Top new questions this week:
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I understand that a stoichiometric mixture contains a balanced mixture of air and fuel and both fuel and air are completed consumed. For example, the ideal stoichiometric mixture for propane is …
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There is an article about tripotassium phosphate that states the following: Consumers may have health concerns about why this cleaning agent can be used in food, but that is the technical grade, not …
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Upon assigning $\ce{^{13}C}$-NMR for 1,1′-bis(α-methylmethanol)ferrocene, we discovered the substituted FcC-CH peak (95.14 ppm) was more downshifted than the CH-OH peak (65.59 ppm) as was confirmed by …
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Suppose I take the model example: (1) $\ce{C + 1/2 O2 -> CO}$ (2) $\ce{CO + 1/2 O2 -> CO2}$ Adding both together: (3) $\ce{C + CO + 1/2 O2 + 1/2 O2 -> CO + CO2}$ (=> $\ce{C + 1/2 O2 + 1/2 …
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SMILES is not designed for metallic compounds. Is there a similar ASCII line entry notation for metallic compounds, including repeating structure in space, &c.?
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Background: For my studies I’m wanting and attempting to make a landfill greenhouse gas emissions (GHG) model that predicts the amount of greenhouse gas equivalent emissions ($GHG_\mathrm{eq}$ [tonnes/…
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In my textbook it was written that amylose is more water soluble than amylopectin. But as I searched for the reason I found a totally opposite information. https://pubs.acs.org/doi/pdf/10.1021/…
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Greatest hits from previous weeks:
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I’ve already searched online some information about this equation, but everywhere I read, there’s also sulfuric acid, which we did not use in the laboratory. We only used potassium permanganate and …
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This is a 10th-grade question. The melting point of a substance decreases with increase in presence of impurities in it. The melting point of ice decreases from 0 °C to -22 °C on mixing salt in it …
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What causes the melting and boiling points of noble gases to rise when the atomic number increases? What role do the valence electrons play in this?
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I am doing several questions involving judgment on the planarity of a compound. Which of the following is not a planar molecule? $\ce{H_2C=C=CH_2}$ $\ce{H_2C=C=C=CH_2}$ $\ce{H_2C=C=O}$ …
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What is the correct way to calculate the concentration $\ce{H3O+}$ in a solution with $\ce{pH}=6.99$? Attempt 1. pH<7, therefore there are only $\ce{H3O+}$ particles in the solution. $[\ce{H3O+…
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Why do transition metals element make colored compounds both in solid form and in solution? Is it related to their electrons?
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I have been taught that the MO diagram is different for molecules with 14 or less electrons than the one used for molecules with 15 or more electrons. For $\ce{N2}$ the orbitals in increasing energy …
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Can you answer these questions?
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In group theory, what do we do when we have infinite group order, like in D∞h or C∞v but we want to mathematically determine the SALCs (symmetry adapted linear combinations) using the projection …
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We use methylene iodide (“MI”, CH2I2) as a heavy liquid for sink-swim mineral separation. We use acetone to wash the MI off of the minerals and glassware after we’re done. MI is pretty …
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Typical protocols for lambda phage in vitro assembly call for you to dump all your viral components and buffer solutions into water. Water is a great solvent, drives extraction of energy from atp, and …
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