18
loose plug of cotton wool
dilute hydrochloric acid
.
Db
o a
o
magn...
Chemistry, 01.02.2021 15:50 littlesami105
18
loose plug of cotton wool
dilute hydrochloric acid
.
Db
o a
o
magnesium ribbon
Fiqure 6
The word equation for the reaction between magnesium and dilute hydrochloric acid is
magnesium + hydrochloric acid magnesium chloride + hydrogen
The reaction was carried out using the apparatus shown in Figure 6.
A strip of magnesium ribbon was placed in the conical flask.
100 cm3 of dilute hydrochloric acid was added to the conical flask.
The mass of the flask and contents was measured at regular intervals.
The loss in mass was calculated.
Figure 7 shows a graph of the results.
Name the apparatus that could be used to measure out 100 cm3 of dilute hydrochloric acid. *
(1 Point)
Answers: 2
Chemistry, 22.06.2019 14:00
Anthracite is so hard and pure it is also referred to as a renewable resource metamorphic rock hot bituminous coal dirty fuel
Answers: 1
Chemistry, 22.06.2019 15:10
The ozone molecule o3 has a permanent dipole moment of 1.8×10−30 cm. although the molecule is very slightly bent-which is why it has a dipole moment-it can be modeled as a uniform rod of length 2.5×10−10 m with the dipole moment perpendicular to the axis of the rod. suppose an ozone molecule is in a 8000 n/c uniform electric field. in equilibrium, the dipole moment is aligned with the electric field. but if the molecule is rotated by a small angle and released, it will oscillate back and forth in simple harmonic motion.what is the frequency f of oscillation?
Answers: 2
Chemistry, 22.06.2019 22:00
How many moles of no2 will form when 3.3 moles of cu are reacted with excess hno3?
Answers: 3
Chemistry, 23.06.2019 02:30
Asubstance is held in an open container. its particles move past one another at random speeds but do not leave the container. heat is removed from the system, and the particles slow down. when enough heat is removed, the particles no longer have enough speed to overcome the weak attractive forces between them. when this happens, the substance enters its solid state. the process described above is known as .
Answers: 3
History, 30.01.2020 20:51
Physics, 30.01.2020 20:51
English, 30.01.2020 20:52
Chemistry, 30.01.2020 20:52
Mathematics, 30.01.2020 20:52
Mathematics, 30.01.2020 20:52
History, 30.01.2020 20:52
Physics, 30.01.2020 20:52
English, 30.01.2020 20:52
Chemistry, 30.01.2020 20:52
Social Studies, 30.01.2020 20:52
Mathematics, 30.01.2020 20:52