Chemistry

what mass of hi should be present in 0.300 l of solution to obtain a solution with each ph value?
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Why does C have 4 valence electrons?
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A student makes the following statement:Ozone depletion is causing global warming. When the ozone layer is destroyed, more UV light reaches Earths surface. An increase in UV light causes Earth to be warmer. Evaluate the students statement to decide whether you agree/disagree and support your answer
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How do water and land surfaces differ in their abilities to absorb and radiate heat energy?
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b. complete the following table. tell if the molecule is polar or nonpolar, draw the lewis structure for the molecule, give the shape of the molecule, and state what the most significant intermolecular force affecting the molecule would be. (16 points) sci2 cbr4
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Which phrase describes the movement of air in general?A. from high pressure to low pressureB. from north to southC. from south to northD. from low pressure to high pressure
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the equilibrium constant, , for the following reaction is 55.6 at 698 k. calculate the equilibrium concentrations of reactants and product when 0.230 moles of and 0.230 moles of are introduced into a 1.00 l vessel at 698 k.
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How many bonds can chlorine make?
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(a) The equation for the complete combustion of butane is given below. Insert themissing volumes.2CH(g) + 130(g) 8CO(g) + 10HO(g)volume of gas/cm
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which of the following statements best predicts the effect of increasing the concentration of substrate (ethyl alcohol), while keeping the concentration of the inhibitor (methyl alcohol) constant?
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photoluminescent green carbon nanodots from food-waste-derived sources: large-scale synthesis, properties, and biomedical applications
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Can energy be destroyed?
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It is thought that when molten copper is cooled and solidified it can take in some oxygen from the air. This may slightly decrease the conductivity of the copper. Suggest why the conductivity might be decreased.
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I got stuck on this question
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balance the following equation
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What happens to the molar volume when the pressure decreases?-Molar volume increases-Molar volume decreases-Molar volume stays the same
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Anything that takes up space is called _____
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Consider the reaction of a generic metal ion (Mn+) with a generic porphine molecule (por): M(H2O)mn+(aq)+por(aq)M(por)n+(aq)+mH2O(l) Based on the values of standard enthalpy, H, and entropy, S, shown here, H S -21.5 kJ 7.82 J/KJ/K what is the value of the formation constant, Kf , for the reaction at 25 C?
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The following concentrations are found in mixtures of ions in equilibrium with slightly soluble solids. From the concentrations given, calculate Ksp for each of the slightly soluble solids indicated:(a) TlCl: [Tl+] = 1.21 102 M, [Cl] = 1.2 102 M (b) Ce(IO3)4: [Ce4+] = 1.8 104 M, [IO3] = 2.6 1013 M (c) Gd2(SO4)3: [Gd3+] = 0.132 M, [SO42] = 0.198 M (d) Ag2SO4: [Ag+] = 2.40 102 M, [SO42] = 2.05 102 M (e) BaSO4: [Ba2+] = 0.500 M, [SO42] = 4.6 108 M
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Given the volumes of a solvent and solute and their density, what temperature do they freeze at? It would really help if someone helped explain how to do this, Im kind of stuck thanks
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Give the Lewis dot structure for CH3O
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order the following ion pairs by decreasing bond strength. (strongest to weakest: left to right.)
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What is 1 moles in grams?
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. Activity effects may be expected to be most important in a. extremely dilute solutions. b. solutions of low pH. c. very concentrated solutions.
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