Chemistry, 06.10.2019 11:30 SAMANTHA1982
Cold packs are used to treat minor injuries. some cold packs contain nh4no3(s) and a small packet of water at room temperature before activation. to activate this type of cold pack, the small packet must be broken to mix the water and nh4no3(s). the temperature of this mixture decreases to approximately 2°c and remains at this temperature for 10 to 15 minutes.
state the direction of heat flow that occurs when the activated cold pack is applied to the body.
identify both types of bonds in the nh4no3(s).
Answers: 1
Another question on Chemistry
Chemistry, 22.06.2019 16:00
Click the button that shows the correct relationship of the electron affinities of the elements sodium and phosphorus. sodium’s electron affinity value is more negative than the electron affinity value of phosphorus. phosphorus’ electron affinity value is more negative than the electron affinity value of sodium. this information cannot be determined using the periodic table. answer is b on e2020.
Answers: 3
Chemistry, 22.06.2019 16:30
Correct relationship between molecular formula and empirical formula
Answers: 1
Chemistry, 22.06.2019 23:40
The kw for water at 0 °c is 0.12× 10–14 m2. calculate the ph of a neutral aqueous solution at 0 °c.
Answers: 2
Chemistry, 23.06.2019 02:00
Which would freeze at a higher temperature: the great salt lake or lake tahoe? a. lake tahoe would freeze at a higher temperature. b. the great salt lake would freeze at a higher temperature. c. both lakes would freeze at the same temperature.
Answers: 2
You know the right answer?
Cold packs are used to treat minor injuries. some cold packs contain nh4no3(s) and a small packet of...
Questions
Mathematics, 16.04.2020 07:22
Mathematics, 16.04.2020 07:22
Mathematics, 16.04.2020 07:22
Mathematics, 16.04.2020 07:22
Biology, 16.04.2020 07:22
History, 16.04.2020 07:22
Geography, 16.04.2020 07:22
English, 16.04.2020 07:22
Biology, 16.04.2020 07:22
