- How many moles of this element are there?
1000000 atoms ( 1 mol / 6.022x10^23 atoms ) = 1.66 x 10^-18 mol of the element
- What is the molar mass of this element?
Molar mass = 1.99 x 10 ^-17 grams / 1.66 x 10^-18 mol = 11.98 g/mol
- What is the identity of this element?
The identity most likely is closest to carbon which has a molar mass of 12.01 g/mol.
Answer:
Its helium
Explanation: Because teh effective nuclear charge holds the valence ectrons clos to the nuclues. the Atomic radius would decrease as you move from the led=ft and right of the perodic table
Answer:
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Explanation:
The <em>blue whale </em>is the largest animal on Earth. The length of a blue whale is about 25 m, although is is said the largest confirmed measure is 29.9m.
The<em> tiny frogs </em>measure about 10mm.
You can estimate the number of tiny frogs that have the same <em>length</em> as a blue whale dividing the approximate average length of a blue whale by the approximate average length of the tiny frogs.
First convert 25m to mm:
- 25m × 1,000mm/m = 25,000 mm
Now, divide:
Hence, about 2,500 <em>tiny frogs sitting next to each other would measure the same length as a blue whale</em>.
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This is a true statement.
Here are some examples of ionic compounds:
Sodium chloride
Potassium fluoride
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