Chemistry

Which of the following could be an empirical formula? a C6H12O6 b H2O2 c CH2O d C6H6
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Which of the following chemical reactions produces water via asynthesis reaction?a 2H2 + O2 + 2H2Ob NaOH + HCI - NaCl + H2OC CuO + H2 - Cu + H2Od H2CO3 CO2 + H2O
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Which of the following BEST describes what DNA looks like?
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I need help with energy
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PLS HELP TEST IS TIMED!!The temperature of a solution can change the solubility of a substance. The chart shows the solubility of the same solute at different temperatures in water. A 3-column table with 4 rows. The first column labeled solution has entries W, X, Y, Z. The second column labeled temperature degrees C has entries 40, 59, 55, 48. The third column labeled grams per 100 grams of water has entries 50, 200, 150, 80.Based on the chart, which solution was at the optimal temperature to allow for the greatest solubility?
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C7H6O3+ C4H6O3=C9H8O4+H20- Balance the above equation.
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I NEED HELP!!!!! IM TIMEDDDD! HELP PLZZZZ!!!!
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Show work please ?...........
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True or False: The reactants and the products of a chemical equation always have the same number of atoms.
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Which of the following is a true statement about bacteria, based on what Tim and Moby explained??A: Bacteria exist in only a few environments on Earth.B: Bacteria can grow to extremely large sizes.C: Mast bacteria are harmful to humansD: Bacteria can be both harmful and helpful to humans.Extra points for help
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I need helps plss!!!!
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What is the charge on an atom after it gains two electrons during the formation of a bond?One negative chargeOne positive chargeTwo negative chargesTwo positive charges
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If you know, answer this. If you dont know this, dont second guess
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Help! What is this question I do not understand
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How can changing the reaction conditions influence the yield of a chemical reaction?please explain in detail
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2. Hydrocarbons consist of carbon and hydrogen. 5.7 g of a hydrocarbon contains 4.8 g of carbon.If the relative molecular mass of the hydrocarbon is 114, determine its molecular formula.
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I feel sad when all the flowers
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Freezing and thawing water can cause a rock to break down into smaller pieces. Which part of the rock cycle is this an example of?meltingweatheringsubsidencedeposition
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Describe the process of two neutral atoms forming an ionic bond
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word equation for Na2O+H2O NaOH
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Please help! Is hot tea with lemon juice a heterogeneous, homogeneous, or pure substance? Will award brainliest!
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compare and contrast the benefits with the potential negative effects of utilizing hydraulic fracturing to produce oil.
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g Hydrogen iodide, HI, decomposes at moderate temperatures according to the equation The amount of I2 in the reaction mixture can be determined from the intensity of the violet color of I2; the more intense the color, the more I2 in the reaction vessel. When 3.80 mol HI was placed in a 5.00-L vessel at a certain temperature, the equilibrium mixture was found to contain 0.443 mol I2. What is the value of Kc for the decomposition of HI at this temperature
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