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If the opposite signs attract each other in an atom and same signs pushes back each other. But in an atom if the electrons are attracted to proton(negative to positive) then why the protons in the center(nucleus) of an atom remain combined instead of having the particles positive signs?
Three solutions are mixed together to form a single solution. One contains 0.2 mol Pb(CH3COO)2, the second contains 0.1 mol Na2S,and the third contains 0.1 mol CaCl2.
Q1: Describe each of the following equations in terms of ( 1) number of particles and ( 2) number of moles: a. 2Al(s) +3Cl2(g)à 2AlCl3(s) b. 4HCl(g) + O2(g) à 2Cl2(g) + 2H2O(g)
Calculate the pressure inside the graduated cylinder it the height of the water is 5mm higher than the water in the trough. The atmospheric pressure is 760 mm Hg
The terms SCOT, WCOT, & PLOT are frequently used to describe types of GC columns. Specifically how do these columns differ from "Packed" columns in their structure and function
A room contains 48 kg of air. How many KWh of energy are necessary to heat the air in the house from 7oC to 28oC? The heat capacity of air is 1.03 J/goC.
what is the total number of joules of heat energy absorbed when the temperature if 200.0g of water is raised from 10 degrees celcius to 40 degrees celcius.
It takes 27.22 mL of NaOH to reach the endpoint. What is the equivalent weight of the acid?
Calculate w (in kJ) when 265 g iron (III) oxide (MM = 159.7 g/mol) reacts with excess carbon to produce carbon dioxide gas at 358 K
A 100 L reaction container is charged with 0.704 mol of NOBr, which decomposes at a certain temperature say between 100 and 150ºC according to the following reaction
A researcher found that 11.56 grams of lead sulfide, PbS, were formed when 10.0 grams of lead reacted with 1.56 grams of sulfur, when 10.0 grams of lead reacted with 3.00 grams of sulfur, and when 18.0 grams of lead reacted with 1.56 grams of sulf..
What is the osmotic pressure of a solution made from dissolving 85.0 g of glucose, rm C_6H_{12}O_6, in 300 mL of water at 45.0{^circ}C?
If 2.5 mol of ethylene oxide is decomposed at 93 degrees celcius what will be the final temperature of the products? The heat capacity of the products is 110.13J/mol C
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