In this equation 2 K + 1 MgBr2 → 2 KBr + 1 Mg. If you produce 7 mols of KBr, how many mols of MgBr2 did you need? If I have 2 moles of MgBr2, how much KBr can I make in moles?

A)

1 mol MgBr2: 2 mol KBr

x mol MgBr2: 7 mol KBr

x＝3.5 mol

B)

1 mol MgBr2: 2 mol KBr

2 mol MgBr2: y mol KBr

y＝4 mol

because u need two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei to form isotopes.

so since they all have the same shape? i mean maybe because m& m and reeses are both chocolates