Answer:
1000 ml - 1.55M 600 ml - x X 600*1.55/1000=0.93 M
Adding substance to a liquid disturbs the lattice in which the liquid settles into to become a solid. To overcome this disturbance, a lower temperature is required. The answer is A, where the prevalence of NaCl is higher than all the others. This means that this compound is present more frequently to affect the lattice more than the others, requiring a much lower freezing temperature.
Answer:
No.
Explanation:
No. There is 1 atom of Ca on the left and 2 Ca's on the right and 2 OH's on the left and 4 on the right.
The balanced equation is:
4OH- + 2Ca2+ ----> 2Ca(OH)2.
Answer:
B)
Explanation:
Dalton was the first scientist to propose an atomic model. He said that each element is composed of extremely small particles called atoms, which are indivisible, atoms of a given element are identical, and atoms of different elements have different properties.
With the advance of the studies, it was proven that elements are composed of small particles, atoms and that the atoms of each element are identical, and have different properties from atoms of different elements.
But, now we know that the atom can be divisible: it's formed by electrons, protons, and neutrons. So only postulate <em>ii</em> is no longer considered valid.