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Suggest a second method suitable for determine the free calcium ions on a similar sample of bood.in each cases suggest if the sample needs pretreatment or if it could be measured directly.
The equation for the reaction is S + O2= SO2 how much sulfur(in tons) present in the original materials would result in that quantity of SO2?
A car travels at 58.0 miles per hour and gets 10.0 kilometers per liter of gasoline. How many gallons of gasoline are needed for a 1.00 hour trip?
What volume of sodium thiosulfate and water are needed to make 250 mL an approximate 0.10 M solution starting with 1.0 M sodium thiosulfate solution.
While in Europe, if you drive 105km per day, how much money would you spend on gas in one week if gas costs 1.10 euros per liter and your car's gas mileage is 22.0mi/gal ? Assume that 1euro=1.26doll
How many grams of sodium succinate (MW=140 g/mol) and disodium succinate (MW=162 g/mol) must be added to 1L of water to produce a solution with pH=6.0 and a total solute concentration of 50 mM. The
Calculate the partition coefficient for the compound between hexane and water (Kphexane/water). Your answer should reflect the proper number of significant figures.
What was the difference in kilometers between the two altitudes?& ; How low did the probe go?
A copper refinery produces a copper ingot weighing 121 lb. If the copper is drawn into wire whose diameter is 8.00 mm, how many feet of copper can be obtained from the ingot?
What is the normal boiling point (in C) of a solution prepared by dissolving 1.50 g of aspirin (acetylsalicylic acid, C9H8O4) in 75.00 g of chloroform (CHCl3)? The normal boiling point of chloroform
A piece of metal with a mass of 168 g is placed in a 50 mL graduated cylinder. The water level rises from 20. mL to 38 mL. What is the density of the metal?
what is the mass, in kilograms, of Avogadro's number of olympic shot put balls if each one has a mass of 16lb? How does this compare with the mass of Earth, 5.98x10^25 kg?
If desalinated water costs 2350 per acre-foot, how much does desalinated water cost per liter? How much would it cost one household per day if it were the only source of water?
Why is it important for international managers to consider the impact of their decisions on regional cultures and organizational cultures?
A fuel gas containing 22% CO, 13% CO and 65% N2 by volume is combusted with theoretic amount of air in a furnance to heat solid burden material.
Draw the lewis structure of ClO3- by placing atoms on the grid and connecting them with bonds. Include all lone pairs of electrons. Show the formal charges of all atoms in the correct structure.
Our quality control department is being moved to a different location. Determine the kernel density of each brand and relate it to water content.
A sealed-end water manometer attached to an air duct reads 1598 cm. An open-end water manometer attached to the same duct reads 556.2 cm. What is the absolute pressure in the duct (atm)?
A chemist wanting to determine the molecular formula of pseudolaric acid A burned 1 g of the compound in an elemental analyzer. The products of the combustion were 2.492 g of CO2 and 0.6495 g of H2O
While in Europe, if you drive 103km per day, how much money would you spend on gas in one week if gas costs 1.10 euros per liter and your car's gas mileage is 34.0mi/gal ? Assume that 1euro=1.26 dol
Draw the structure of (S)-2-pentanol and products of its reaction with the following reagents. Indicate stereochemistry at any stereogenic center present in the product.
When 26.4g of carbon were burned in the presence of 87.0g of oxygen, 16.6g of oxygen remained unreacted. What mass of carbon dioxide was produced?
An archeologist finds a huge monolith in the desert. In order to estimate the weight of this object. Determine the mass of the monolith in pounds, assuming it is of uniform composition.
Describe how solid hexachloroethane would behave while carrying out a melting point determination at atmospheric pressure (760 torr) in a capillary tube open at the top.
An aqueous solution contains 13.5% NaCl by mass. What mass of water (in grams) is contained in 2.1L of the vapor above this solution at 55 °C? The vapor pressure of pure water at 55 °C is 118 torr.