Chemistry

40POINTS AND BRAINLIEST Discuss the orders in which electrons are filled in the s and d subshells of the first three elements in group11
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10. What is the change in the boiling point of water at 1000 C per Pa change under atmospheric pressure conditions? The molar enthalpy of vaporization is 40.69 kJ mol-1, the molar volume of liquid water is 0.019 x 10-3 m3 mol-1, and the molar volume of steam is 30.199 x 10-3m3 mol-1, all at 1000 C and 1.01325 bar. (Hint: change in temperature per change in pressure)
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Formula for all possible isomers of hexane
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The unknown element (Johnsonium, Jo) contains three naturally occurring isotopes. The relative abundances and atomic mass are:Moorium-36: abundance = 1.32%, mass = 35.978amuMoorium-38: abundance = 3.25%, mass = 37.963amuMoorium-40: abundance = 95.43%, mass = 39.962amuWhat is the average atomic mass of "Moorium?"
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Calculate the entropy change when 4.31 g of H2 reacts with O2 according to the reaction2 H2(g) + O2(g) 2 H2O(l)at 298 K and 1 atm pressure. The standard molar enthalpy of formation of H2O(l) at 298 K is 285.8 kJ/mol. The corresponding free energy of formation is 237.2 kJ/mol.Answer in units of J/K.
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Helium gas (He) is an element and not a compound. Why is this true?
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Which changes involve forming or breaking chemical bonds?A.burning and digestingB.boiling and meltingC.burning and meltingD.rusting and cutting
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What step will be most effective for a manufacturer that wants to reduce the human costs of extracting the minerals it uses in its smartphones?(1 point)committing to only mining minerals in the United Statesdecreasing the prices of its productsswitching to using gold instead of tungsten in its productsverifying that child labor was not used in mining these mineralsPlease Help ASAP
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5. What is a hypothesis and how is it used?
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How has cooperation played a role in life's major evolutionary transitions?
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Please help Ill give brainiest!
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I really need help on this..
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Which contribution is a modification to Thomson's plum pudding model? Atoms are indivisible. Electrons are scattered in an atom. A positively charged nucleus sits at the center of an atom. Atoms of the same element have the same properties.
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Which one of the following is the symbol used in a chemical equation for agas?A. (g)B. (aq)C. (gas)D. (a)
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An unknown metal has a density of 10.51 g/ml and a mass of 287.8 g. What is theunknown metal's volume?
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How much heat, in kilojoules, must be added to a 580 g aluminum pan to raise its temperature from 25C to 150C? ---The specific heat capacity for aluminum is 0.897 J/gC. ---Round the answer to two significant figures.
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Which option is a mixture? a.carbon dioxide b. air c. oxygen d. carbon
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The most important ELEMENT found in all living things isA. OxygenB. hydrogenC. NitrogenD. Carbon
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Which action would cause the chair to move to the left?A. Applying 100 N of force to the chair from the leftB. Applying 100 N of force to the chair from the rightC. Applying 200 N of force to the chair from the rightD. Applying 200 N of force to the chair from the leftSUBMITPREVIOUS
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Which is the larger atom kr Or As
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2. Which atom is larger, Na or Al? Explain why.
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If an unknown sample contains 39.04% sulfuric acid by mass, then a 0.9368 g of that sample would require _____ mL of 0.2389 M NaOH for neutralization. A) 31.22B) 39.98C) 7.80D) 79.96E) 15.61Please give an answer and an explanation, thanks!
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.) If a solution had a pH level of 13.2, it would be considered a:O A. strong baseO B. weak baseO C. strong acidO D. weak acid
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Find the mass of an object that has a density of 1.5g/cm^3 and has a volume of 8cm^3 power
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