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Phytonadione, or more known as vitamin K1 , serves important roles in blood clotting mechanisms, bone health, and even bone health. When 0.368 g is dissolved in 12.0 g of camphor, the freezing point is lowered by 2.45 °C.
Calculate the boiling point elevation of an aqueous solution where enough urea (CH₄N₂O) is added to make a 0.45 molal solution. Use the boiling point elevation constant of water.
at 0°C, the density of mercury is 13.595 x 10³ kg/m³. What is the height of the mercury column in a barometer if the pressure P is Exactly 1 atm = 101.325 kPa?
Determine the weight of the sample, if it is used 24.9ml of 0.1 Normal sodium hydroxide of titrant (33.29% of busulfan (C7H6O2)
Explain how the earth's atmosphere was described as violet during the first billion years
1. Ten grams of plastic beads with a density of 1.2 g/cm3 are added to 500 ml of an organic solvent with a density of 0.80 g/cm3. What is the concentration of plastic beads in mg/L?
A single atom of an unknown element weighs 9 x 10 -23g. What is the atomic weight of
the element?
Europium metal crystallizes in a body–centered lattice with the unit cell measuring 4.58
A° along each edge. Determine the volume of a unit cell.
Ni crystallize s in a face - centered cubic structure. The radius of nickel atom is 1.25 A°.
What is the length of the unit cell edge in angstrom?
How to make sulphur ointment
