Explain why glass is so dangerous in the lab.

From which category of materials would you select a material best suited for building a vessel to contain liquid steel?

Explain why the air in a cool basement is relatively humid (damp) in the summer.

According to kinetic molecular theory, all collisions between molecules are elastic   Question 18 options:   True   False

A prevailing pressure of one standard atmosphere will support a column of mercury 760 mm in height. Liquid gallium has a density of 6.20 g/mL. The height of a column of liquid gallium that one standard atmosphere can support is  mm. The density of liquid mercury is 13.6 g/mL

gnment/takeCovalentActivity.do?locator=assignment-take Use the References to access important values if needed for this question. A prevailing pressure of one standard atmosphere will support a column of mercury 760 mm in height. Liquid isopropyl iodide has a density of 1.70 g/mL. The height of a column of isopropyl iodide that one standard atmosphere can support is mm. The density of liquid mercury is 13.6 g/mL. Submit Answer Retry Entire Group 9 more group attempts remaining

dmont Community Co X genow.com/ilm/takeAssignment/takeCovalentActivity.do?locator=assignment-take [References] Use the References to access important values if needed for this question. The rate of effusion of Xe gas through a porous barrier is observed to be 8.29 x 10 mol/h. 4 Under the same conditions, the rate of effusion of NH3 gas would be mol/h.

Use the References to access important values if needed for this question. Tire pressure gauges are often calibrated in pounds per square inch. An automobile tire is inflated to a pressure of 31.4 psi. Express this pressure in atmospheres and in millimeters Hg. Hint: 1 atm = 760 mmHg = 14.7 psi %3D Pressure atm %3D Pressure = mmHg

1. A student following the procedure described in this module collected the following data: mass Mg, g 0.0243 initial syringe volume, mL 1.0 final syringe volume, mL 26.5 barometric pressure, torr 754 temperature, K 298 Determination#1 The value of the gas law constant (R) is 0.0822 L.atm/mol.K  Determination #2 he volume of hydrogen gas produced by the reaction of 0.243 g of magnesium metal and collected at 750 torr and 298 K = 248 mL  The results of this experiment are greatly affected by the care with which each of the steps is completed (a) Describe the error that would occur if the magnesium were to slide into the HCl in the test tub before the system is sealed off (b) What would be the effect on the results of a rise in the room temperature from 22.0 celcius, when determination #1 was done, to 25.3 celcius, when determination #2 was made? (c) Why must the surface coating of MgO be removed prior to determining the mass of magnesium used in the experiment? (d) What would be the…

Imagine that you are riding an oxygen molecule as it moves around near a mountain top. describe what you see and experience as the oxygen molecules go about their business.