Answer: 38 km = 38000 meters
Explanation:
1 km = 1000 meters
38 km= 38000 meters
Answer:
5
Explanation:
The maximum numbers of d orbitals are 5. These are named as dz², dxy, dyz, dzx, dx² - y².
The number of maximum electrons accommodate in d orbitals are,
l = 2
2 ( 2(2) + 1)
2( 4 + 1)
10
so maximum electrons in d subshell are 10.
The 1st and second energy level do not have d orbitals. Third energy level in addition to s and p orbitals contain d orbitals.
Energy level sublevel N of orbitals No of electrons
1 s 1 2
2 s 1 2
p 3 6 (total=8)
3 s 1 2
p 3 6
d 5 10 (total=18)
Answer:
The molarity is 8.52M
Explanation:
molality = moles of solute/kg of solvent = 5.2mol/kg
moles of solute = 5.2mole
mass of solute = moles of solute × MW = 5.2 × 56.106 = 291.8g
mass of solvent = 1kg = 1000g
mass of solution = mass of solute + mass of solvent = 291.8g + 1000g = 1291.8g
Density of KOH = 2120g/L
Volume of solution = mass/density = 1291.8/2120 = 0.61L
Molarity = number of moles of solute/volume of solution = 5.2/0.61 = 8.52M
The correct answer is D<span>) remains hazardous for a long time. Nuclear waste stays radioactive for many centuries.
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This is generally buried underground, so it does not cause significant air pollution, greenhouse effect, or acid rain<span>. These three are mostly caused by particulate matter or greenhouse gases that are emitted into the atmosphere
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