What elements make up amino acids? Look up the structures of the 20 amino acids in your textbook and list the 5 elements present.

- carbon (C)

- hydrogen (H)

- oxygen (O)

- nitrogen (N)

- sulfur (S)

Explanation:

Amino acids are organic molecules which base chemical structure is composed by:

- a carbon atom (C)

- a carboxyl group (-COOH)

- an amino group (-NH₂)

- a side chain- called R group- which varies in different amino acids. It can be composed by N, H, O, C and sometimes S.

According to this, the five chemical elements that are present in amino acids are:

- carbon (C)

- hydrogen (H)

- oxygen (O)

- nitrogen (N)

- sulfur (S)

what is the volume occupied by 40 grams of argon gas (ar) at standard conditions? what volume, in liters, is occupied by 1.5 x 1023 

when the volume of gas is   changed from   717.73 ml   to 852 ml   the temperature will   change   from 315   c to 452   c

    calculation

this is calculated using the charles law formula

that is,   v1/t1 = v2/t2

          v1=?

        t1 = 315 c   into   kelvin = 315 +273 = 588 k

        v2 = 852   ml

        t2 = 425c + 273 =698 k

make v1   the subject of the formula ( by   multiplying both side by t1)

  v1=( v2 xt1) / t2

v1= (852 ml   x 588 k)/ 698 k= 717.73 ml