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Consider the temperature change, together with the volume and concentration of the acid and base, noted in the HAZMAT team's response regulation information. Predict how each of the following variations would affect the observed temperature change. Explain your predictions.(a) using 100 mL 1M hydrochloric acid and 100mL 1M sodium hydroxide
(b) using 50 mL 2M hydrochloric acid and 50 mL 2M sodium hydroxide
(c) using 25 mL 1M hydrochloric acid and 75 mL 1M sodium hydroxide
(d) using 25 mL 1M sulfuric acid and 75 mL 1M sodium hydroxide
If the average speed of an oxygen molecule is 4.05multiplied by 104 cm/s at 25°C, what is the average speed of a CO2 molecule at the same temperature?
There are 86,472 houses in the county and the county occupies a space totaling 475 square miles. How many square miles of housing are present in Chem county?
The density of mercury (Hg, a liquid metal) is 13.6 g/mL. What volume would 305.4 grams of mercury occupy
A 486 mL sample of water was cooled from 50.0°C to 10.0°C. Assuming a specific heat of 4.184 J/K g and a density of 1.00 g/mL, find the amount of heat transferred from the water to the surroundings.
we place an excess ( more than can dissolve) of PbCl2 into 100 ml. of water and find that at equilibrium [Cl]=0.032 M . Calculate kc for the following reaction : PbCl2 = Pb+2Cl
Suppose that you were to fill a 1L beaker with only 200 mL of water and it is not deep enough to make the water level inside and outside the graduated cylinder the same.
A cylinder of oxygen gas contains 26.4 g of O2. Another cylinder, twice the volume of the cylinder containing oxygen (and at the same conditions of pressure and temperature), contains CO2 gas.
At 80 °C the vapor pressures of pure liquids X, Y, and Z are 385, 190, and 66 mm Hg, respectively. What pressure must be exerted on the surface of a solution
For HCB, log Kow = 6.6. What would be the predicted concentration (ppm) of HCB due to bio-concentration in the fat of fish that swim in waters containing 0.000010 ppm of the chemical?
The highly reactive OH radical (a species with an unpaired electron) is believed to be involved in some atmospheric processes. The bond enthalpy for the oxygen-to-hydrogen bond in OH as 460 kJ/mol. What is the longest wavelength (in nm) of radiati..
What are the active ingredients & determine what possible tests to perform to identify each active ingredient. (what is the expected result?) - can't use melting points, boiling points, burning of solids, benedict's solution and tasting.
Which of the following will not have ionic bonds?
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