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Author Archives: Anonymous

Extremophilic bacteria are able to survive in hostile enviro…

Extremophilic bacteria are able to survive in hostile environments, including scalding hot water found in springs and vents that reach temperatures over 100°C. Researchers studying these bacteria measured the function of a protein from an extremophile bacterium at 100°C, and they also measured the function of a similar protein from a human cell at 100°C. Which results do you think the researchers obtained?

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Lipids are __________________meaning______________________

Lipids are __________________meaning______________________

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According to Le Chatelier’s Principle, what happens to a rea…

According to Le Chatelier’s Principle, what happens to a reaction if products are removed?

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Examine the pH scale below. How does grapefruit juice compar…

Examine the pH scale below. How does grapefruit juice compare to lemon juice?

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Glucose is ________.

Glucose is ________.

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How can radiation be controlled and safely used in medicine?

How can radiation be controlled and safely used in medicine?

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Why do we need to construct a calibration curve by plotting…

Why do we need to construct a calibration curve by plotting absorbance verses concentration for known standard solutions for this experiment?

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Which of the following would cause the greatest freezing poi…

Which of the following would cause the greatest freezing point depression when dissolved in a liter of water 1.0 M NaCl, 1.0 M KBr, 2.0 M C6H12O6, 1.0 M Ca3(PO4)2?

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How many grams of sucrose needs to be added to 1 kg of ethan…

How many grams of sucrose needs to be added to 1 kg of ethanol to achieve a freezing point depression of 1.99 °C? Given the molal freezing point depression constant for ethanol is 1.99 °C/m, the molar mass of sucrose is 342.3 g/mol and ΔTf = -iKfm.

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What is the pKa of a weak acid whose Ka is 2.4 x 10-4?

What is the pKa of a weak acid whose Ka is 2.4 x 10-4?

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