you use an analytical balance to measure the mass of a weigh boat and record a mass of 1.5624 g. you then add some nahco3 to the weigh boat and give the weigh boat to your lab partner to measure. your lab partner mistakenly forgets to record all of the digits on the balance and records a mass of 1.92 g. what is the minimum number of grams of acetic acid that you would need to fully react with your nahco3? report your answer with appropriate sig figs and be sure to include units.

If you perfer to learn by reading to yourself instead of participating in a group discussing, you are most likely an

Snakes, dogs, and humans have a vertebral column. snakes and dogs have tails, and humans have vestigial tailbones. dogs and humans have limbs, but snakes do not. most reptiles lay eggs, but a few give birth to live young. what do these structures suggest about the evolutionary pattern between the three organisms? 1. snakes and dogs are more closely related than snakes and humans. 2. snakes and humans are more closely related than humans and dogs. 3. dogs and humans are more closely related than snakes and humans. 4. dogs, snakes, and humans share a common ancestor. 5. the early ancestor of snakes and dogs is the same, and the early ancestor of humans is different.

Consider a normal distribution of frog weights with u = 500 grams and o = 65 grams. a sample of size 2,000 is drawn from this population. approximately how many of the 2,000 cases would you expect to find between 435 and 565?