Then you will multiply the number of moles by 6.022×1023formula units/mol . To determine the molar mass of a compound, add the atomic weight on the periodic table in g/mol times each element's subscript. Since the formula unit CaO has no subscripts, they are understood to be 1
Answer: compound
Explanation:
Element is a pure substance which is composed of atoms of similar elements.It can not be decomposed into simpler constituents using chemical reactions.Example: Copper 
Compound is a pure substance which is made from atoms of different elements combined together in a fixed ratio by mass.It can be decomposed into simpler constituents using chemical reactions. Example: water 
Mixture is a substance which has two or more components which do not combine chemically and do not have any fixed ratio in which they are present. Example: Air
Answer:
Polyester
Polyester, a class of synthetic polymers built up from multiple chemical repeating units linked together by ester (CO-O) groups. ...
Polyesters most commonly are prepared from a condensation reaction between an organic alcohol (containing hydroxyl [OH] groups) and a carboxylic acid (containing carboxyl [COOH] groups). hope this helps!!!!!
Explanation:
<span>To find: Sample error in percent
Solution:
Formula:
((Experimental value-theoretical value)/theoretical value)*100
where, theoretical value = 100°c
and, experimental value = 102°c (sample 1) 99.2°c (sample 2)
Sample error (in percentage) when boiling level was 102°c = ((102°c-100°c)/100°c)*100 = 2%
Sample error (in percentage) when boiling level was 99.2°c = ((99.2°c-100°c)/100°c)*100 = -0.8%</span>
