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What is the percent of H2O in a sample of a hydrate whose mass is 1.1290 g if the mass of water in the sample was 0.1660 g?
Aluminum is mined as the mineral bauxite, which consists primarily of Al2O3 (alumina). The aluminum can be refined by heating the bauxite to drive off the oxygen
The half-life of 90Sr is 29 years. What fraction of the atoms in a sample of 90Sr would remain 175 years later
In the laboratory you are asked to make a 0.731 m magnesium bromide solution using 375 grams of water.
If 3.54 g of Ba3(PO4)2 are produced by the reaction BaCl2(aq) + Na3PO4(aq) --> NaCl(aq) + Ba3(PO4)2(s), how many grams of the starting material, BaCl2.
Describe how the functional units for beta carotene, xanthophyll, chlorophyll A, and chlorophyll B are different. Be sure to identify the subunits that adhere to paper during chromatography.
The maximum mass of chloroform that can be adsorbed by the fiber after a 30 minute exposure is 350 ng. The extraction efficiency for chloroform utilizing the SPME method is 85% throughout the entire concentration range that can be determined. The ..
In relation to cross contamination, should cooked burgers be transported on the same plate from when they were raw? Explain.
Come up with guess as well as then confirm a mechanism that is consistent with the experimentally found reaction rate for the subsequent reaction- 2A+B -> A2B
a 184-mg sample of na2co3 is dissolved in h2o to give 3.00l of solution.nbsp what is the concentration of na in parts
Write one overall equation, using an alkali metal ion and a nitrate ion as spectator ions if needed, for the following net ionic equation: H+(aq) + OH-(aq) ? H2O(l)
Aqueous hydrochloric acid reacts with zinc metal to yield hydrogen gas and aqueous zinc chloride. Write a net ionic equation for the process: 2 HCl(aq) + Zn(s) ? H2(g) + ZnCl2(aq)
What is the volume (L) of a sample of gas when 4.50 grams of H20(g) and 35.0g of Xe(g) at 650mmHg are mixed at 200 degrees celsius
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