Physics, 11.01.2020 01:31, jetblackcap
1. 412.9 g of dry ice sublimes at room temperature. a. what’s changing? sublimation b. what constant will you use? 25.2 kj c. what equation will you use? q=m(sublimation) d. is energy being absorbed or released by the dry ice? absorbed e. how much energy is being transferred? 2. steam – specifically 72.9 g of steam – condenses. a. what’s changing? b. what constant will you use? c. what equation will you use? d. is energy being absorbed or released by the steam? e. how much energy is being transferred? 3. a silver ring with a mass of 39.2 g is heated from 25.9 °c to 412.9 °c. a. what’s changing? b. what constant will you use? c. what equation will you use? d. is energy being absorbed or released by the silver? e. how much energy is being transferred? 4. an ice cube with a mass of 156.3 g melts (starting at its freezing point) and then warms up to 56.232 °c. a. what’s changing? b. what constant will you use? c. what equation will you use? d. is energy being absorbed or released by the ice cube? e. how much energy is being
Answers: 2
Physics, 22.06.2019 03:00, BeautyxQueen
Which of the following is not a part of the respiratory system? a. pharynx b. trachea c. pancreas d. larynx hurrim timed
Answers: 1
Physics, 22.06.2019 10:00, kenna0
This is important 1. what happens to the speed of molecules in water vapor when it condenses to form a liquid? (2 points) the molecules slow down. the molecules speed up. the molecules slow down and then speed up. the molecules speed up and then slow down. 2. how might human activities change to compensate for a decrease in water supplies? (2 points) humans might build a factory. humans might build drainage systems. humans might extract more water from the ground. human behavior does not change because of the water cycle. i'll be grateful if anyone can answer these 2 questions !
Answers: 1
Physics, 22.06.2019 11:50, morenodonaldo762
The electric field between square plates of a parallel-plate capacitor has magnitude e. the potential across the plates is maintained with constant voltage by a battery as they are pulled apart to twice their original separation, which is small compared to the dimensions of the plates. the magnitude of the electric field between the plates is now equal to a)e b)e/4 c)e/2 d)4e e)2e
Answers: 1
1. 412.9 g of dry ice sublimes at room temperature. a. what’s changing? sublimation b. what consta...
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