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exactly 15.6 g of cab4 compound was dissolved in 1500 cm³ of water. calculate the total number of b atoms in 500 ml of the solution.
Show that the centre of all sections of the sphere x² + y ² +z² = r² by the planes through a point (a,b,c) lie on the sphere x(x-a)+y(y-b)+z(z-c)=0
Find the centres of the spheres. which touch at the the plane 4x+3y=47 at the point (8,5,4) and which touch the Sphere x² + y ² +z² = 1
How do you infer that cathode rays are ubiquitous for all matters?
A model of a helicopter rotor has four blades, each 3.40 m long from the central shaft to the blade tip. The model is rotated in a wind tunnel at 550 rev/min. What is the radial acceleration (in m/s2) of the blade tip?
The spread operator is used to:
A. replace an array with individual values
B. assign single values of an array to an variable
C. divide a number by itself
D. accept multiple values sent to a function into a single array
Two identical light bulb, each with resistance R = 2 are connected to a source with E = 8
V and negligible internal resistance. Find the current through each bulb. The potential
difference across each bulb and the power delivered to each bulb and to the entire network
if the bulbs are connected parallel
draw the resonance structure of cyanate ion. out of them which one is less important as a resonance structure and why?
Caffeine, a stimulant found in coffee and some soft drinks, consists of 49.5% C, 5.15% H, and 28.9% N by mass; the rest is oxygen. Given the molar mass of caffeine is 195 g/mol, determine its molecular formula.
