Moms old lincoln has a mass of 1800 kg. what is the weight of the old heap? (gravity=9.8 m/s/s)

Which statement about the stamps is correct?

Ineed this asap part i: scientific method what is the difference between science and pseudoscience? what is the scientific method?

Select all that apply. using a value of ksp = 1.8 x 10-2 for the reaction pbcl2 (s) pb+2(aq) + 2cl -(aq). the concentration of the products yield a ksp of 2.1 x 10-2: