Numerade

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Which statement about a chiral compund A is incorrect? 1. a racemic mixture contains equal amounts of (+)-A and (-)-A 2. (+)-A and (-)- are enantiomers 3. (+)-A and (-)-A have the same polarities, melting points and densities 4. (+)-A and (-)-A undergo the same reactions with other chiral molecules SUBMIT

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Which of the following cannot act as a Brønsted base? $CO_3^{2-}$ $NH_2^-$ $NH_4^+$ $NH_3$ $HCO_3^-$

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In the following is a description of how early farmers selected a particular trait in a particular species. Which trait is referred to? Early farmers worked in a field of grasses to collect plants with mature seeds. These grass seeds measured 1 - 5 mm in length, thus getting them off the ground would have been impossible. Group of answer choices Increase in seed number Increase of seed size Loss of need for vernalization Loss of photo-sensitivity Loss of seed dispersal ability

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Driving around a circular track with a radius of 100 m, how fast do you have to go for $a = g$?

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Write the sum as a product (only use decimals inside of the trig functions): cos(13.4x) + cos(7.6x) =

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QUESTION 8 Which of the following is an example of moral skepticism? 1. Moral realism 2. Moral expressivism 3. Ethical objectivism 4. All of the above

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Dissolved proteins in the blood plasma are an important part of blood clotting true or false

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The selection of a new policy takes place during a period of time known as the _____. a. implementation lag b. activity lag c. decision-making lag d. recognition lag e. effectiveness lag

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Giant kelp forests grow in the shallow water along the coast of California. These kelp forests are home to many different marine species. Sea urchins eat the kelp, and sea otters eat the sea urchins. In exploring the coast of California on your vacation, you find a bay that has hardly any kelp. The kelp forest community in this bay has collapsed. Why might this have occurred? Group of answer choices A local environmental group planted more kelp in the bay. Humans trapped the resident sea otters and moved them from the bay. The sea otter population increased and the otters ate so many sea urchins that the sea urchin population dwindled.

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Bentham, a Utilitarian, had a famous example of distributing an additional fishing boat in a small coastal village. He argued that the fishing boat would be more valuable and benefit society more if Bentham, a Utilitarian, had a famous example of distributing an additional fishing boat in a small coastal village. He argued that the fishing boat would be more valuable and benefit society more if it were given to someone with many fishing boats. that boat was parked at a public dock free to be used by any fisherman whose boat was "down for repairs" that day. it were broken up and sold as firewood. it were given to someone with only 1 fishing boat - because others with more boats would not benefit as much as someone with 1 boat because of diminishing marginal utility.

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carlos e.