Chemistry, 14.11.2019 05:31, impura12713
Instant cold packs, often used to ice athletic injuries on the field, contain ammonium nitrate and water separated by a thin plastic divider. when the divider is broken, the ammonium nitrate dissolves according to the following endothermic reaction: nh4no3(s)→nh4+(aq)+no3−(aq) in order to measure the enthalpy change for this reaction, 1.25 g of nh4no3 is dissolved in enough water to make 25.0 ml of solution. the initial temperature is 25.8 ∘c and the final temperature (after the solid dissolves) is 21.9 ∘c. part a calculate the change in enthalpy for the reaction in kilojoules per mole. (use 1.0g/ml as the density of the solution and 4.18j/g⋅∘c as the specific heat capacity.)
Answers: 3
Chemistry, 22.06.2019 11:20, ashiteru123
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.
Answers: 2
Chemistry, 22.06.2019 13:10, dookiefadep5n1tt
What type of interaction occurs between the r groups of valine and isoleucine in a tertiary structure? view available hint(s) what type of interaction occurs between the r groups of valine and isoleucine in a tertiary structure? salt bridge disulfide bridge hydrogen bond hydrophobic interaction
Answers: 1
Chemistry, 23.06.2019 00:00, vanessacox45
Total the mass on the syringe. record it in the correct row of the data table. kg done click and drag weights to change the pressure. click the syringe to zoom in and see the volume. intro
Answers: 3
Instant cold packs, often used to ice athletic injuries on the field, contain ammonium nitrate and w...
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