Chemistry, 08.01.2022 17:10, sabrinabowers4308
Very small crystals composed of 1,000 to 100,000 atoms, called quantum dots, are being investigated for use in electronic devices. A quantum dot was made of solid silicon in the shape of a sphere with a diameter of 9 nm.
a. Calculate the mass of the quantum dot using the density of silicon of 2.3 g/cm3
b. How many silicon atoms are in the quantum dot?
Answers: 1
Chemistry, 22.06.2019 02:00, hemolelekeakua
The alkali metals (group 1) consist of lithium (3), sodium (11), potassium (19), rubidium (37), cesium (55), and francium (87). they are soft, metallic solids with low densities and low melting points. based on the data shown in figure 1, how many valence electrons do alkali metals share?
Answers: 3
Chemistry, 22.06.2019 07:30, genyjoannerubiera
Identify two types of chemical bonding in the source of dietary potassium
Answers: 3
Very small crystals composed of 1,000 to 100,000 atoms, called quantum dots, are being investigated...
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