Which of the following chemical equations is balanced? 2 Al + 2 CuO > A1,0, + 2 Cu
Fe, 0, + 3C --> 2Fe + 3 CO,
2 SO, + 02 S0, + 0, ---> 2 SO,
2 Ag,0 > 2 Ag + O2> 02

What must occur for air masses to form fronts

Jose and eric were given four samples in lab. the results of their analysis are shown in the table. based on the data they collected, which sample is most likely a metal?

Ascientist measures the speed of sound in a monatomic gas to be 449 m/s at 20∘c. what is the molar mass of this gas?