Answers: 3
Physics, 22.06.2019 08:00
While studying chemical reactions and conservation of matter, sarah's class conducted a variety of experiments. sarah and her lab partner found the mass of a wax candle and placed the candle in a flask. the students lit the candle and let it burn to completion. all that was left was wax and charred candle wick. per their teacher's instructions, the students found the mass of the products. their data can be seen in the data table. formulate a hypothesis the students could test to explain why the experiment did not support the law of conservation of matter. a) the students could repeat the experiment using different candles; there might have been a flaw in the candle. b) the experiment should be repeatable. the students should run several trials and then take an average of the after mass in each trial. c) the students should have someone in the class check their measurement skills as they repeat the experiment. they may have made an error using the balance. d) the students should burn the candle in a container that has some type of lid so that any gas that is a product of the reaction can be contained and massed. submit
Answers: 2
Physics, 22.06.2019 09:30
True or false graphs must include scales that increase by the same amount
Answers: 1
Physics, 22.06.2019 15:00
When is a current produced? when the terminals of an electrochemical cell are connected by a wire if the electric circuit is opened in an electrochemical cell if the electrolyte is removed from an electrochemical cell when the electrodes are reversed in an electrochemical cell
Answers: 1
Physics, 22.06.2019 19:30
Coal contains energy. a. light b. kinetic c. chemical d. mechanical
Answers: 1
find the distance traveled in km when the average speed is 60 km per hour and the time taken is 3 an...
Mathematics, 17.12.2020 09:10
Chemistry, 17.12.2020 09:10
Arts, 17.12.2020 09:10
World Languages, 17.12.2020 09:10
English, 17.12.2020 09:10
Mathematics, 17.12.2020 09:10
Arts, 17.12.2020 09:10
Mathematics, 17.12.2020 09:20
Biology, 17.12.2020 09:20