subject
Chemistry, 11.03.2020 06:17 Dweath50

Design a portable, 1-time-use hot pack or cold pack for treating injuries. The pack must have 100 g of water separated from a solid chemical and be activated only when the user does something to the pack to mix the 2 components. Your job is to determine how many grams of the chemical are required to achieve the following temperatures: hot pack, 55° C (131° F); cold pack, 3° C (37° F).

What are the measurements I can use to obtain 55° C (131° F) for the hot pack, and 3° C (37° F) for the cold pack? What chemicals should I use for each?

ansver
Answers: 1

Another question on Chemistry

question
Chemistry, 22.06.2019 09:10
Select the correct answer from each drop-down menu.describe what happens to a carbon-11 atom when it undergoes positron emission.the decay of a carbon-11 atom _1_, and this causes it to emit _2_.options for 1: > changes a neutron into a proton> changes a proton into a neutron> is hit with a neutron> reconfigures its protons and neutronsoptions for 2: > a negatively charged electron-sized particle> a positively charged election-sized particle> two atoms and several neutrons> two neutrons and two protons
Answers: 3
question
Chemistry, 22.06.2019 11:50
Acompound has a molecular weight of 12.124 atomic mass units and the empirical formula c3h40. what is the molecular formula of the compound?
Answers: 3
question
Chemistry, 22.06.2019 15:30
How many moles are in 43.9 l of oxygen
Answers: 1
question
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
You know the right answer?
Design a portable, 1-time-use hot pack or cold pack for treating injuries. The pack must have 100 g...
Questions
question
Mathematics, 14.08.2019 08:40
question
Mathematics, 14.08.2019 08:40
question
Mathematics, 14.08.2019 09:10
question
Biology, 14.08.2019 09:10
Questions on the website: 13722362