Tina is waiting at the bus stop. She sees and hears an ambulance as it approaches and passes by her. Which two changes in the loudness of the siren does Tina hear? The sound becomes less loud as the ambulance approaches her. The sound becomes louder as the ambulance approaches her. The loudness of the sound remains the same as long as she can see the ambulance. The sound stops when it reaches her. The sound becomes less loud as the ambulance moves away from her.
Answers: 3
Chemistry, 22.06.2019 11:50, hamidaakter936848
Calculate the molarity of each of the following solutions. part a) 0.12 mol of lino3 in 5.5 l of solution part b) 60.7 g c2h6o in 2.48 l of solution part c) 14.2 mg ki in 100 ml of solution
Answers: 2
Chemistry, 22.06.2019 12:00, zamariahyou
A5.000 g sample of niso4 h2o decomposed to give 2.755 g of anhydrous niso4. what is the formula of the hydrate? what is the full chemical name for the hydrate? what is the molar mass of the hydrate? niso4•_h2o what is the mass % of water in the hydrate?
Answers: 1
Tina is waiting at the bus stop. She sees and hears an ambulance as it approaches and passes by her....
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