My notes a sample that contains only manganese(ii) carbonate (mnco3, 114.95 g/mol) and iron(iii) carbonate (fe2(co3)3, 291.73 g/mol) weighs 0.1667 g. when it is dissolved in excess acid, 0.0665 g of carbon dioxide (co2, 44.01 g/mol) is liberated. what percentage, by mass, of manganese(ii) carbonate did the sample contain? assume all the carbon originally present is converted to carbon dioxide.

Will give brainliest it is a lab from k12 here is the linkfor each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table. type your answer here. (score for question 3: of 5 points) were there any metallic compounds that did not react with either the acid or the base? write the type of metal, based on your examination of the periodic table. type your answer here. (score for question 4: of 5 points) make a general statement about the reactivity of the metals in this experiment. type your answer here.

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.

What happened to the amount of carbon dioxide in the atmosphere from 2010–2017?