![hadellolo8839](/avatars/8233.jpg)
hadellolo8839
18.05.2021 •
Chemistry
How many molecules are in 32.4 grams of phosphorous pentoxide?
Solved
Show answers
More tips
- G Goods and services How to Choose a Bread Maker?...
- A Art and Culture Who Said The Less We Love a Woman, the More She Likes Us ?...
- F Family and Home How to Get Rid of Your Neighbors?...
- S Society and Politics How Could Nobody Know About the Dead Mountaineers?...
- H Health and Medicine How to Cure Adenoids?...
- H Health and Medicine Why Wearing a Back Brace Can Be Beneficial During Back Strain?...
- S Sport When and Where Will the 2014 World Cup be Held?...
- C Computers and Internet How to Choose a Monitor?...
- H Horoscopes, Magic, Divination Where Did Tarot Cards Come From?...
Answers on questions: Chemistry
- C Chemistry Ten cm3 of molar solution of nitric acid(hno3) is added to 10 cm3 of a one molar solution of calcium hydroxide (ca(oh)2 solution? b): what is the resulting hydronium ion concentration...
- C Chemistry High tide; low tide; higher; lower; Sun; Moon; tidal cycle; right (90*); (earth, sun and moon) laim: The gravitational pull of the and the affect Earth’s . Evidence: Looking at the...
- C Chemistry Highlight main approaches that could be used to investigate the waterer Quality....
- C Chemistry (HELP QUICK) If litmus paper is dipped in an acidic solution, what will happen? The paper will turn blue. The solution will turn red. The paper will turn red. The solution will turn...
- C Chemistry Just send me one email stitchXpika it ll be worth it...
- C Chemistry Para medir la magnitud de la velocidad de la corriente en un río se introduce en él un tubo de Pitot, la altura a la que llega el agua dentro del tubo es de 0.2 m. ¿A qué magnitud...
- C Chemistry W ental Drift and Plate Tectonics Recall what you have learned about continental drift and plate tectonics. Sort the information into the correct categories Pangaea broke and spread...
- C Chemistry Use the table to answer the question. Observations 1: sunny and warm 2: cloudy and rainy 3: drop in temperature 4: clear skies and cold temperatures A student tracks the daily weather....
- C Chemistry I need another help pls...
- C Chemistry A2.5 l sample of gases at stp (standard temperature and pressure is 273 k and 1.00 atm). when the temperature is raised to 273degrees celsius and the pressure remains constant the...
Ответ:
The metal = Platinum(Pt)
Further explanationFCC : Face centered cubic : the unit structures of the unit cell((other than BCC, HCP)
In FCC ⇒ atoms on every corner and side (total 4 atoms)
The length of the face diagonal (b) = 4 times the atomic radius (r)
Formula :
Ar = atomic mass, g/mol
No = Avogadro number = 6.02.10²³
n = number of atoms
V = volume (cm³)
a = side length
b = diagonal of the side surface
r = atomic radius
a= 392 pm=3.92 x 10⁻⁸ cm
ρ = 21.45 g/cm³
The atomic mass :
radius :
Element with atomic mass 195 g/mol and radius = 139 pm (1.386x10⁻⁸cm) = Platinum(Pt)