A mass of 2000 kg is raised through a height of 20 metres in 20 seconds. What is work done and power developed.​

Which of the following contributes to the structural rigidity of cellulose? adjacent glucose polymers are stabilized by hydrogen bonding. glucose residues are joined by (α1→4) linkages. cellulose is a highly branched molecule. the conformation of the glucose polymer is a coiled structure.

The number of moles of a given mass of a substance can be found without knowing its molecular formula or molar mass. true false

Suppose that a certain fortunate person has a net worth of $71.0 billion ($7.10×1010). if her stock has a good year and gains $3.20 billion (3.20×109) in value, what is her new net worth?