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The density of benzene at 15 ∘C is
∘C is 0.8787 g/mL
g/mL. Calculate the mass of 0.1200 L
L of benzene at this temperature.
Explain why phosphorus can form five covalent bonds, whereas nitrogen can only form three covalent bonds.
A gas was collected over water at s.t.p what would be its pressure if the saturated vapour of water at s.t.p is 13mmHg (s.t.p )=(760mmHg)
two containers of the same volume contain respectively a sample of oxygen at 1.52*10^(5)Nm^(-2) and a sample of nitrogen at 1.01*10^(5)Nm^(-2), what will be the pressure if both gases are held in the same container at the same temperature
Analyze the molecular formula of fructose. What is the summation of the number of atoms present in fructose?
NOTE: WRITE YOUR ANSWER AS A FIGURE WITH NO UNITS/LETTERS ATTACHED TO IT.
Calculate pH of a mixture of 0.25M acetic acid and 0.1M sodium acetate, given that the pKa value of acetic is 4.76.
why are these enzymes Complex I, complex II (or succinate dehydrogenase), and 3-phosphoglycerol dehydrogenase not directly involved in the lipid metabolism
A lab assistant wants to prepare 0.2 mol dm of potassium chloride solution. What is the volume of distilled water needed to dissolve 2.98 g of potassium chloride?
[Molar mass of potassium chloride = 74.5 g mol¹¹]
X cm³ of 0.15 mol dm³ zinc nitrate solution Zn(NO3)2 is pipetted into a 500 cm³ volumetric flask to produce 500 cm³ of 0.018 mol dm³ zinc nitrate solution. Zn(NO3)2. Determine the value of X.
