Find the mass in 2.6 mol of lithium bromide. (hint:   you need to write the formula)

The mass of 2.6 mol of Lithium bromide is 225.797 g.

The Lithium bromide has the molecular formula: LiBr.

The molecular mass of the LiBr will be the sum of the molar mass of Li and Br.

The molecular mass of LiBr = molar mass of Li + molar mass of Br.

The molar mass of Li = 6.941 u

The molar mass of Br = 79.904 u

The molecular mass of LiBr = 6.941 u + 79.904 u

The molecular mass of LiBr = 86.845 g/mol.

Moles =

weight = moles molecular weight

weight of LiBr = 2.6 86.845 g

Weight of 2.6 moles LiBr = 225.797 g.

The mass of 2.6 mol of Lithium bromide is 225.797 g.

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i believe you are right for all except the 3rd ( look at sqdancefan his answer is much better)

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prevailing winds carry air toward the mountain range. as the air rises up over a mountain range, the air cools, water vapor condenses, and clouds form. on this side of the mountains, called the windward side, precipitation falls in the form of  rain  or snow. this dry air produces a  rain shadow.