4unlike images produced by a convex spherical mirror, images produced by concave spherical mirrors
a. are always going to be displayed upright, not inverted
b, are located only by the mirror
c. are always going to be virtual
d. can be real or virtual depending on the object's placement

Can someone me with these questions plz.

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%

What type of interaction occurs between the r groups of valine and isoleucine in a tertiary structure? view available hint(s) what type of interaction occurs between the r groups of valine and isoleucine in a tertiary structure? salt bridge disulfide bridge hydrogen bond hydrophobic interaction