Rachel is given 50 grams each of three different white powders that look very similar She is told that each of these powders is
commonly used in cooking Without tasting any of them, she is asked to try to identify them. She is told the amounts of sugar and
salt that can each be dissolved in 100 ml of water
Substance
table sugar
Solubility
(9 per 100 ml water
211
36
table salt
four
not soluble
Rachel adds all 50 grams of one powder to 100 mL of water and stirs it for a while. Afterwards, she has a clear liquid with some
powder on the bottom
Which of the following could this powder have been?
A. salt
B. flour
C. sugar
D. allof these

Define a is a tiny pavket of energy

If you need to add 27.50ml of a solution, which piece of glassware would you use to deliver this volume and explain how you would determine if the 27.50 ml was measured?

The allotropes of carbon include a variety of structures that include three-dimensional tetrahedral lattices, planes of hexagonal rings, cylindrical tubes of hexagonal rings, and spheres of five- and six-membered rings. similar shapes of network covalent atomic solids are possible with carbon nitride, boron, and pure silicon (e.g., silicene is a graphene-like allotrope of pure silicon). in contrast, silicates exist as either highly ordered or amorphous (more random) three-dimensional lattices. what could explain why there are there no naturally occurring sheets, stacked sheets, cylindrical tubes, or spheres of network covalent atomic solids composed of silicon and oxygen (sio2)? would pure silicate structures make good lubricants or good electrical conductors?