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Be sure to answer all parts.
What is the molarity of a solution prepared using the given amount of solute and total volume of
solution?
a. 8.0 mol of KCl in 4.90 L of solution: 0.76
X
b. 0.34 mol of NaNO3 in 656 mL of solution: 10.208
X

zfoods? ok, pressure is used to keep the heat inside and to keep the food perfect.

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

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.

answer; the numbers of valence electrons in the acetic acid molecule (ch3co2h) is 24;