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Which of these statements best explains how continuation of space exploration would benefit humans? (2 points) It would provide technology to improve life on Earth. It would prevent severe weather con
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In the following reaction, how many grams of NaBr will produce 244 grams of NaNO3? Pb(NO3)2(aq) + 2 NaBr(aq) PbBr2(s) + 2 NaNO3(aq) The molar mass of NaBr is 102.9 grams and that of NaNO3 is 85 grams.
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Select the correct location on the diagram. Ocean currents affect the climate of the landmasses they come near. Which of the following locations most likely experiences a warmer climate due to a near
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A solution is prepared by adding 500 ml of 0.3 m naclo to 500 ml of 0.4 m hclo. what is the ph of this solution?
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Acetic acid, ch3cooh, is a weak organic acid, pka 4.47. determine the position of the equilibrium for the reaction of acetic acid with nahco3, and draw the species that predominates at equilibrium.
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Identify the housing option that has the lowest maintenance cost a single-family home b condominium c mobile home or d apartment
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As you have seen in this lab, the density of water is near 1 g/cm3. Anything with a density lower than this will float in water, and anything with a higher density will sink. Imagine you are building
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Major groups of minerals include _____. oxides and carbonates ions and isotopes inorganics and halides silicates and magnetics
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Write the complete ionic equation and the Net ionic equation for: K2C2O4(aq)+Pb(OH)2(aq) -> 2KOH(aq)+PbC2O4(s)
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A substance is dissolved in water and produces hydronium ions. This occurs when hydrogen ions move from the substance to associate with water molecules. Which term best matches the behavior of this su
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an extra amount of magnesium is includes in the mass you are to use. explain the purpose of adding extra magnesium
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Ibuprofen has the following mass percent composition: C:75.69% H:8.80% O:15.51% What is the empirical formula of ibuprofen?
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A molecule is a(n) - A. element that physically combines with another element. B. particle composed of two or more atoms bonded together covalently. C. element that isn't bonded to another element.
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If a wire with a current, which is continually reversing directions, is placed between the poles of a magnet, what will happen to the force on the wire
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A student performs this experiment mistakenly used 6.0ml of 16m HNO3 to dissolve 0.18g of solid copper
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What are two advantages of the globe over the precipitation map of Florida for understanding characteristics of Florida? What are two advantages of the map over the globe ?
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Combining 0.346 mol of Fe2O3 with excess carbon produced 15.0 g of Fe. What is the actual yield of iron in moles?
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How many grams of silver bromide could dissolve in one liter of 0.350 molar sodium thiosulfate solution?
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You look at the label on a container of shortening and see the words "hydrogenated vegetable oil." this means that during processing, the number of carbon-carbon double bonds in the oil was decreased.
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What is the ground-state electron configuration of the chloride ion cl−? express your answer in condensed form, in order of increasing orbital energy. for example, [he]2s22p2 should be entered as [h
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The boiling point of an aqueous solution is 102.36 °c. what is the freezing point? constants can be found here.
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1. FeSO4∙(NH4)2SO4∙ 6H2O + H2C2O4∙ 2H2O ---> FeC2O4 + (NH4)2SO4 + H2SO4 + 8H2O 2. 6 FeC2O4 + 3H2O2 + 6K2C2O4∙ H2O ---> 4 K3[Fe(C2O4)3]∙ 3 H2O + 2 Fe(OH)3 + 6 H2O 3. 2 Fe(OH)3 + 3 H2C2O4∙
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Calculate the freezing point and boiling point of a solution containing 7.65 g of ethylene glycol (c2h6o2) in 95.7 ml of ethanol. ethanol has a density of 0.789 g/cm3.
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Use LeChatelier’s principle to explain why the concentration of NO at equilibrium increases when the reaction takes place at higher temperatures
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Rubidium ignites spontaneously when exposed to oxygen to form rubidium oxide, Rb2O. Rubidium exists as two isotopes: 8537Rb (84.91 u) and 8737Rb (86.91 u). If the average atomic mass of rubidium is 85
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The activation energy for the reaction NO2(g)+CO(g)⟶NO(g)+CO2(g) is Ea = 375 kJ/mol and the change in enthalpy for the reaction is ΔH = -250 kJ/mol . What is the activation energy for the reverse r
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THE VALUE OF K FOR H2 CO2----H2O CO IS 1.80 AT 1000C IF 1.0MOLE OF EACH H2 AND CO2 ARE PLACED IN 1 LITRE FLASK THE FINAL EQUILIBRIUM CONCENTRATION OF CO AT 1000C WILL BE A)0.295M B)0.385M C)0.531M D)0
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In limonene, the major volatile compound in orange peel oil, how many carbon atoms are in the sp3 hybridization state
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THE VALUE OF K FOR H2 + CO2<---->H2O + CO IS 1.80 AT 1000C IF 1.0MOLE OF EACH H2 AND CO2 ARE PLACED IN 1 LITRE FLASK THE FINAL EQUILIBRIUM CONCENTRATION OF CO AT 1000C WILL BE A)0.239M B)0.385M C)0.53
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THE VALUE OF K FOR H2 + CO2<---->H2O + CO IS 1.80 AT 1000C IF 1.0MOLE OF EACH H2 AND CO2 ARE PLACED IN 1 LITRE FLASK THE FINAL EQUILIBRIUM CONCENTRATION OF CO AT 1000C WILL BE A)0.239M B)0.385M C)0.5
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Consider the reaction, 2 d(g) + 3 e(g) + f(g) => 2 g(g) + h(g) when e is decreasing at 0.68 mol/ls, how quickly is f decreasing? give your answer to 3 decimal places.
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A cube of iron (Cp = 0.450 J/g•°C) with a mass of 55.8 g is heated from 25.0°C to 49.0°C. How much heat is required for this process? Round your answer to three significant figures.
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State the evidence that makes it necessary to use more than one property to identify the substance given to the technician
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When electrons are in unstable State they will quickly returned to their lower energy level when this happens energy is released what conditions are the electrons in before his energy is released
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If the matter is uniform throughout and cannot be separated into other substances by physical processes, but can be decomposed into other substances by chemical processes, it is called an (an)--------
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PLEASE HELP ASAP BABES!! (19 points and brainliest for correct answers) (5 questions) The first step in the scientifc method, is to ask a question or A) state the problem. B) state the conclusion. C
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An object 5 millimeters high is located 15 millimeters in front of a plane mirror. How far from the mirror is the image located?
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Scale Mineral 10 diamond 9 corundum 8 topaz 7 quartz 6 feldspar 5 apatite 4 fluorite 3 calcite 2 gypsum 1 talc Talc scratches calcite. Quartz scratches corundum. Fluorite scratches feldspar. Topaz scr
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Scientific description about the pizza dough doubles its size when it is placed in a warm place . how does this happen
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How many grams of iron metal do you expect to be produced when 245 grams of an 80.5 percent by mass iron (II) nitrate solution react with excess aluminum metal? Show all of the work needed to solve th
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Yeast converts glucose (c6h12o6) into ethanol (d = 0.789 g/ml) in a process called fermentation. an unbalanced equation for the reaction can be written as follows:
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What is the maximum mass of ethyl alcohol you could boil with 1000 j of heat, starting from 21 ∘c?
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The 1h nmr spectrum below corresponds to an unknown compound with the molecular formula c6h10. there are no strong ir bands between 2100 and 2300 or 3250 and 3350 cm-1. deduce and draw the structure o
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Five different substances are given to you to be dissolved in water. which substances are most likely to undergo dissolution in water? check all that apply. view available hint(s) check all that apply
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A lethal dose of a specific drug taken orally is 1.5 mg/kg of body weight. calculate the lethal dose of the drug taken orally by a 165 lb person
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Which statement explains the fact that sediments on earth surface often differ in composition from the local bedrock
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2C6H5COOH + 15O2 → 14CO2 + 6H2O which of the following options gives the correct product:product ratio?
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Describe the sequence of adding ingredients to make the recipe for condensed tomato soup. To mix the ingredients, you have an industrial-sized vat with a capacity of 800 L. You also have the ability t
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How much Reagant excess remains unreached when 0.3500 grams Cu and 1.0 mL 15.6 HO3 or mixed together?
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A diels–alder reaction of 2,5-dimethylfuran and maleic anhydride gives a compound a that undergoes acid-catalyzed dehydration to give 3,6-dimethylphthalic anhydride.
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