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A chemical or biological hazard and how?
Chemical properties (vapor pressure, vapor density, molecular weight, relative size) and how they affect the different routes of exposure.
What exposure route is the most important?
What way can substance could enter the body through the dermal route, and why the dermal route would or would not be important.
What is methanol's vapor pressure It boils at 65.0 °C and has a heat of vaporization ΔHvap = 37.4 kJ/mol. at 22.0 °C?
Explain what is the empirical formula of a compound containing 27.88% phosphorus and 72.15% sulfur. Determine the molecular formula if the molar mass is 444.6 g/mole.
A 17.5 g sample of C2H6 (Mm = 30.07 g I mol) was maintained in a 98.6 L vessel at 290.6 K. It was compressed isothermally and reversibly until its volume had reached 12.5 L.
How many total moles of ions are released when each of the following samples dissolves completely in water. (a) 0.342 mol of K2HPO4
Draw the structure of the hexapeptide (Ala-Pro-Met-Lys-Met-Gly) showing all bonds and atoms and please label each amino acid in the sequence.
The metal is obtained from seawater in a process that includes precipitation, neutralization, evaporation, and electrolysis. How many kilograms of magnesium can be obtained from 4.18 km^3 of seawater
How many milliliters of 3.4 M NH4Cl must be added to 250 mL of 0.23 M NH3 to obtain a buffer solution having pH=9.40
What are the Celsius temperatures of Body temperature, ice freezing, water boiling, room temperature?
A sample of 0.0020 mole of HCL is dissolved in water to make a2000-mL solution. Compute the molarity of the HCL solution, the [H3O+], and the PH. For a strong acid such as HCL, the [H3O+] is the same as the molarity of the HCL solutions.
What are the different types of diuretics and their mechanism of actions?
a piece of 122 grams metal with is placed in a 50 ml graduated cylinder. determine what would be the density of the
A fossil that formed with 10,000 atoms of a radioactive parent element now contains only 1,250 atoms of that element. If the half-life of the element was 1,000,000 y, how old is the fossil
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