Answer:
Cr3+ is green and V2+ is purple. Cr3+ and V2+ are both d3 so there can be a lot of movement between energy levels to produce colored light. Cd2+ and Hg2+ are both d10 (full d orbital, much less electron movement).
Explanation:
The correct answer is (2) density.
An intensive property of a substance is a property that will never change no matter what. Density is a constant and thus an intensive property.
Hope this helps~
Hello!
We have the following data:
m (mass) = 4.6 grams
MM (molar mass) of H2O
H = 2 * 1 = 2 amu
O = 1 * 16 = 16 amu
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MM (molar mass) of H2O = 2 + 16 = 18 g/mol
Solving:
Establishing a relation with Avogadro's number (6.10²³) we have:
18 g of H2O --------------- 6.10²³ molecules
<span>4.6 g of H2O --------------- y molecules
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Wavelength is simply equal
to the Speed of Light divided by the Frequency; L = c / f <span>
where c = 299,792,458 m/s therefore
L = (299,792,458 m/s) / (2.70E9 Hz)
= 0.1110 meters
= 111.0342 millimeters
= 111,034.2 micrometers
<span>= 111,034,200 nanometers</span></span>
Answer:
8,403,000 grams
Explanation:
1 kg = 1000 grams, so just multiply by a factor of 1000