Chemistry

If there are 3 moles of Pb, how many particles of Pb3N2 are there in the balanced equation? *
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The particles of a gas effuse 2. 76 times faster than particles of CCl4 at the same temperature. What is the unknown gas?
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Which of the following is an example of a plant or animal depending on a nonliving thing in its habitat? A. Grass depends on lions eating zebras so the zebras don't eat all the grass. B. Zebras depend on soil to grow grass, which the zebras eat. C. Lions depend on zebras as a source of food. D. Lions depend on grass to feed zebras, which the lions eat for food.
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If 7.34 mol of o2 react completely calculate the grams of co2 produced
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2. find the mass in grams of 3.12 moles ca(no3)2.
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What additional product completes the model?A. Carbon-8B. Helium-4C. Helium-8D. Carbon-4
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7. Calculate: Turn off Show most probable velocity and Show mean velocity. Select Hydrogen and set the Temperature to 100 K. You can calculate the most probable velocity (vp), mean velocity ( ), and root mean square velocity (vrms) using the following formulas: In each formula, R stands for the universal gas constant, or 8. 3144 J / K mol, T stands for Kelvin temperature, and M stands for the molar mass, in kg / mol. Hydrogen gas (H2) has a molar mass of 0. 002016 kg / mol. A. Calculate the most probable velocity (vp): ____________________ B. Check by turning on Show most probable velocity. Were you correct
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What will happen when pressure on a reactant mixture at equilibrium and with fewer moles on the reactant side is increased
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If 44. 0 grams of sodium reacts with 10. 0 grams of chlorine gas, how many grams of sodium chloride could potentially be formed?i need the answer asap
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Calculate the molarity of the solutions described below. Round all answers to 2 decimal places.Hint: Use molar mass and dimensional analysis to convert grams into moles.A) 100.0 g of sodium chloride is dissolved in 3.0 L of solution.Answer: MB) 72.5 g of sugar (C12H22O11) s dissolved in 1.5 L of solution.Answer: MC) 125 g of aluminum sulfate is dissolved in 0.150 L of solution.Answer: MD) 1.75 g of caffeine (C8H10N4O2) is dissolved in 0.200 L of solution. Answer: MWILL MARK BRAINLIEST!!!!!!!!!!!!!!!!!!!
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What is the limiting reagent in the reaction of 0.150 g of salicylic acid with 0.350 mL of acetic anhydride (d=1.082 g/mL)? Show your work.
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10. karl is at the gym exercising. after a while on the treadmill, he gets a cramp in his legs. karl blameslactic acid building up in his muscles. what is the chemical equation for this process?a. c.h20 -2c,h,o,b. 2c,h,o, -c,h,206c. ch2o2ch,oh + 2002
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Calculate the cell potential for the galvanic cell in which the given reaction occurs at 25 C, given that [Ti2+]=0.00140 M and [Au3+]=0.887 M . 3Ti(s)+2Au3+(aq)3Ti2+(aq)+2Au(s)
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Difference between practical work inside a laboratory and outside a laboratory?
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We wish to determine the mass of Mg required to react completely with 250mL of 1.0 M HCI. HCI reacts with Mg according to the equation below.2HCl(aq) + Mg(s) MgCl(aq) + H(g)How many moles of HCI are present in 250. mL of 1.0 M HCl?
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Q. N. 12. State Avogadros hypothesis. A certain element X forms two different compounds with chlorine containing 50. 68% and 74. 75 % chlorine respectively. Show how these data illustrate the law of multiple proportions.
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Is it possible to make an aqueous solution with strontium hydroxide, Sr(OH)2 (aq), that gives a pOH of 10.54? If so calculate it. If not, explain why not.
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When 21.44 moles of si react with 17.62 moles of n2 how many moles of si3n4 are formed
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A certain amount of gas is contained in a closedmercury manometer as shown here. Assuming noother parameters change, would h increase,decrease, or remain the same if (a) the amount ofthe gas were increased; (b) the molar mass of thegas were doubled; (c) the temperature of the gaswas increased; (d) the atmospheric pressure inthe room was increased; (e) the mercury in thetube were replaced with a less dense fluid;(f) some gas was added to the vacuum at the top ofthe right-side tube; (g) a hole was drilled in the topof the right-side tube?
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Al (s) + HCl (aq) H2 (g) + AlCl3 (aq) This is an example of:A. Double replacementB. Single replacementC. SynthesisD. Decomposition
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4. A sample of 25L of NH3 gas at 10 C is heated at constant pressure until it fills a volumeof 50L. What is the new temperature in C?5. A 600ml balloon is filled with helium at 700mm Hg barometric pressure. The balloon isreleased and climbs to an altitude where the barometric pressure is 400mm Hg. Whatwill the volume of the balloon be if, during the ascent, the temperature drops from 24 to5C?6. The pressure inside of a sealed container is 645. 0 torr at a temperature of 25 C. Atwhat temperature will the container have a pressure of 2. 21 atm?7. A balloon has a volume of 650. ML when it contains 0. 250 mol of a gas. If 0. 123 mol ofthe gas is released from the balloon, what is the new volume?8. In an autoclave, a constant amount of steam is generated at a constant volume. Under1. 00 atm pressure the steam temperature is 100C. What pressure setting should beused to obtain a 165C steam temperature for the sterilization of surgical instruments?
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In an oxoacid such as h2so4, ionizable hydrogen atoms are those bonded to:.
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How can you prepare 250mL of an aqueous solution using 8. 00g of solidNaOH?
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5. use the chemical equation and the table to answer the question.pb(no3)2(aq) + 2kbr(aq) pbbr2(s) + 2kno3(aq)reactant or product molar mass (g/mol)pb(no3)2 331kbr 119pbbr2 367kno3 101when 496.5 grams of pb(no3)2 reacts completely with kbr, how much will the total mass of the products be?a 496.5 gb 550.5 gc 702.0 gd 853.5 g
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