Perfectly possible. You can use up to eight of them.
You just have to change the address jumpers. If the "backpack" module does not have address jumpers (but it likely does), you have to identify the address select pins on the chip and jumper those accordingly which admittedly, is a trifle more challenging.
Of course if you were to disclose the link to which module you are using, or even a (decent, perfectly focused and posted at no more than 1024 by 768 resolution) photograph of the backpack, it would be more definite to advise.