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Which of the following statements about low density polythene is FALSE ? (1) It is a poor conductor of electricity (2) Its synthesis requires dioxygen or a peroxide initiator as a catalyst (3) It is used in the manufacture of buckets, dust-bins etc (4) Its synthesis requires high pressure
Polonium crystallizes in a simple cubic lattice (the Po atoms are at the lattice points only). If the density of the metal is 9.31 g/cm3, what is the unit cell edge length in pm
Lithium has two stable isotopes with masses of 6.01512 u and7.01600 u. The average molar mass of Li is 6.941 u. Explain what is the percent abundance of each isotope
rutile has atoms of element a at the unit cell coordinates 0 0 0 and 12 12 12 and atoms of element b at 14 14 0 34 34 0
Although water and ammonia differ in molar mass by only one unit, the boiling point of water is over 100 °C higher than that of ammonia. What forces in liquid water that do not exist in liquid ammonia could account for this observation
a 25.0 ml sample of river water was titrated with 0.00100 m na2cr2o7 and required11.5 ml to reach the end point. what
Draw the molecular structure of three monomeric units of the addition polymer that results from polymerization of acetylene. Only show the structure that would be found inside the brackets of a condensed formula for this polymer
Problem- What would the potential of a standard Hydrogen (S.H.E) electrode be if it was under the following conditions
find the volume of oxygen.1.calcium carbonate forms limestone one of the most common rocks on earth. it also forms
How many seconds are required to produce 4.94 mg of chromium metal from an acidic solution of potassium dichromate, using a current of 0.234 A?
The Haber process is very important for agriculture because it converts N2 (g) from the atmosphere into bound nitrogen which can be taken up and used by plants. The reaction is N2 + H2->NH3
The J=3---J=2 pure rotational transtion for the CS molecule occur at 146.831 GHZ. Calculate the bond length(in pm) for the CS molecule, assuming that there is negligible centrifugal distortion.
Before investigating the scene, the technician must dilute the luminol solution to a concentration of 6.00×10^?2 M . The diluted solution is then placed in a spray bottle for application on the desired surfaces. How many moles of luminol are prese..
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