Na2SiO3 (s) + 8 HF (aq) H2SiF6 (aq) + 2 NaF(aq) + 3H2O (l) 1. How many moles of HF are need to react with 0.600 mol of Na2SiO3?

2. How many grams of NaF form when 0.800 mol of HF reacts with excess Na2SiO3?

3. How many grams of Na2SiO3 can react with 0.900 g of HF?

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.

i'm pretty sure it is letter c.) car

b) nuclear ive learned that in a pedtrodic table