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Hard water contains Ca+2, Mg+2 and Fe+2, Explain which interfere with the action of soap and leave an insoluble coating on the insides of containers as well as pipes when heated. Water softeners replace these ions with Na+.
If 1500L of hard water contains 0.016M Ca+2 as well as 0.0020M Mg+2, explain how many moles of Na+2 are needed to replace these ions?
the label of an aerosol spray can contains a warning that the can should not be heated to over 130 degrees f because of
Consider following cell. SCE stands for the saturated calomel reference electrode, which has a fixed potential of 0.244 volt. Pt|VOSO4 (0.0184 M), V2(SO4)3 (0.212 M), HClO4 (0.0100 M) || SCE Calculate the cell potential.
The reaction of fluorine of 7.6 grams with excess chlorine(Cl) produced 3.3 grams of ClF3. Determine the percent yield of ClF 3 was obtained??
Antitumor agent, cisplatin, Pt(NH3)2Cl2 is prepared from the following reaction: K2PtCl4 + 2 NH3 ? Pt(NH3)2Cl2 + 2 KCl Assume that 10.0 g of K2PtCl4 reacts with 10.0 g of NH3.
Pure olive oil has an iodine value of about 85. A very old sample or originally pure olive oil is found to have an iodine value of 55. Explain
When a container is filled with 3.00 mol of H2 , 2.00 mol of O2 , and 1.00 mol of N2 , the pressure in the container is 465 kPa. determine the partial pressure of O2?
A chemical reaction takes place in a container of cross-sectional area 100 cm2. As a result of the reaction, a piston is pushed out through 21 cm against an external pressure of 534 torr.
Why is sodium bicarbonate used with acids and used in cooking
calculate the pH and molar concentrations of H2A, HA- and A2- for each of the solutions below:a) 0.116 M solution of H2A
In the process, a photon of wavelength 1.28Ã-10-6 m is emitted. What was the value of the principal quantum number for the higher energy level?
A liquid with a density of 40.0lb/ft3 flows through a long straight pipe of circular cross section at a arte of 200 ft3/hr. Determine if the flow is turbulant or streamline under the following conditions.
At the same temperature, rank the following substances in the order of increasing average kinetic energy: CO2, He, H2, CH4.
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