Mathematics, 25.12.2019 04:31 pmdare2551
In an experiment, seth was given a substance known as ammonium carbonate, (nh4)2co3. seth connected a bunsen burner to the gas valve using a gas hose. he turned on the gas valve and lit the bunsen burner. using a test tube, seth heated a piece of ammonium carbonate. seth noticed the following:
- condensation appeared on the sides at the top of the test tube.
- an ammonia smell was coming from the test tube.
seth continued to light a wooden splint and stick it down the test tube and it immediately was extinguished.
throughout this experiment, how many signs of chemical changes were observed and actual chemical changes took place?
a) 4
b) 5
c) 6
d) 7
Answers: 1
Mathematics, 21.06.2019 15:40, FailingstudentXD
Each of the walls of a room with square dimensions has been built with two pieces of sheetrock, a smaller one and a larger one. the length of all the smaller ones is the same and is stored in the variable small. similarly, the length of all the larger ones is the same and is stored in the variable large. write a single expression whose value is the total area of this room. do not use any method invocations.
Answers: 1
Mathematics, 21.06.2019 19:30, ochoanene822
Which of the following transformations will always produce a congruent figure?
Answers: 2
In an experiment, seth was given a substance known as ammonium carbonate, (nh4)2co3. seth connected...
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