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Hi my name is Jordan Riolo and I am a student at Brewster high school doing a chemistry report: Are there certain gases that cannot be used to inflate an airbag due to it’s chemica
In the transition of Zn atoms to Zn ++ ions there is a decrease in the: (1) Number of valency electrons (2) Atomic weight (3) Atomic number (4) Equivalent weight A
Aromatic Nitro Compounds Aromatic nitro compounds are the derivatives of aromatic hydrocarbons where one or more hydrogen atom (s) of the benzene nucleus has been changed by ni
A monosaccharide A has a molecular weight of 150 Da. The two stereoisomers B and C that are both optically inactive form when A reacts with NaBH 4 . Illustrate the structures o
The de-Broglie wavelength of a particle with mass 1gm and velocity 100m/ sec is: (1) 6.63 x 10 -53 m (2) 6.63 x 10 -34 m (3
Q. Show Occurrence Extraction of group 16? Oxygen is the most abundant of all elements on earth. Dry air contains 20.946% oxygen by volume in the free form. Oxygen forms about
Q. What do you know about Radioactive Dating? Ans. Half-life measurements of radioactive elements in rocks and fossils can be used to determine the age of the specimen. On
Classify each reaction and give the name of all the chemical formula involved for each number. 1. Na2CO3(s) + SiO2(s) ? Na2SiO3(l) + CO2(g) 2. 2 Mg(NO3)2(s) ? 2 Mg(NO2)2(s) + O2
Modern Meaning of Organic Chemistry Organic chemistry is a chemistry of hydrocarbons and their derivatives where covalently bonded carbon is a necessary constituent. Berzelius
Q. Calculate Enthalpy Changes in system? Ans. It turns out that you can add reactions the same way you add algebraic equations. The enthalpy of the resulting reaction is the su
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