<u>Answer:</u>
<em>B. A and B</em>
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<u>Explanation:</u>
1. Solids have a definite volume, definite size and definite shape
2. The particles present in a solid are very closely packed since the intermolecular forces between them are very strong. The molecules do not move apart.
3. Melting point is the temperature at which solid changes into a liquid.
4. When a solid is heated to the melting point the intermolecular forces are overcome by the energy and the molecules present in it moves from its fixed position to take its liquid state which is called as melting.
Answer:
ΔS = - 0.125 Kj/K decreased entropy
Explanation:
From ΔH = TΔS => ΔS = ΔH/T
= 100Kj/(600K - 1400K) = - 188Kj/800K = - 0.125 Kj/K
Entropy in the cooler flask would have 'decreased' (i.e.; more ordered state) at 600K.
Answer:
120 g of NaCl in 300 g H20 at 90 C
Explanation:
At x = 90 go vertical to the line for NaCl...then go left to the y-axis to find the solubility in 100 g H20 = 40
we want 300 g H20 so multiply this by 3 to get 120 gm of NaCl in 300 g
The number of protoms tells you what position of the element on the periodic table is
Answer:
B 2
Explanation:
I checked it and it’s right hope this helps!!
