Answer:
1.7700×10^-22 g
Explanation:
A face-centered-cubic cell contains 4 atoms, so the volume per atom is ...
(389.80×10^-12 m)³/(4 atoms) ≈ 1.4725×10^-29 m³
Then the mass of 1 atom is ...
(12020 kg/m³)(1.4725×10^-29 m³) ≈ 1.76995×10^-25 kg
≈ 1.7700×10^-22 g
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<em>Additional comment</em>
That is the approximate mass of a Palladium atom.
Answer: It turns the blue litmus paper to red.
Explanation: A blue litmus paper deeped in a solution of HCl will turn to red, indicating the presence of H+ or H30+, and telling us the solution is an acid.
Answer: An ecosystem is a geographic area where plants, animals, and other organisms, as well as weather and landscape, work together to form a bubble of life. Ecosystems contain biotic or living, parts, as well as abiotic factors, or nonliving parts
HOPE THIS HELPS
The boiling point and melting point of substances is determined by their molecular weight and the cohesion (stickiness) of the individual molecules in the substance.
Based on the cohesive molecule - molecule interactions of a substance, it may have either a high melting and boiling point or vice versa. The stronger the cohesive interactions the more the heat required for the substance's transition into liquid and gas state.
These intermolecular forces include hydrogen bonding , ionic bonding, dipole dipole, and Van Der Waals dispersion forces.
Answer:
• From avogadro's number:
![{ \tt{6.02 \times {10}^{23} \: atoms = 1 \: mole}} \\ { \tt{7.89 \times {10}^{28} \: atoms = (\frac{7.89 \times {10}^{28} }{6.02 \times {10}^{23} } )}} \\ \\ = { \tt{1.31 \times {10}^{5} \: moles }}](https://tex.z-dn.net/?f=%7B%20%5Ctt%7B6.02%20%5Ctimes%20%20%7B10%7D%5E%7B23%7D%20%20%5C%3A%20atoms%20%3D%201%20%5C%3A%20mole%7D%7D%20%5C%5C%20%7B%20%5Ctt%7B7.89%20%5Ctimes%20%20%7B10%7D%5E%7B28%7D%20%20%5C%3A%20atoms%20%3D%20%20%28%5Cfrac%7B7.89%20%5Ctimes%20%20%7B10%7D%5E%7B28%7D%20%7D%7B6.02%20%5Ctimes%20%20%7B10%7D%5E%7B23%7D%20%7D%20%29%7D%7D%20%5C%5C%20%20%5C%5C%20%20%3D%20%7B%20%5Ctt%7B1.31%20%20%20%5Ctimes%20%20%7B10%7D%5E%7B5%7D%20%5C%3A%20moles%20%7D%7D)