A wooden artifact from an ancient culture has a 14C activity of 38.0 counts per minute. A new piece of wood (age zero) has a 14C activity of 58.2 counts per minute. The half-life of 14C is 5715 years. How old is the artifact?

What type of reaction is zn + cucl2 → cu + zncl2?

Cucl2 + 2nano3 cu(no3)2 + 2nacl what is the percent yield of nacl if 31.0 g of cucl2 reacts with excess nano3 to produce 21.2 g of nacl? 49.7% 58.4% 63.6% 78.7%

Insoluble sulfide compounds are generally black in color. which of the following combinations could yield a black precipitate? check all that apply. na2s(aq)+kcl(aq) li2s(aq)+pb(no3)2(aq) pb(clo3)2(aq)+nano3(aq) agno3(aq)+kcl(aq) k2s(aq)+sn(no3)4(aq)