Kylie has two glasses with equal volumes of pure water. she adds 40 g of sugar to one of the glasses of water and 40 g of salt to the other. when sugar is dissolved in water, it does not change the number of ions present. when salt is dissolved in water, however, the number of ions significantly increases. which of the following is true about the electrical conductivity of kylie's two solutions?
Answers: 1
Physics, 22.06.2019 16:30, xxaurorabluexx
An astronaut in space cannot use a scale or balance to weigh objects because there is no gravity. but she does have devices to measure distance and time accurately. she knows her own mass is 77.4 kg , but she is unsure of the mass of a large gas canister in the airless rocket. when this canister is approaching her at 3.50 m/s , she pushes against it, which slows it down to 1.30 m/s (but does not reverse it) and gives her a speed of 2.60 m/s . what is the mass of the canister?
Answers: 1
Physics, 22.06.2019 21:00, estebencampos69
Aflask with vinegar in it has a mass of 160 grams. a balloon with baking soda in it has a mass of 40 grams. the balloon is attached to the flask to seal the opening and the vinegar and baking soda mixes. the balloon inflates to a large volume. what will the total mass of the balloon and flask be after the balloon inflates? explain. a) less than 200 grams because the solid baking soda disappears. b) 200 grams, because all the atoms remain in the balloon or flask. c) more than 200 grams because the size of the balloon is so much larger. d) less than 200 grams because gases such as the one in the balloon are lighter than solids and liquids.
Answers: 1
Physics, 22.06.2019 22:20, bryanmcmillianjr
Which symbol in the first law of thermodynamics represents the sum of the chemical and thermal energy stored in atoms and molecules? a. q b. w c. v d. u
Answers: 3
Kylie has two glasses with equal volumes of pure water. she adds 40 g of sugar to one of the glasses...
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