Chemistry

Grinding a seltzer tablet into powder increases the rate of reaction due to an increase of which factor? Temperature Surface area Reactants Concentration
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If a 1.45 M solution has 2.43 g HCl dissolved, what is the volume of solution? (Change g HCl into mol using molar mass)
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HELP PLEASE You may select a topic from the list below, or choosese a topic about our solar system
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What is the hydrogen ion concentration [H+] of a HCl solution if the pH is measured to be 2.0?
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PLEASE HELP :"( DUE NOW!!What is the equation for the equilibrium constant for this equation?CO+3H2CH4+H2O[H2O][H2]/[CH4][CO][CO][H2]3/[CH4][H2O][CH4][H2O]/[CO][H2]3[CH]4[H2O]/[H2]3
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What is the value for AG at 500 Kif AH = 27 kJ/mol and AS = 0.09 kJ/(mol-K)?
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How many atoms are there in 2 moles of helium?
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modern vacuum techniques make it possible to reach a pressure of 1.00 * 10 ^ -10 mm Hg in a laboratory system. what volume in milliliters would 1.00 * 10 ^ 6 molecules of gas occupy at this pressure and standard temp?
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A(n)wave carries energy through matter
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Heat required to raise 1 g of a substance 1C
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the combustion of 0.1240 kg of propane in the presence of excess oxygen produces 0.3110kg of carbon dioxide what is the limittinf reacrant?
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ASAP NEED HELP PLSSS A gas occupying a volume of 3.75L at a pressure of 0.980 arm is allowed to expand at constant temperature until its pressure reaches 0.641 atm. What is the final volume of the sample?
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Coal contains carbon and other elements. Carbon dioxide forms when coal burns in the presence of oxygen. Which of these is the best evidence that a chemical reaction occurs when coal burns? Select one: A new substance is produced. Coal is made up of more than one element The shape of the coal changes. Oxygen is present.
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In order to control pollution, you should reduce the need for _____________ goods and transportation.
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the distance from the top of one sound wave to the top of the next sound wave is called a (n)
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The oxidation number of bromine in bromine gas is _____. A. 0 B. +1 C. 1 D. 2
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Can somebody please help i have to turn my computer in like 30 minutes
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How many grams of ethylene glycol should be dissolved into1.50 kg of water in order to prepare a solution that will freeze at-17.0C?g ethylene glycol
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3Fe + 2O2 Fe3O4 In this reaction, 200 grams of Fe react with 64 grams of O2. How many grams of Fe3O4 will be produced? A 230 grams B 264 grams C 280 grams D 460 grams
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What is the formula for frequency?
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Why is a telephone considered an example of matter?
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HELP CHEM ASAP PLZZZ!!!! Brainlist
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I AM GIVING BRAINLIEST PLEASEEEEEEE HELPPPPPPP I NEEDDDDD HELPP PLZIf 0.020 mol of LiOH are dissolved to make 4.5L of solution, what is the molarity?PLEASE WRITE WITH STEPS
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The radioactivity due to carbon-14 measured in a piece of a wooden casket from an ancient burial site was found to produce 20 counts per minute from a given sample, whereas the same amount of carbon from a piece of living wood produced 160 counts per minute. The half-life of carbon-14, a beta emitter, is 5730 years. Thus we would estimate the age of the artifact to be about?
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