Answer:
Phosphorus
Explanation:
Group V elements- Nitrogen, Phosphorous
period 3- Sodium, Magnesium, Aluminium, Silicon , Phosphorous, Sulphur, Chlorine and Argon
Group v and period 3 is phosphorus
Oil, petroleum
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Answer:
Sodium oxide
Magnesium oxide
Explanation:
Because both of the oxides are bases
This is the complete question with grammar corrections:
A glass vessel calibrated to contain 9.76 mL at 4° C was found to weigh 22.624 g when empty and dry. Filled with a soduim chloride (NaCl) solution at the same temperature , it was found to weigh 32.770 g. Calculate the solution's density.
Answer:
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Explanation:
<em>Density</em> is the physical property that expresses the amount of matter (mass) per voumetric unit of solution:
In this problem, you can first calculate the mass, by difference. After that, you just have to divide the mass by the volume of the glass vessel (9.76 ml as per the calibration).
This is the two steps procedure.
<u>1. Mass of the solution:</u>
- Mass of solution = mass of the vessel filled with the solution - mass of the vessel, empty and dry
Mass of solution = 32.770 g - 22.624 g = 10.146 g
<u>2. </u><em><u>Solution's density</u></em><u>:</u>
- density = mass / volume = 10.146 g / 9.76 ml = 1.0395 g / ml ≈ 1.04 g/ml
The density is rounded to 3 significant digits because the volume, which is dividing the mass, was reported with 3 significant digits.
1s2 2s2 2p6 3s2 3p1 is the electron configuration of Aluminum, written as Al.
