Answer:
12.044 ×10²³ molecules of HCl
Explanation:
Given data:
Number of moles of MgO = 1 mol
Number of molecules of HCl react = ?
Solution:
Chemical equation:
MgO + 2HCl → MgCl₂ + H₂O
with 1 mole of MgO 2 moles of HCl are react.
Number of molecules of HCl react:
1 mole contain 6.022×10²³ molecules
2 mol × 6.022×10²³ molecules / 1 mol
12.044 ×10²³ molecules
Answer:
There are 10 types
Explanation:
Cytokines are the molecules produced by the immune cells involved in the immune response like the B cells, T cells, macrophages and other cells.
They are produced as a means of communication between the immune cells which could act as a signalling molecule. The chemical nature of these cytokines is that they are either the proteins or the glycoproteins.
There are many types of cytokine produced in response to antigens which could be interleukin, interferon which could play a different role.
These cytokines are present in more than 10 types of forms therefore the selected option is correct.
Iodine (iodine-potassium iodide) staining distinguishes starch ( a polysaccharide) from monosaccharides, a disaccharides and other polysaccharides. Therefore, a bluish black color is a positive test for starch, and a yellow-ish brown color ( no color change) is a negative test for starch.
Water takes shape of the container that it is currently in. ( like a cylinder cup, or a cube shape)
More specifically two atoms but this is indeed true. The elements do not need to be different but there can only be two atoms. The prefix indicates the quantity of two. Di - means "of two".
