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 14:10, shawnnoteman1234
What is the perimeter, p, of a rectangle that has a length of x + 8 and a width of y β 1? p = 2x + 2y + 18 p = 2x + 2y + 14 p = x + y β 9 p = x + y + 7
Answers: 3
Mathematics, 21.06.2019 16:40, chrisraptorofficial
14 pointslet x be the seats in the small van and y the seats in the large van. how many seats does the large van have? a company uses two vans to transport worker from a free parking lot to the workplace between 7: 00 and 9: 00a. m. one van has 9 more seats than the other. the smaller van makes two trips every morning while the larger one makes only one trip. the two vans can transport 69 people, maximum. how many seats does the larger van have?
Answers: 1
In an experiment, seth was given a substance known as ammonium carbonate, (nh4)2co3. seth connected...
History, 04.11.2019 05:31
Mathematics, 04.11.2019 05:31
Mathematics, 04.11.2019 05:31
Biology, 04.11.2019 05:31