Abeka Chemistry Test 2 Grade 11 Exam with Verified Detailed Answers.docx

Abeka Chemistry Test 2 Grade 11
Exam with Verified Detailed Answers
What is the value of Avogadro's number? -
correct answer ✅6.022 x 10^23


A molecule of the sugar fructose contains 6 carbon atoms, 12
hydrogen atoms, and 6 oxygen atoms. What is its empirical
formula? -
correct answer ✅CH(subscript 2)O


Which of the following mole ratios CANNOT be derived from the
equation 2 C(subscript 7)H(subscript 8)(g) + 9 O(subscript 2)(g)---->
7 CO(subscript 2) (g) + 4 H(subscript 2)O(g)? -
correct answer ✅4 mol C(subscript 7)H(subscript 8) : 2 mol
H(subscript 2)O


If the empirical formula of a substance is known, what additional
information is needed to calculate the molecular formula? -
correct answer ✅molar mass


What is the formula of nitrogen dioxide? -
correct answer ✅NO(subscript 2)

, Abeka Chemistry Test 2 Grade 11
Exam with Verified Detailed Answers
What is the formula of copper(I) hydroxide? -
correct answer ✅CuOH


what is the formula of calcium carbonate? -
correct answer ✅CaCO(subscript 3)


NO 3 - -
correct answer ✅nitrate ion


NH 4 + -
correct answer ✅ammonium ion


SO 4 2- -
correct answer ✅sulfate ion


Fe 2 + -
correct answer ✅iron(II) ion


phosphate ion -
correct answer ✅3-