Inorganic Chemistry Answers

An evaporating dish weighs 44.3170 grams. After 8.5 mL of salt water was added to the dish, the combination of the dish and salt water weighed 52.987 grams. The dish was then heated until a constant mass of 44.5990 grams was obtained. What was the mass percent of salt dissolved in the salt water

Question 5

Express the following number in scientific notation. Do NOT include unit in your answer. Please use e to refer to power of 10. For example, 1 x 10^6 should be entered as 1e6, 4.5 x 10^-7 should be entered as 4.5e-7.

Mass of one staple is 0.0324 g, scientific notation is _____ g.

A piece of Ca metal is placed in a 1.00-L container with pure N2. The N2 is at a pressure of 1.12 atm and a temperature of 26°C. One hour later, the pressure has dropped to 0.924 atm and the temperature has dropped to 24°C. Calculate the number of moles of N2 that reacted with the Ca. *

The catalytic converter that is standard equipment on American automobiles converts carbon monoxide (CO) to carbon dioxide (CO2) by the reaction. What mass of O2, in grams, is needed to react completely with 25.0 g of CO? *

The compound 1-propanethiol, which is the eye irritant released when fresh onions are chopped up, has the chemical formula C3HyS and a formula mass of 76.18 amu. What number does y stand for in the chemical formula of the compound? *

3 points

Demonstrate, via mechanism, that aldolic condensation products are indicated

below.

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2. Do the reaction mechanism below:

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Identify the reagents needed for the reactions below:

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The estimated average concentration of NO2 in air is 0.016 ppm. (a) Calculate the partial pressure of the NO2 in a sample of this air when the atmospheric pressure is 755 torr (99.1 kPa). (b) How many molecules of NO2 are present under these conditions at 20 °C in a room that measures 15 x 14 x 8 ft?

A concentration of 8.00 x 102 ppm by volume of CO is considered lethal to humans. Calculate the minimum mass of CO in grams that would become a lethal concentration in a closed room 17.6 m long, 8.80 m wide, and 2.64 m high. The temperature and pressure are 20.0°C and 756 mmHg, respectively.