Chemistry, 02.04.2021 02:00 aidanwindsor1738
Once all safety equipment is in place, each student places a piece of aluminum foil into a test tube of hydrochloric acid. After a few seconds, the aluminum foil disappears and the bottom of the test tube feels hot. The balanced chemical reaction demonstrated in the investigation is shown below.
6HCl + 2Al à 3H2 + 2AlCl3
What evidence of a chemical reaction should the students cite for this investigation?
F. Change in color
G. Production of a gas
H. Increase in temperature
J. Formation of a precipitate
Answers: 1
Another question on Chemistry
Chemistry, 22.06.2019 08:30
Which part of earth’s surface receives the most direct rays from the sun? a) equator b) ocean c) poles d) mountains
Answers: 2
Chemistry, 22.06.2019 15:30
Using the first volume and temperature reading on the table as v1 and t1, solve for the unknown values in the table below. remember to use the rules of significant figures when entering your numeric response.
Answers: 1
Chemistry, 22.06.2019 16:10
Given the following equation: 2a1 + 3mgcl2 --> 2alcl3 + 3mg how many moles of aluminum chloride are produced from 2.5 moles of magnesium chloride?
Answers: 1
Chemistry, 23.06.2019 01:30
At a certain temperature the rate of this reaction is first order in hi with a rate constant of : 0.0632s2hig=h2g+i2g suppose a vessel contains hi at a concentration of 1.28m . calculate how long it takes for the concentration of hi to decrease to 17.0% of its initial value. you may assume no other reaction is important. round your answer to 2 significant digits.
Answers: 1
You know the right answer?
Once all safety equipment is in place, each student places a piece of aluminum foil into a test tube...
Questions
Mathematics, 23.06.2020 18:01
Health, 23.06.2020 18:01
English, 23.06.2020 18:01
Mathematics, 23.06.2020 19:01
Mathematics, 23.06.2020 19:01
Computers and Technology, 23.06.2020 19:01
Mathematics, 23.06.2020 19:01
Mathematics, 23.06.2020 19:01
