21) In which list are the ions arranged in order of decreasing size? a) S-2, Br-, K+, Ca+2 b) Br-, S-2, K+, Ca+2 c) K+, Ca+2, S-?, Br- d) Ca+2, K+, S-2, Br-

Why are pipes bursting in the in extremely cold weather?

Apiece of metal with a length of 1.42 cm was measured using four different instruments. which of the following measurements is the most accurate?

Ican determine the molar mass of an element by looking on the under the atomic mass for the element. for example the molar mass of phosphorus is 30.974 grams/mole. avogadro’s number tells me the amount of representative particles in 1 mole of any substance. this means 12.011 gram sample of carbon and a 32.0 gram sample of sulfur have the same number of atoms.