Chemistry

Mosquitoes lays eggs that must hatch in water. The young, called larvae live their first few days in waterWhich sentence best describes where you will most likely find mosquitoes and their eggs during the dry season in the Florida Everglades?A.They will be spread out because water is everywhere.B.They will be mainly in one area because water is everywhere C. They will be in fewer areas because water is scarceD. They will be everywhere because water is scarce.
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What is a noble gas electron configuration of bismuth?
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If the acetylene tank contains 37.0 mil of C2H2 and the oxygen tank contains 81.0 mol of O2, what is the limiting reactant for this reaction 2C2H2(l)+502(g) 4CO2(g)+2H2O(g)
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Identity the anode and cathode
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Which of the following is the best indication that a chemical change has taken place?a. The matter changes color.b. A mixture separates into layers.c. The change is reversible.d. The shape of the substance changes.
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What does a dissolved salt look like?A. The salt crystals are surrounded by water molecules.B. The salt crystals separate into salt molecules in the water.C. The salt separates into ions that settle to the bottomD. The ions in the salt are surrounded by water molecules.
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How many moles of potassium nitrate are required to make 550 mL of a 2.1M solution?
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Explain why matter takes space
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Which question can be asked to determine if a wave is electromagnetic or mechanical
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AgCl is..A)an element B)a compound C.)a mixture
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Describe the interactions with the Sun, Earth and Moon system that result in Lunar Cycle / Phases.
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An example of a double replacement chemical reaction takes place in batteries. In an alkaline battery, Manganese oxide reacts with water to form a different manganese oxide and hydroxide. Which is the correct balanced equation for this?
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In the following reaction 6.13g of water (H,O) is produced the theoreticalyield of water (H,O) is 8.17g, what is the percent yield of water?*C3H8+ 5 O2 3 CO2 + 4 H2O85.0%72.0%75.0%0 67.0%
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How many milliliters of 0.200 M NH4OH are needed to react with 12.0 mL of 0.550 M FeCl3?FeCl3 + 3NH4OH Fe(OH)3 + 3NH4Cl
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A sample of water is heated from 10.0 degrees Celcius to 15.0 degrees Celcius by the addition of 125 Joules of heat. What is the mass of the water?
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A sample of carbon dioxide occupies a volume of 1.50L at 165KP pressure. What pressure would the gas exert if the volume was increased to2.5L?a.0.023 kPab. 275 kPac. 99 Ld. 99 kPa
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Gaseous butane will react with gaseous oxygen to produce gaseous carbon dioxide and gaseous water . Suppose 42. g of butane is mixed with 150. g of oxygen. Calculate the maximum mass of carbon dioxide that could be produced by the chemical reaction. Round your answer to significant digits.
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Which of the following human activities can increase the risks of flooding?
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38 mL of a gas was collected at 581 mm Hg and 25 degrees Celsius. What would the volume be at standard pressure (560 mm Hg) if the temperature remained constant?
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Suppose you digested 0.25 g of a copper ore samplein 15 mL of solution. One mL of this solution is transferred to a 10 mL volumetric flask, which is filled to the calibration level. The resulting concentrationwas 0.0087M Cu2+. What is the concentration of copper in the ore sample in units of percentage?
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What are the variables in Gay-Lussacs law
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EMERGENCY: I WILL FAIL: PLS HELP WILL MARK BRAINLIEST JUST PLS HELP
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During light-dependent reactions, carbon dioxide is converted to glucose.Group of answer choicesTrueFalse
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How do I solve this? Please help. How much heat is required to raise the temperature of 179g of acetic acid, CH3COOH, from 250C to 82.70C?
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