In your secret lab, you have 20 g of an unknown radioactive substance that
you know is in the uranium decay family. After nine minutes, there are only 2.5
grams left. What is the most likely radioisotope?

Which of these properties, used alone, would be least useful in identifying most minerals? a. color b. luster c. streak d. density

Why do you suppose the structural polysaccharide cellulose does not contain branches? why do you suppose the structural polysaccharide cellulose does not contain branches? branches in the molecule would generate side chains that would almost certainly make it difficult to pack the cellulose molecules into globules, thereby decreasing the flexibility and strength of the globules. branches in the molecule would generate side chains that would almost certainly make it difficult to pack the cellulose molecules into microfibrils, thereby increasing the rigidity and strength of the microfibrils. branches in the molecule would generate side chains that would almost certainly make it difficult to pack the cellulose molecules into globules, thereby increasing the flexibility and strength of the globules. branches in the molecule would generate side chains that would almost certainly make it difficult to pack the cellulose molecules into microfibrils, thereby decreasing the rigidity and strength of the microfibrils.

Electrons are extremely important to what area of technology? a) anti-aging research b) household product development c) electronics d) drug discovery