Most likely White or another color that appears "bright" to us, such as gold, silver, yellow, pink, or sometimes green. Hope it helped!
Answer:
<h3>The answer is 14036.54 moles</h3>
Explanation:
To find the number of moles in a substance given it's number of entities we use the formula
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question
N = 8.45 x 10^27 molecules of H2O
We have
We have the final answer as
<h3>14036.54 moles</h3>
Hope this helps you
Quartz has the formula SiO2
From the periodic table:
mass of oxygen = 16 grams
mass of silicon = 28.0855 grams
Mass of one mole of quarts = 28.0855 + 2(16) = 60.0855 grams
number of moles = mass / molar mass
number of moles = 1.6 / 60.0855 = 0.0266 moles
Each mole of quartz contains Avogadro's number of atoms.
Therefore:
number of atoms in 1.6 g = 1.6 x 6.02 x 10^23 = 1.603 x 10^22 atoms
The element that has the smallest atomic radius is TITANIUM.
In the periodic table, the value of atomic radii of elements varies across the period and down the group. Generally, the atomic radii decreases across the period and increases down the group. Looking at the element given in the question, you will notice that they all belong to one period and the last on that period is titanium, thus, it has the smallest atomic radii.
The answer to that question is 58.4 g/mol.