Chemistry

A cylinder of Krypton has contains 17 L of Ar at 22. 8 atm and 112 degrees celsisus. How many moles are in the cylinder?
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I need help doing a bond line angle, and naming them. Along with their function groups.
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What is the volume of a 1.0 M solution that has 4.0 moles of solute?
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wade could tell it was the night before trash pickup. The garbage can stank! What was it about summer that made the trash smell so bad, but the odor wasn't as bad during the winter months? construct an explanation that details the role particle energy plays in smell.
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Elemental silicon is oxidized by o2 to give a compound which dissolves in molten na2co3. when this solution is treated with aqueous hydrochloric acid, a precipitate forms. what is the precipitate
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PLEASE HELP!! 416 g of Xenon-146 was placed in a container to decay, if there is now 13g of Xenon- 146 left, how long has the Xenon been decaying? (the half-life of ^ 146 Xe is 37 hours) Please enter your answer as with one decimal place and with no units.
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How much 3. 0 M H2SO4 is needed to neutralize 50. ML of 1. 2 M AL(OH)3
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Which salt solutions could be used to prepare a buffer solution?.
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Bailey got sick and heard that he should gargle salt water to help his throat. He adds 25g of salt(NaCl) to a cup with 250mL of water(H2O). What is the concentration of this salt water in mol/L? Sodium has atomic mass 22. 99g/mol and chlorine has atomic mass 35. 45g/mol
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6. How many moles are in 2. 65x10 22 atoms of carbon? 7. How many moles are in 1. 79x10 25 molecules of ammonia?
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What common name is given to group 0 elements of the periodic table
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What would be a good scientific reason to explain why plants that receive more light have more growth?Light is required for plants to absorb waterOnly water influences plant growthThe radiation emitted from the light increases the moisture in the soilPlants need light for the process of photosynthesis. Without photosynthesis, plants cannot make their own food.
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what is the pH of a solution prepared.by dissolving 4.0 g of HCL in water to make 475mL of a solution
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3. If 720. 0 g of steam at 400. 0 C absorbs 800. 0 kJ of heat energy, what will be its increase intemperature? (Cp of steam = 1. 7 J/g C)
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Benzene at 20C has a viscosity of 0. 000651 Pa. S. What shear stress is required to deform this fluid at a velocity gradient of 4900 s-1 ?
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The number of calories in 10 grams of sugar is an example of a(n) ___________________. intensive extensive unique chemical
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How many liters would a 20 liter sample of gas at STP occupy if thepressure was changed to 20 atmospheres and the temperature was changed to38C?
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1/2 of an oxygen atom can combine with 2/3 of a hydrogen atom true or false
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!!!!chem help 50 points only answer if you know how to calculate this!!!!daltons law of partial pressures and the ideal gas law.8. you add 5 grams of n2 and 20 grams of he2 into a sealed container that has a volume of 5l. the temperature of the container is 393.15k. a. use daltons laws of partial pressures to explain how the n2 and he2 gasses contribute to the total pressure of the container. (3pt)b. calculate the moles of n2 was put into the container. (0.5pt)c. calculate the moles of he2 was put into the container. (0.5pt)d. use the ideal gas law to calculate the partial pressure of n2 gas inside the container. (2pts)e. use the ideal gas law to calculate the partial pressure of he2 gas inside the container. (2pts)f. use daltons law of partial pressures to calculate the total pressure of gas inside the container. (1pt)please ask if any further information is needed in order to answer these (-:
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SEP Plan and Carry Out Investigations Suppose that you were a geologist trying to figure out how a long and narrow sea, such as the Red Sea, formed. What geologic features would you look for to determine whether the current shape of the sea is a result of seafloor spreading or ocean subduction? a
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How many magnesium ions are contained in 4.5 moles of magnesium phosphate?
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17. saccharin, an artificial sweetener that is 3000 times sweeter than sucrose, is composed of45.90% carbon, 2.73% hydrogen, 26.23% oxygen, 7.65% nitrogen, and 17.49% sulfur. is the molecular formula of saccharin (a) c14h10o6n2s2, (b) csh,ons, (c) c&h9o2ns, and following orition: com 12.0%(d) c;h5o3ns?
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Write the complete equation for neutralization reactions for LiOh + HNO2
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It's a beautiful sunny July day temperature is 22. 4C and you are playing basketball. You are using a vessel that has a volume of 3. 1 L. Later that night, the temperature drops to 8. 5C and you go out to play basketball again. What is the volume of the ball that evening in liters?
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