Argon is the noble gas for titanium
The third launch ( with 300 N force) had the greatest acceleration of the tennis ball
<h3>Further explanation </h3>
Newton's 2nd law explains that the acceleration produced by the resultant force on an object is proportional and in line with the resultant force and inversely proportional to the mass of the object
∑F = m. a
F = force, N
m = mass = kg
a = acceleration due to gravity, m / s²
From the above equation it has been shown that the force acting on the object is directly proportional to its acceleration, so <em>the greater the force exerted on the object, the greater the acceleration of the object produced.</em>
Answer:
sodium atom
Explanation:
the sodium ion loses a valence shell when it ionizes. The sodium atom retains this valence shell which adds to its radius
Answer:
- <u><em>0.2 mol of CaCl</em></u><em><u>₂</u></em>
Explanation:
<em>Freezing point</em> depression of a solution, when a nonvolatile solute is dissolved in a solvent, is a colligative property, which means that it depends on the number of particles of solute dissolved.
The equation is:
Where:
- ΔTf is the decrease in the freezing point
- m is the molal concentration
- kf is the molal freezing point depression constant, which depends on the solvent
- i is the nan't Hoff factor, which accounts for the dissociation of ionic compounds.
Since the volume is the same for all the solutoins, the molal concentration will be higher for those solutions with more number of moles. Then, cross out the first two choices.
Since CaCl₂, in ideal conditions, dissociates into 1 Ca²⁺ ion and 2 Cl⁻ ions, the van't Hoff factor is 3, while for the molcecular C₆H₁₂O₆ it is 1.
Thus, the lowest freezing point will be produced by the sample of 0.2 mol of CaCl₂.
The number with a lower value is the number of protons and the number with a higher value is the mass