Which is the correct formula for phosphorus pentachloride?
2 answers:
Answer: PCl5
Explanation:
Phosphorus pentachloride is also known as phosphorus V chloride. It is greenish-yellow crystalline solid with irritating odour. It sublimes at 160°C-162°C. It contains phosphorus in the +5 oxidation state. The structure of the compound is shown in the image attached. It is an inorganic compound.
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Answer:
Explanation:
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In this case, since the molarity of a solution is computed by dividing the moles of solute by the volume of solution in liters, we first need to compute the moles of solute knowing that the molar mass of calcium hydroxide is 74.1 g/mol as follows:
Next, since the 100-mL solution is also expressed in liters by 0.100 L, we directly compute the molarity as shown below:
Which is expressed in molar units that are mol/L.
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Answer:
Explanation:
a. NaCl+ AgNO3-----> NaNO3+ AgCl
b. Số mol của NaCl= 0,2*0,5= 0,1 (mol)
------> Số mol của kết tủa AgCl tạo thành= 0,1 mol (dựa vào phương trình hóa học)
-----> Khối lượng của kết tủa AgCl tạo thành= 0,1*143,5=14,35(g)
c. Số mol của AgNO3= số mol của NaCl= 0,1 (mol)
------> Nồng độ mol của dd AgNO3 đã tham gia phản ứng= =0,25(M)