ACS EXAM (2024 version) Practice Questions and Answers
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Module
ACS Chemistry
Institution
ACS Chemistry
ACS EXAM (2024 version) Practice
Questions and Answers
A 20.0 g sample of mercury(II) oxide (HgO, M = 216.6)
is heated strongly, causing it to decompose to metallic Hg and O2 gas. What volume of
O2 gas is produced
(measured at STP)?
(A) 1.03 L
(B) 2.07 L
(C) 4.14 L
(D) 14.0 L - ️️ Corr...
Dissolution of which salt in water results in a decrease in the temperature of the
solution?
A) KHSO4
(B) NaOH
(C) AlCl3
(D) NH4NO3 - ✔️✔️Correct-D
What is observed when equal volumes of 0.1 M aqueous HCl and 0.01 M aqueous
Na2SO3 are mixed?
(A) Colorless solution and a white precipitate
(B) Colored solution and a white precipitate
(C) Colorless solution and a colored precipitate
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