11) Br2 + NaF  F2 + NaBr

12) HOH + PbCl2 Pb(OH)2 + HCl

13) KBr + Al2(SO4)3  AlBr3 + K2SO4

14) C2H6 + O2  CO2 + H2O

15) CaCl2+ Na3PO4  Ca3(PO4)2 + NaCl

16) Be + Cl2  BeCl2

17) HCl + Ga  GaCl3 + H2

18) F2 + N2  NF3

19) CaO + Li2Se  CaSe2 + Li2O

20) NaCl + H2SO4  NaSO4 + HCl
please solve as many as you can

For the reaction shown, calculate how many moles of no2 form when each of the following completely reacts. 2n2o5(g)→4no2(g)+o2(g) part a 1.0 mol n2o5 express your answer using two significant figures. nothing mol m o l request answer part b 5.4 mol n2o5 express your answer using two significant figures.

The human activities in two locations are described below: location a: rampant use of plastic containers location b: excessive use of pesticides and fertilizers which statement is most likely true? location a will have poor air quality because plastic is biodegradable. location a will experience water scarcity because plastic absorbs moisture. the population of honeybees will increase in location b because production of crops will increase. the population of fish in location b will decrease because the water is contaminated.

Consider the following reaction at equilibrium: c(s)+h2o(g)⇌co(g)+h2(g) predict whether the reaction will shift left, shift right, or remain unchanged upon each of the following disturbances. a) c is added to the reaction mixture. b) h2ois condensed and removed from the reaction mixture c) co is added to the reaction mixture d) h2 is removed from the reaction mixture.