Answer:
Ther answerr is A only solid A.
Explanation:
The density of water is 1 g/cm3 so anything above that will sink, but as you can see solid A dosnt ev en reach one./ so It will float on water. the other two are over 1 g/cm3.
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Answer:
Physical change
Explanation:
The molecules are being rearranged as the water changes phases from liquid to gas, but this doesn't change the chemical structure of the water.
Answer:
a. Each set of elements was arranged in special coloumns based on their mass.
Lithium i think!!
hope this helps
Answer:
3.52 moles are equal to 21.2 ×10²³ molecules
Explanation:
Given data:
Number of moles of oxygen fluoride = 3.52 mol
Number of molecules = ?
Solution:
The given problem will solve by using Avogadro number.
1 mole contain 6.022×10²³ molecules
3.52 mol ×6.022×10²³ molecules / 1 mol
21.2 ×10²³ molecules
Thus, 3.52 moles are equal to 21.2 ×10²³ molecules .
