No student devices needed. Know more
12 questions
A compound consists of 72.2% magnesium(Mg) and 27.8% nitrogen(N) by mass. What is the empirical formula? (No spaces)
How many atoms of Na make up 5.17 moles of Na?
3.1 x 1024 atoms
6.02 x 1024 atoms
1.2 x 1024 atoms
2.4 x 1024 atoms
Find the percentage composition of P in Mg3(PO4)2.
27.74% P
23.57% P
43.62% P
12.63% P
Which of the following have the same empirical formula? (Check all that apply)
C6H12O6
C4H8O4
C3H9O3
C4H10O2
Which of the following are the empirical formula for this formula: Si2F6
SiF
Si2F6
SiF3
Si6F2
What is the empirical formula of the compound shown in the image?
If a student has 1258.73g of AlCl3, how many moles and particles does the student have of the sample of AlCl3?
5.68x1024 mol & 5.68 molec AlCl3
9.44 mol & 5.68x1024 molec AlCl3
1.25x1023 molec mol & 0.705 molec AlCl3
6.44 mol & 1.25x1023 molec AlCl3
Compared to 84g of carbon monoxide (CO), 84g of ethylene (C2H4) would contain which of the following?
The same number of atoms
The same number of molecules
Fewer atoms
More molecules
Explore all questions with a free account