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How many liters of H₂ are created from the reaction of 20.0 g potassium (K) with an excess of water? 200gk 1 mol H2 1 161 K 39.19/3 K 2 mgłk 22.4 LH2 1 mol H2 448/78.2=

How many liters of H₂ are created from the reaction of 20.0 g potassium (K) with an excess of water? 200gk 1 mol H2 1 161 K 39.19/3 K 2 mgłk 22.4 LH2 1 mol H2 448/78.2=

Chemistry & Chemical Reactivity
Chemistry & Chemical Reactivity
9th Edition
ISBN:9781133949640
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter4: Stoichiometry: Quantitative Information About Chemical Reactions
Section4.3: Percent Yield
Problem 2RC: 2. If only 13.6 g of methane is obtained, what is the percent yield of this...
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Enter your rounded answer, apply the significant figure rules to the final answer that is attached.

Final answer will not be 5.73

How many liters of H₂ are created from the reaction of 20.0 g potassium (K) with an excess of water? Q Q зобок 1 рабi к 39.19% K 2.mork к 448/78.2=
Transcribed Image Text:How many liters of H₂ are created from the reaction of 20.0 g potassium (K) with an excess of water? Q Q зобок 1 рабi к 39.19% K 2.mork к 448/78.2=
Significant Figure Rules All nonzero digits are significant. Zeros that appear between other nonzero digits are always significant. Zeros that appear in front of all of the nonzero digits are called left-end zeros. Left-end zeros are never significant. Zeros that appear after all nonzero digits are called right-end zeros. Right-end zeros in a number that lacks a decimal point are not significant. Right-end zeros in a number with a decimal point are significant. This is true whether the zeros occur before or after the decimal point. 1 237 has three significant figures. 1.897 has four significant figures. 39,004 has five significant figures. 5.02 has three significant figures. 0.008 has one significant figure. 0.000416 has three significant figures. 140 has two significant figures. 75,210 has four significant figures. 620.0 has four significant figures. 19.000 has five significant figures.
Transcribed Image Text:Significant Figure Rules All nonzero digits are significant. Zeros that appear between other nonzero digits are always significant. Zeros that appear in front of all of the nonzero digits are called left-end zeros. Left-end zeros are never significant. Zeros that appear after all nonzero digits are called right-end zeros. Right-end zeros in a number that lacks a decimal point are not significant. Right-end zeros in a number with a decimal point are significant. This is true whether the zeros occur before or after the decimal point. 1 237 has three significant figures. 1.897 has four significant figures. 39,004 has five significant figures. 5.02 has three significant figures. 0.008 has one significant figure. 0.000416 has three significant figures. 140 has two significant figures. 75,210 has four significant figures. 620.0 has four significant figures. 19.000 has five significant figures.
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