Chemistry, 10.07.2019 23:30 savthespice
Amedicine has 421 mg of active ingredient per tablet. how many grams is this? a. 421000gb. 42.1 gc. 4.21 gd. 0.421 g
Answers: 1
Chemistry, 22.06.2019 06:00
If you burn 10 kilograms of wood in a fire (combustion) what is the weight of the products after the fire has finished burning the wood?
Answers: 3
Chemistry, 22.06.2019 10:00
Which sentence about particles in matter is true? a. atoms are present in solids and liquids but not in gases. b. the particles of matter are in constant motion. c. the same kinds of atoms are found in different elements. d. when a solid changes to a liquid, the sizes of the particles change.
Answers: 1
Chemistry, 22.06.2019 12:30
Nebulae are enormous clouds in outer space. they are made mostly of hydrogen gas, helium gas, and dust. some nebulae glow brightly, while others do not. the stars that people see are huge, bright balls of glowing gas. they are made mostly of hydrogen and helium. which statement correctly describes other ways in which nebulae and stars are different? a. stars can form inside a nebula but a nebula can never be produced by any star. b. a star always has a higher density than a nebula. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star.
Answers: 3
Chemistry, 22.06.2019 20:00
In vapor-liquid equilibrium in a binary mixture, both components are generally present in both phases. how many degrees of freedom are there for such a system? the reaction between nitrogen and hydrogen to form ammonia occurs in the gas phase. how many degrees of freedom are there for this system? steam and coal react at high temperatures to form hydrogen, carbon monoxide, carbon dioxide, and methane. the following reactions have been suggested as being involved in the chemical transformation:
Answers: 3
Amedicine has 421 mg of active ingredient per tablet. how many grams is this? a. 421000gb. 42.1 gc....
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