تجميعات Flashcards
1
Q
The molecular formula of Cesium ( Cs ) Carbonate is
A
Cs2CO3
2
Q
T or F
Rb is an example of Alkali earth metals
A
False
3
Q
Whats the empirical formula of a compound containing 27.0% S , 13.4% O , 59.6 Cl by mass ?
A
SOCl2
4
Q
The empirical formula of caffeine C8H10N4O2
A
C4H5N2O
5
Q
T or F
There are 28 protons and 26 electrons in Fe +2
A
Flase
6
Q
Calculate the percentage by mass of hydrogen in Pt Cl2 (NH3)2
A
2 %
7
Q
What is the empirical formula of a compound containing 32.0% S , 32.16% O , 35.6% Cl by mass ?
A
SO2Cl
8
Q
The empirical formula of C8H10N2O is
A
C8H10N2O
9
Q
The percent by mass of carbon in C14H9Cl5 is
A
47.3%
10
Q
There are 26 protons and 23 electrons in Fe +3
A
True
