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You are given an unknown (solid or solution) and told that it can be one of the other of the compounds in the pairs listed below. Describe a simple chemical test (Not a flame test) using only reagents from our chemistry kits that would enable you to distinguish between the two possiblities. Describe what you would expect for each and write balanced, net iontic equations for any reaction that occur. Note that this question reviews all of the Qualitative Analysis experiments we have done.
A. AgCl (s) and BaSO4(s)
B. Fe^2+(aq) and Sr^2+(aq)
C. Hg2^2+(aq) and Mn^2+(aq)
D. CoS(s) and BaCO3(s)
What is the final temperature in a squeezed cold pack that contains 50.0 g of NH4NO3 dissolved in 135 mL of water?
In the Balmer-Rydberg equation, what value of is used to determine the wavelengths of the Balmer series?
The pressure on 200 ml of oxygen gas changes from 380 mm hg to 760 mm hg. The temperature does not change. What is the new volume of the oxygen gas?
A gas has a volume of 95 ml at a pressure of 930 torr. what volume will the gas occupy if the pressure is increased to 970 torr?
How many grams of aluminum must be used to produce 5.00 grams of hydrogen gas?
When solutions of the compound copper (ii) chloride and zinc nitrate are mixed, does the reaction result to form a precipitate, water, gas, or is there no reaction at all.
The flask was then shaken until the solution was uniform. A 25.0-mL sample of this glucose solution was diluted to 0.500 L. How many grams of glucose are in 100. mL of the final solution?
The volume of 350. mL of gas at 25°C is decreased to 135 mL at constant pressure. What is the final temperature of the gas?
A precipitate of calcium phosphate is in contact with 653.9 mL of water. How many grams of calcium ion are present in the solution
Acetylene gas (C2H2) is produced as a result of the following reavtion. CaC2(s) + 2H2O(l) yield C2H2(g) +Ca(OH)2(aq)
A helium balloon at a high altitude has 2.1 × 104 L of helium at 0.40 atm and -13°C. If the balloon descends to an altitude in which the atmospheric pressure is 1.00 atm and the temperature is 20°C.
Calculate the amount of heat required to raise the temperature of 1500g of water from 25C to 63C
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