WiFi, which allows wireless access to the internet, uses which electromagnetic wave?
A. Infar...
Chemistry, 28.03.2020 01:56 ivetter5333
WiFi, which allows wireless access to the internet, uses which electromagnetic wave?
A. Infared light
B. Radio waves
C. Ultraviolet light
D. Microwaves
Answers: 3
Chemistry, 22.06.2019 12:30
Write the chemical formula for a compound that is made of an element from group 1 and an element from group 17
Answers: 1
Chemistry, 23.06.2019 00:30
You are attempting to recrystallize a crude product mixture. you add the appropriate amount of hot solvent and are allowing the solution to slowly cool to room temperature. however, at room temperature no crystals have appeared, which of the following methods should be used to induce crystallization? choose all correct answers. a) place the flask in an ice bath. b) swirl the contents of the flask. c) add a small seed crystal of the desired product. d) scratch the inside of the glassware using a stir rod. it can be multiple choices
Answers: 3
Chemistry, 23.06.2019 13:00
Consider the reaction: 2al(s) + fe2o3(s) → al2o3(s) + 2fe(s) the δhf for fe2o3(s) = -824.3 kj/mole. the δhf for al2o3(s) = -1675.7 kj/mole. finish the equation. δhrxn = [(1)( kj/mole) + (2)( kj/mole)] - [(1)( kj/mole) + (2) ( kj/mole)]
Answers: 1
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