Achemistry student must write down in her lab notebook the concentration of a solution of potassium chloride. the concentration of a solution equals the mass of what's dissolved divided by the total volume of the solution. here's how the student prepared the solution: the label on the graduated cylinder says: empty weight: she put some solid potassium chloride into the graduated cylinder and weighed it. with the potassium chloride added, the cylinder weighed . she added water to the graduated cylinder and dissolved the potassium chloride completely. then she read the total volume of the solution from the markings on the graduated cylinder. the total volume of the solution was . what concentration should the student write down in her lab notebook? be sure your answer has the correct number of significant digits.

This line graph compares the growth of plants that were kept in the sun for different amounts of time.a)  on day 7, the plants kept in the sun for 3 hours were how tall? b)  on day 7, the plants kept in the sun for 6 hours were how tall? c)    on day 10, the plants kept in the sun for 9 hours were how tall? d)  on day 11, the plant that was grown with 1 hour of sunlight was how tall? e)  based on the graph, the plant grows best in what amount of sunlight?

What’s a special glass that most beakers are made of

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.