Calculate the pressure exerted on the ground by a roller that applies 22000 N of force over an area of 1.1 m square. Write L if the word belongs to Lithosphere, H if it is under Hydrosphere, B if it's under Biosphere, A if its Atmosphere.1. Climate 2. Asteroid 3. Ear … How is protein created in a cell? Please answer this properly identify and describe the structure of the organs composing the cardiovascular system Answerobserve-Research-Hypothesize-Test-Analyze-conclude- what are the positive and negative in the environment? A spherical ball has a radius of 6 centimeter. Calculate the volume of the ball. wag po sana fonts yung answer and with solution. thank you! A spherical ball has a radius of 6 centimeter. Calculate the volume of the ball. what foods and drinks should be taken to keep the appendicitis healthy? Calculate the pressure exerted on the ground by a roller that applies 22000 N of force over an area of 1.1 m square. Write L if the word belongs to Lithosphere, H if it is under Hydrosphere, B if it's under Biosphere, A if its Atmosphere.1. Climate 2. Asteroid 3. Ear … How is protein created in a cell? Please answer this properly identify and describe the structure of the organs composing the cardiovascular system Answerobserve-Research-Hypothesize-Test-Analyze-conclude- what are the positive and negative in the environment? A spherical ball has a radius of 6 centimeter. Calculate the volume of the ball. wag po sana fonts yung answer and with solution. thank you! A spherical ball has a radius of 6 centimeter. Calculate the volume of the ball. what foods and drinks should be taken to keep the appendicitis healthy?
If you're seeing this message, it means we're having trouble loading external resources on our website. If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked. The percent composition of a compound can also be determined from the formula of the compound. The subscripts in the formula are first used to calculate the mass of each element in one mole of the compound. This is divided by the molar mass of the compound and multiplied by \(100\%\). \[\% \: \text{by mass} = \dfrac{\text{mass of element in} \: 1 \: \text{mol}}{\text{molar mass of compound}} \times 100\% \nonumber \] The percent composition of a given compound is always the same, given that the compound is pure. Dichlorine heptoxide \(\left( \ce{Cl_2O_7} \right)\) is a highly reactive compound used in some organic synthesis reactions. Calculate the percent composition of dichlorine heptoxide.
Percent composition can also be used to determine the mass of a certain element that is contained in any mass of a compound. In the previous sample problem, it was found that the percent composition of dichlorine heptoxide is \(38.76\% \: \ce{Cl}\) and \(61.24\% \: \ce{O}\). Suppose that you needed to know the masses of chlorine and oxygen present in a \(12.50 \: \text{g}\) sample of dichlorine heptoxide. You can set up a conversion factor based on the percent by mass of each element. \[12.50 \: \text{g} \: \ce{Cl_2O_7} \times \dfrac{38.76 \: \text{g} \: \ce{Cl}}{100 \: \text{g} \: \ce{Cl_2O_7}} = 4.845 \: \text{g} \: \ce{Cl} \nonumber \] \[12.50 \: \text{g} \: \ce{Cl_2O_7} \times \dfrac{61.24 \: \text{g} \: \ce{O}}{100 \: \text{g} \: \ce{Cl_2O_7}} = 7.655 \: \text{g} \: \ce{O} \nonumber \] The sum of the two masses is \(12.50 \: \text{g}\), the mass of the sample size.
Barium fluoride is a transparent crystal that can be found in nature as the mineral frankdicksonite. Determine the percent composition of barium fluoride. Answer a: 78.32% Ba and 21.67% FSummary
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What information do you need in order to determine the percent composition by mass of hydrogen?
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