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

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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

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

a) chromium

b) barium

c) iron

d) zinc

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

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)

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

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

a) 1

b) 2

c) 3

d) 4

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 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.

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