Answer:
H₂O₂
Explanation:
The molecular formula gives the exact number of atoms within a chemical compound.
In this problem:
Mass of O = 32g
Mass of H = 2g
Let us follow this methodical approach to solve the problem:
Elements O H
Mass 32 2
Molar mass 16 1
Number of moles 32/16 2/1
2 2
The molecular formula of the compound is H₂O₂
Use the formula
E=mc^2
plug the values,
The amount of mass in kilograms would be lost is 8.71 x 10^-10
Answer:
43.868 J
Explanation:
Kinetic energy of a body is the amount of energy possessed by a moving body. The SI unit of kinetic energy is the joule (kg⋅m²⋅s⁻²).
According to classical mechanics, kinetic energy = 1/2 m·v²
Where, m= mass in kg and v= velocity in m/s
Given: m = 19.2 lb and v = 7.10 miles/h
Since, 1 lb= 0.453592 kg
∴ m = 19.2 lb = 19.2 × 0.453592 kg = 8.709 kg
Also, 1 mi = 1609.34 m and 1 h = 3600 sec
∴ v = 7.10 mi/h = 7.10 × 1609.34 m ÷ 3600 sec = 3.174 m/sec
Therefore, <u>kinetic energy of the goose</u> = 1/2 m·v² = 1/2 × (8.709 kg)× (3.174 m/sec)² = 43.868 J
1.) One valence electron
2.) 3.
3.) Group 13, period 4
4.) 1s2, 2s2, 2p6, 3s2, 3p1
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