Jeff followed to procedure for Experiment 4, and collected the following data, which he recorded on his "Data and Calculations" sheet: -the mass in grams of the HCl( aq) used by Jeff in this experiment is 2.01 -the mass in grams of the reactants used in Jeff's experiment is 12.54 -the mass in grams of Jeff's products, after the reaction was complete is 11.70 -the mass in grams of the CO 2 lost in Jeff's reaction is 0.84 -1.9E-2 of CO 2 were lost in the reaction -1.9E-2 moles of X 2CO 3 were used in the reaction Questions: 1)What is the molar mass (in g/mol) of X 2CO 3 ? Be sure to round off your answer to the correct number of significant figures! 2)What is the molar mass of the unknown alkali metal atom X ? Type your answer to the correct number of significant figures
States of Matter
The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
Jeff followed to procedure for Experiment 4, and collected the following data, which he recorded on his "Data and Calculations" sheet:
-the mass in grams of the HCl( aq) used by Jeff in this experiment is 2.01
-the mass in grams of the reactants used in Jeff's experiment is 12.54
-the mass in grams of Jeff's products, after the reaction was complete is 11.70
-the mass in grams of the CO 2 lost in Jeff's reaction is 0.84
-1.9E-2 of CO 2 were lost in the reaction
-1.9E-2 moles of X 2CO 3 were used in the reaction
Questions:
1)What is the molar mass (in g/mol) of X 2CO 3 ? Be sure to round off your answer to the correct number of significant figures!
2)What is the molar mass of the unknown alkali metal atom X ? Type your answer to the correct number of significant figures
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