p3, mass n03 %3D

Arrange the quantities from largest to smallest in terms of mass: E 1.35 moles of Cu = 2.51 x 1024 molecules of B = 150 g of Ca = 2.5 moles of Ag

One form of asbestos called chrysotile is considered to be a human carcinogen. Mass analysis shows that the composition of chrysotile is 26.3% Mg, 20.2% Si, 1.45% H, and the remainder of the mass is oxygen. Determine the empirical formula of chrysotile. ( Type in the formula without spaces or subscripts in the order it appears in the problem. As in Mg1Si2H3O4)

What is the mass percentage composition of the elements in the following compounds? Round your answer to the nearest tenth. Potash, K2CO3 ___% K ___% C ___% O Gypsum, CaSO4 ___% Ca ___% S ___% O Saltpeter, KNO3 ___% K ___% N ___% O Caffeine, C8H10N4O2 ___% C ___% H ___% N ___% O    (Please type answer no write by hend)

The class of ternary compounds called carboranes (containing the elements carbon, boron and hydrogen) have played a prominent role in many areas of fundamental chemical research. In particular, they have provided many interesting examples for testing theories on chemical bonding and structure. A particular carborane has the following mass percentages: 21.30%C and 67.09%B. What is the empirical formula of this compound? Choose appropriate coefficients in the formula below. C B H

This is the chemical formula for methyl acetate: (CH3)₂ CO₂. Calculate the mass percent of carbon in methyl acetate. Round your answer to the nearest percentage. %

The human body contains 63% H, 25.5% O, 9.45% C, 1.35% N, 0.31% Ca and 0.22% P, plus trace elements present in smaller quantities. Are these mole or mass percents? How many grams of each element are present in a 5-kg baby? What is the mass of deuterium in the baby if deuterium naturally constitutes about 0.014% of all hydrogen atoms?

01.)What is the molecular formula of a compound with the empirical formula As2O5and a formula mass of 459.678 amu?     2.)  What is the molecular formula of a compound with the empirical formula C5H7 and a formula mass of 162.236 amu?