metal absorbs 48.75 J of heat, its temperature increases 25.0 K. What is the specific heat capacity of the metal?

a) 0.129 J/g•K

b) 1.95 J/g•K

c) 1.95 J/g•K

d) 7.74 J/g•K

What is a chemical name of this compound?

a) propane

b) propanal

c) propanol

d) propanone

Which type of reaction is represented by this equation?

a) addition

b) esterification

c) polymerization

d) substitution

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