There aren't any options given but I would say the answer is "continuous spectrum"
Answer:
m O2 = 116,16 g
Explanation:
Ca(ClO3)2 ------------> CaCl2 + 3O2
n Ca(ClO3)2 = 250/207 = 1,21 mol
n O2 = 3n Ca(ClO3)2 = 1,21 * 3 = 3,63 mol
m O2 = 3,63 * 32 = 116,16 g
Answer:
20 electrons
A neutral atom with atomic number 20 will have 20 electrons.
The atomic number is, by definiton, the number of protons in an atom's nucleus but for a neutral atom it's also equal to the number of electrons. Each element has a different, unique number of protons that determines its identity.
Explanation:
Answer:
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Explanation:
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Answer:
d) V = 91.3 L
Explanation:
Given data:
Volume of nitrogen = ?
Temperature = standard = 273.15 K
Pressure = standard = 1 atm
Number of atoms of nitrogen = 2.454×10²⁴ atoms
Solution:
First of all we will calculate the number of moles of nitrogen by using Avogadro number.
1 mole = 6.022×10²³ atoms
2.454×10²⁴ atoms × 1 mol / 6.022×10²³ atoms
0.407×10¹ mol
4.07 mol
Volume of nitrogen:
PV = nRT
1 atm × V = 4.07 mol ×0.0821 atm.L /mol.K ×273.15 K
V = 91.3 atm.L /1 atm
V = 91.3 L
