Calculate the number of moles of ammonia required to produce Cu(NH3)4.SO4​

Nuclear fusion is the source of energy for stars. besides hydrogen, which other element is most likely also common in stars?

How does the viscosity of magma change as magma cools?

What will most likely happen in the absence of a cell membrane? a) photosynthesis will not take place. b) the cell will not store food, water, nutrients, and waste. c) energy will not be released during cellular respiration. d) substances will pass in and out of the cell in an uncontrolled manner.