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1. A 3.53-gsample of aluminum completely reacts with oxygen to form 6.67gof aluminum oxide. Use this data to calculate the mass percent composition of aluminum in aluminum oxide.
2. A 1.912-g sample of calcium chloride is decomposed into its constituent elements and found to contain 0.690 gCa and 1.222 gCl.
Calculate the mass percent composition of Ca and Cl in calcium chloride.
Enter your answers numerically separated by a comma.
3. A 1.45-g sample of phosphorus burns in air and forms 2.57 g of a phosphorus oxide.
Calculate the empirical formula of the oxide.
Express your answer as a chemical formula.
4. Copper (II) fluoride contains 37.42 % F by mass.
Use this percentage to calculate the mass of fluorine in grams contained in 34.5 g of copper (II) fluoride.
Gallery is to be applied to a container growing area for reemergence weed control. How much Gallery will be needed? Provide your answer in pounds and in ounces.
Anthony’s performance has been lower in the last six months than his average in the previous three years. Anthony’s supervisor wants to understand why Anthony’s performance is slipping. It is obvious that Anthony’s ability has not changed, so the sup..
Why is the web so important to business (technical) communications today? What are some of the ways that the web is used for technical communications?
The Health Of Each Company ()APPLE, ALIBABA, AIRBUS INFO FOR 2014 AND 2015. Analyze the Return on Equity (ROE) for the last 2 years using the DuPont method.
How do glucocorticoids enable the body to deal appropriately with stress?
How common is police deviance and how can it be controlled
What is the history of "smart cards"? Which industries have utilized smart card technology successfully? Explain the concept of "stored value" as it applies to smart card technologies and describe how this feature might be utilized by consumers to ..
Who are the members of the board of directors and what is the significance of their role at the bank? How has the Sarbanes-Oxley Act and other legislation impacted financial reporting for the bank?
What are the differences in roles and educational preparation of psychologists, psychiatrists and psychiatric social workers?
A Venn diagram is a useful tool to show the differences and similarities during a comparison such as this. Learn abouyt creating a Venn diagram in word. You can also use Google and Youtube to find a favorite guide
Which of the following offers a valuable model for EMS to consider when trying to reduce injury-related morbidity and mortality?
prepare a two- to three-page paper that addresses the following pointsa. identify at least three alternative exit
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