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

i think it's letter a.

the transfer of heat by electromagnetic radiation is called thermal radiation . it is usually carried out by electromagnetic waves in an energy range just below the visible spectrum, which is the infrared range.

so the answer would be radiation.

: )