The unit "m" in this given is used to refer to molality which is equal to the number of moles of the solute divided by the mass in kg of the solvent. If we let x be the mass of iodine, the equation for molality then becomes,
molality = (x / 253.8) / ((950 mL)(1.594 g/mL)(1 kg/ 1000 kg)
0.75 = (x / 253.8) / 1.5143
The value of x 288.247 g
Answer: 288.25 g
Answer:
A
Explanation:
The formula for mechanical energy is mechanical energy = kinetic energy + potential energy.
Answer:

Explanation:
1. Atomic mass of T
To get the atomic mass of T, you calculate the weighted average of the atomic masses of the isotopes.
That is, you multiply the atomic mass of each isotope by a number representing its relative importance (e.g.., its percent of the total).

2. Identity of T
Lithium has an atomic mass of 6.64 u.
Element T is lithium.