HELP QUICK LOTS OF POINTS When 0.06 moles of lead(II) nitrate are dis- solved in enough water to make 656 mililiters of solution, what is the molar concentration of nitrate ions?
Answer in units of M.

When 225mg of anthracene, c14h10(s), was burned in a bomb calorimeter the temperature rose by 1.75k. calculate the calorimeter constant. by how much will the temperature rise when 125mg of phenol, c6h5oh(s), is burned in the calorimeter under the same conditions? (δch< (c14h10,s)=–7061 kj mol−1.)

Use the table to identify the phase and phase changes of the elements under the given conditions. write the name of the substance, phase, or phase change

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%