If the reaction of 4.50 moles of sodium with excess hydrofluoric acid produced an 85.0% yield of hydrogen gas, what was the actual yield of hydrogen gas? unbalanced equation: na + hf “yields”/ naf + h2 1.91 mol h2 2.25 mol h2 2.65 mol h2 3.82 mol h2

First  write a balanced  chemical  equation
that  is  2Na +2Hf  --->2Naf  +H2
This  implies  that  to  moles  2 of  Na  reacted  with 2 moles  of HF  to  form  2 moles  of  Naf  and  1  mole  of  H2
thus  the  mole  of  H2  =4.50  x1/2= 2.25moles  of  H2

If the water vapor content stays the same and the temperature drops, then the relative humidity increases. its vise versa.if the water vapor content stats the same and the temperature rises, the relative humidity decreases. so, yes, i'd say that temperature and humidity have a strong relationship.

Its strengthits conductivity of heat and electricity its shiny colourmalleable and ductility