By lowering temperature from liquid to solid, atoms lose some of their energy, when atoms slow down, they move close together and make the matter denser.
Wear a chemical-resistant apron, chemical-resistant gloves and chemical splash goggles at all times when handling HCl to protect your eyes and skin. Concentrated hydrochloric acid is toxic if inhaled, so avoid breathing it in and always handle it while under a fume hood.
Answer:
you would more than likely have hot coca.
Explanation:
Because when its cold out you don't want something cold, its common sense lol.
Answer:
(a) calcium forms the Molar mass of CaO is 40+16 g=56g.
Mass of CaO obtained 56x3 g= 168 g CaO
(b)
Answer:
The compound is most likely to be MgCl2.
Explanation:
Let the element with 2 valence electrons be X
Element with atomic number 17 is Cl.
The compound formed can be obtained as follow:
1. X will lose the 2 valence electrons to form X^2+ as shown below:
X —> X^2+ + 2e- (1)
2. Two Cl atoms will receive the 2 electrons as shown below:
2Cl + 2e- —> 2Cl- (2)
3. Combine equation 1 and 2.
X + 2Cl 2e- —> X^2+ +2Cl- + 2e-
Cancel out the electrons
X + 2Cl —> X^2+ + 2Cl-
X + 2Cl —> XCl2
Now, X is a group 2 element since it has 2 valence electrons. Therefore, X is most likely to magnesium, Mg.
Mg + 2Cl —> MgCl2.
Therefore, the compound is most likely to be magnesium chloride MgCl2