Answer:A
Explanation:
In the Biuret test, the copper ions bind covalently to the amino groups as shown in the image to form a violet complex. This violet complex is responsible for the colour change as shown
Sulfur is best to bind with oxygen. A covalent bond is a bond between two nonmetal elements. Aluminum is a metalloid and sodium is a metal. Both can't be bonded with sulfur. Neon isn't a metal but is a group 18 element, it's a noble gas. And a noble gas cannot be combined with any element because it already achieved a total of 8 valence electrons. Oxygen on the other hand can be bonded with sulfur since both are non metals
From smallest to largest it will be first Carbon,Water,Carbohydrate,Mitochondria, Skin Cell.
The mass of 2.80 grams of h2o is 18.02 amu I believe
Answer:
Cloudy nights can be warmer than clear nights because clouds trap heat absorbed by Earth during daylight hours.
