Which of the following has the highest melting temperature? H₂O CO₂ S8 MgF2 PA

Q: What are the hazard effects of acetic acid and does it have a signal

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Q: QUESTION 24 Calculate the heat of the reaction, in kJ, using the standard enthalpies of formation…

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Q: Bulk platinum cost about $1158 dollars per ounce (28.35 g = 1 ounce) how much is this per gram?

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Q: Molecular mass of hydrocarbon decreases with increasing number of Carbon atoms  True False

A: False

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A: Proper Name of Fe(NO3)3

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Q: What type of bond is joining this disaccharide? CH₂OH OH -20 ОН B(1 -> 4) (1 ->4) OB(1 B(1 -> 6) (1…

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Q: L. Write the balanced equation for the production of brown nitrogen dioxide (NO₂) gas from nitrogen…

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Q: True or False: (answer directly) 1. If a solution does not form any precipitate when BaCl2 and AgNO3…

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Q: ____ are added to protect condensate lines. a) amines b) phosphates c) sodium sulfate d) zeolites

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Q: Which is larger: AS at constant pressure or AS at constant volume? Why?

A: ΔS at constant volume is larger  than ΔS at constant pressure

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Q: An analytical chemist weighs out 0.138 g of an unknown monoprotic acid into a 250 mL volumetric…

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Q: 0.395 mol magnesium nitrate to total number of atoms

A: Magnesium Nitrate  Mg(NO3)2 No of moles = 0.395 No of atoms = ?

States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates). 

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.