How many moles of NaOH are in a 75.89g sample? (mass= 40.01 g) (Show your work)

1.896 moles of NaOH> 1.90 moles

Explanation:

75.89 g of NaOH  |  1 mole of NaOH  

                             |  40.01 g NaOH                = 1.896 > 1.90 moles of NaOH

(75.89 g NaOH/ 40.01 g NaOH = 1.896 > 1.90 moles of NaOH

120,630,890

step-by-step explanation:

110+10=120,620+10=630,880+10=890

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.