Chemistry questions! 3. when two atoms of 2h (deuterium) are fused to form one atom of 4he (helium), the total energy evolved is 3.83 ? ? 10-12 joules. what is the total change in mass (in kilograms) for this reaction? 4. the mass of a proton is 1.00728 atomic mass units (amu) and the mass of a neutron is 60co nucleus whose nuclear mass is 1.00867 amu. what is the mass defect (in amu) of a 27 59.9338 amu? what is the mass defect in kilograms? what is the energy equivalent of this mass in kilojoules? 5. the equation shows one mole of ethanol fuel being burned in oxygen. convert the energy released into its equivalent mass. c2h5oh(l) + 3 o2(g) -> 2 co2(g) + 3 h2o (l) ? ? h = -1418 kj/mol

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.

The best solution for preventing harm to people and pets from severe hurricanes involves determining and warning residents about what

Which of the following is not one of the steps in the scientific method a. hypothesize b. summarize c. analyze d. familiarize