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Many metals are not found in nature in their elemental form, but in minerals which are a combination of elements. The metal is extracted by various means from these minerals. Sphene is a mineral containing titanium (Ti) and has the empirical formula CaTiSiO5. Calculate the proportion by mass of titanium in Sphene. Give your answer as a percentage to 2 significant figures. You will need to consult the Periodic Table in Book 4, page 48, to obtain the relative atomic masses of the elements in the mineral.
Cyclopentadine (C5H6) reacts with itself to form dicylopentadiene (C10H12). The following data were collected as the reaction proceeded.
4- A student measured the diameter of a sphere and determined the average value. His measyrements are 5.17cm , 5.16 cm cm and 5.17 cm if the diameter is 6.18cm what can be said about the student's results
calculate the heat released when 2.57 l of cl2g with a density of 1.88 gl reacts with an excess of sodium metal at
Indicate whether the following balanced equations involve oxidation-reduction. If they do, identify the elements that undergo changes in oxidation number.
How many grams of O2 will dissolve in 1.75L of H2O that is in contact with air where partial pressure of O2 is 0.209atm?
How many grams of carbon dioxide are produced from the burning of 1,368 g of sucrose (C12H22O11) according to the following equation
at 665 degc keq is 0.234 for the following reaction4as bg ?2cs dgif b gas at 0.221 bar is injected into a container
How many grams of sucrose must be added to 552g of water to give a solution with a vapor pressure 2.o mmHg less than that of pure water at 20 celsius?
If fuel mixtures are required to contain 3.0 oxygen by mass, how many grams MTBE must be present in each 110 gasoline.
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if 280 nm wavelenght light were used instead of (still 30mJ) how would the experimental result change consifer both the numbers and the energy of the electrons
A solution of 16.1 g of an unknown solute in 600 grams of water boils at 100.28 C. What is the molar mass of the solute
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