Answer:
Some of KCl will precipitate out of the solution.
Explanation:
Gases solubility increases with decrease in temperature and therefore nitrogen gas will not bubble out is the temperature is dropped from 75 deg C to room temperature.
On the other hand, KCL is a salt in solid state and the solubility of solids decreases with decrease in temperature. Therefore some of the KCl will precipitate out of the solution when temperature drops from 75 deg C to room temperature.
<span>The surface area is 109.3 square centimeters or 0.01093 square meters. The area formula requires that we use the radius of the disc. We can find the radius by diving the diameter by 2, so radius = 11.8/2 or 5.9 cm. We can use 3.14 as an approximation for π. The surface area is 3.14 * (5.9*5.9).
Since the diameter is given in cm, the surface area units are in square centimeters. To convert to meters, divide any measurement in centimeters by 100, but we need to convert to "square" meters, so we need to divide our square centimeters by 100 * 100, or by 10,000. Dividing 109.3 by 10,000 results in 0.01093 square "meters".</span>
Answer:
an ionic bind occurs between a metal and a nonmetal.
ex: NaCl
Answer:
according to newtons second law
F=ma
mass of the balloon =0.020 kg
gravity = 9.8m/8^2
force = 0.020 x 9.8
= 1.96 N
x (times) hope it helps