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❶Hydrogen occurs as a diatomic molecule.

Chemistry Homework Help

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At this point, there is no better solution than to find yourself an online homework helper. What a truly ideal help for homework should be like? First of all, it should be professional. Fermentation generates more ATP Option C is the correct answer to this question. Explanations as to why the other options are not the correct responses are found below. Option A is not the correct answer because How would I separate a mixture of salt and sand using hexane?

Actually, what you are asking for is simply not possible. Both salt sodium chloride and sand are powdery solids. As a result, they cannot be mechanically separated by simply picking the My teacher asked me to write a theory and discussion about an acid base titration. Acid-base titration is a chemical method to determine the concentration of either the acid or the base. It is based on the fact that acid and base neutralize each other completely.

Let me start by saying that energy is a flow, not a cycle. The reason it is a flow is because it has a starting place and an ending place. Fossil fuels all originally got their energy from the Why do group Vll elements have different physical states e. The elements that are part of group 7 of the periodic table are fluorine, chlorine, bromine and iodine. The elements fluorine, chlorine, bromine and iodine in this order display an increasing A solution has a hydronium-ion concentration of 1.

What is the pH of this To solve for the pH of a particular solution, we can use: In an interaction between sodium and chloride, which atom gains electrons? For the determining which atom loses an electron and which atom gains an electron, it is often very useful to consult the periodic table.

From there, we are able to examine the chemical properties How many formula units of CaCl2 are expected from 5. When calcium reacts with chlorine, calcium chloride is formed. One mole of calcium reacts with one mole of chlorine gas In the problem, the following information is provided: What is the molarity of the BaOH The balanced equation for the reaction is: At 1 atm, how much energy is required to heat First, we have to consider that there are three phases in this problem.

Water exists in three phases: We started by heating the solid water at degrees Celsius up to Here, r is a constant equal to 0. The balloon is filled with 6 moles of In the formation reaction for NH3, a chemist begins with Ammonia NH3 is an amine gas that is produced via an industrial chemical reaction called the Haber process. It is shown below.

AgBr, a chemical used in photography, can be made with this reaction: We can see from the above balanced chemical equation that for every two moles of AgNO3 we need one mole of CaBr2.

Given the following chemical reaction: We use the balanced chemical equation to compare the moles of each of Ozone is an air pollutant produced when nitrogen dioxide, NO2, from automobile exhaust reacts Charles law is the law that an ideal gas obeys when it is subjected to a transformation under constant pressure. Given the following aqueous reactants write a balanced chemical equation to describe the reaction Gas Law Simulations minor error: Stoichiometry p 18 Tricky Avogadro Problem from Board.

Answers to 0 Kelvin Questions by Clara and Jeyachandran. Rates and Mummies How Penicillin Works. More Rate Factors p Photosynthesis Diagram A chromatogram with a mixture of acetone-alcohol reveals that photosystems consist of more than 1 pigment from mainstreet. Example of champagne equilibrium.

Balancing p The missing 2 f, g. Redox and Sunken Treasure. Oxidizing and Reducing Agents in Crime Lab. More Ksp Practice Answers. Dinesh"s photo of Ideal Gas Law Lab. Calorimetry p Extra Calorimetry p Factors p57 Catalyst Inhibitor Stencil. K A and K B Stencil.

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Jun 20,  · An automobile tire is inflated to a pressure of psi. Express this pressure in atmospheres, kilopascals, inches Hg, millimeters Hg and torr. Hint: 1 atm = kPa = in Hg = mm Hg = psi = torrStatus: Resolved.

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Nov 20,  · A. How much heat energy, in kilojoules, is required to convert g of ice at − ∘C to water at ∘C? Express your answer to three significant figures and include the appropriate units. B. How long would it take for mol of water at ∘C to be converted completely into steam if heat were added at a constant rate of J/s?Status: Resolved.

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Sep 10,  · Tried this a million times & I m stuck. The heat of vaporization for benzaldehyde is kJ/mol, and its normal boiling point is K. Use this information to determine benzaldehyde’s vapor pressure (in torr) at °C. Report your answer to three significant digitsStatus: Open. Oct 11,  · These are the last few hw problems that i dont understand. please help! Please explain if you can! 1. Accordingly to the periodic law the properties of elements repeat at regular intervals when the elements are arranged in order of a. their increasing atomic mass. b. their increasing atomic size. c. their increasing number of neutrons in Status: Resolved.

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Sep 11,  · Chemistry homework help? Common brass is a copper and zinc alloy containing % zinc by mass and having a density of g/cm^3. A fitting composed of common brass has a total volume of cm^ Resolved. Nov 20,  · Best Answer: 1) B 2) C 3) A 4) where is the question? 5) C 6) E 7) A 1) The first ionization energy of the elements INCREASES as you go from left to right across a period of the periodic table, and INCREASES as you go from bottom to top of a group in the table 2) The halogens have the most negative electron affinities. 3) Status: Resolved.