One difference between humans and bacteria is that a) humans are living, but bacteria are non-living. b) bacteria are composed of cells, but humans are not. c) humans are composed of cells, but bacteria are not composed of cells. d) humans are composed of many cells, but bacteria are composed of a single cell.

The answer is D. ) humans are composed of many cells, but bacteria are composed of a single cell.

I would've chose A but the scientist consider bacteria to be alive

And d is one of the bassics of cell knowledge but i could be wrong if so sorry

1. for the first question, we must find the mass of the anhydrous salt, mgso₄. the molar mass for mgso₄·7h₂o is 246.47 g/mol, while that of mgso₄ is 120.37 g/mol.7.834 g mgso₄·7h₂o * 1 mol mgso₄·7h₂o/246.47 g * 1 mol mgso₄/1 mol mgso₄·7h₂o * 20.37 g mgso₄/mol = 0.647 g mgso₄

2. mass of water = mass of sample - mass of anhydrous salemass of water = 7.834 - 0.647 = 7.19 gpercent water in hydrate = 7.19/7.834 * 100 = 91.74%

im pretty sure its b