In mammals, lactose (milk sugar) is metabolized to glucose (C6HI206), the key nutrient for generating chemical potential energy. How many grams of carbon are in 16.55 g of glucose?
PNCO 2023 School-Level Eliminations

Quiz
•
Chemistry
•
9th - 12th Grade
•
Hard
Genalyn Alice Viloria
Used 2+ times
FREE Resource
50 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
6.62 g
9.93 g
4.14 g
12.41 g
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Elemental analysis of a sample of an ionic compound showed 2.82 g of Na, 4.35 g of Ct, and 7.83 g of 0. What is the empirical formula and name of the compound? Atomic Masses: Na: 22.99 g/mol, Cl: 35.45 g/mol, O: 16.00 g/mol
NaClO
Na2ClO2
NaClO2
NaClO4
Na2ClO4
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Within the cylinders of a car's engine, the hydrocarbon octane (C8H18), one of many components of gasoline, mixes with oxygen from the air and burns to form carbon dioxide and water vapor. What are the coefficients (arranged in order of appearance) in the balanced equation for the complete combustion of octane?
_ C8H18 + _ O2 → _ CO2 + _H2O
1, 12, 8, 9
1, 24, 8, 9
2, 25, 16, 18
2, 12, 8, 9
2, 24, 16, 18
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Copper is obtained from sulfide ores, such as chalcocite, or Copper(I) Sulfide, by a multistep process. After an initial grinding, the first step is to "roast" the ore (heat it strongly with oxygen gas) to form powdered Copper(I) oxide and gaseous sulfur dioxide. How many grams of sulfur dioxide are formed when 10.0 mol of copper(I) sulfide is roasted? The molar mass of SO2 is 64.04 g/mol.
320.4 g
640.7 g
1281 g
12.81 g
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A fuel mixture used in the early days of rocketry is composed of two liquids, hydrazine (N2H4) and dinitrogen tetraoxide (N2O4), which ignite on contact to form nitrogen gas (N2) and water vapor (H2O). How many grams of nitrogen gas form when 100 g of N2H4 and 2.00 x 200 g of N2O4 are mixed?
65.6 g
182 g
131 g
91.6 g
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many hydrogen atoms are in 2.50 g of pharmacolite, CaHAsO4•2H2O (Molar Mass = 216.0)?
6.97 × 1021
2.09 × 1022
2.79 × 1022
3.48 × 1022
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A 2.50 L sample of butane gas (C4H10), measured at 22.0 ºC and 1.20 atm pressure, is combusted completely and the carbon dioxide gas collected at the same pressure and temperature. What volume of CO2 is produced?
2.50 L
9.00 L
10.0 L
22.5 L
Create a free account and access millions of resources
Similar Resources on Wayground
45 questions
Enthalpy

Quiz
•
12th Grade
50 questions
Chemistry Regent Exam-June 2010

Quiz
•
KG - University
53 questions
Nomenclature of Chemical Compounds, Acids, Hydrates, Molecular

Quiz
•
10th Grade
50 questions
Chemistry Regent Exam-June 2012

Quiz
•
9th - 12th Grade
50 questions
Aug 2025 R Chem MC

Quiz
•
12th Grade
50 questions
Latihan soal kesetimbngan dan asam basa

Quiz
•
11th Grade
49 questions
Accel Chem PC #07 NIE and Colligative Properties

Quiz
•
9th - 12th Grade
50 questions
Electrochemistry Test Review

Quiz
•
9th - 12th Grade
Popular Resources on Wayground
25 questions
Equations of Circles

Quiz
•
10th - 11th Grade
30 questions
Week 5 Memory Builder 1 (Multiplication and Division Facts)

Quiz
•
9th Grade
33 questions
Unit 3 Summative - Summer School: Immune System

Quiz
•
10th Grade
10 questions
Writing and Identifying Ratios Practice

Quiz
•
5th - 6th Grade
36 questions
Prime and Composite Numbers

Quiz
•
5th Grade
14 questions
Exterior and Interior angles of Polygons

Quiz
•
8th Grade
37 questions
Camp Re-cap Week 1 (no regression)

Quiz
•
9th - 12th Grade
46 questions
Biology Semester 1 Review

Quiz
•
10th Grade
Discover more resources for Chemistry
25 questions
Equations of Circles

Quiz
•
10th - 11th Grade
30 questions
Week 5 Memory Builder 1 (Multiplication and Division Facts)

Quiz
•
9th Grade
33 questions
Unit 3 Summative - Summer School: Immune System

Quiz
•
10th Grade
37 questions
Camp Re-cap Week 1 (no regression)

Quiz
•
9th - 12th Grade
46 questions
Biology Semester 1 Review

Quiz
•
10th Grade