Stoichiometry ASASI
Authored by NURUL MOHAMED
Chemistry
University
Used 1+ times
AI Actions
Add similar questions
Adjust reading levels
Convert to real-world scenario
Translate activity
More...
Content View
Student View
29 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Which statement correctly describes the relationship between relative atomic mass and isotopic mass?
Relative atomic mass is always equal to the mass number of the isotope.
Relative atomic mass is the average of isotopic masses weighted by their abundance.
Isotopic mass is calculated based on Avogadro's number.
Relative atomic mass and isotopic mass are always identical.
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Given two isotopes of chlorine: Cl-35 (75%) and Cl-37 (25%), what is the relative atomic mass?
35.00
35.25
35.50
36.25
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
What is the mass of 0.5 mol of Al2O3 (molar mass = 102 g/mol)?
51 g
102 g
204 g
25.5 g
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
How many atoms are in 3.0 mol of CO2?
6.022 x 10^23
1.807 x 10^24
3.0 x 10^23
5.432 x 10^24
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Determine the empirical formula of a compound with 40% C, 6.7% H, and 53.3% O.
CH2O
C2H4O2
C3H8O
C6H12O6
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Which compound has the empirical formula CH2O and a molar mass of 180 g/mol?
C6H12O6
C2H4O2
C3H6O3
CH2O
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
A gas occupies 44.8 dm³ at STP. How many moles of the gas are present?
1 mol
2 mol
0.5 mol
3 mol
Access all questions and much more by creating a free account
Create resources
Host any resource
Get auto-graded reports
Continue with Google
Continue with Email
Continue with Microsoft
or continue with
%20(1).png)
Apple
Others
Already have an account?
