KyrosStMarie
KyrosStMarie KyrosStMarie
  • 03-12-2018
  • Chemistry
contestada

You dissolve 40 grams of table salt into 0.25 L of water. What is the molarity of the solution?

Respuesta :

kenmyna
kenmyna kenmyna
  • 12-12-2018

 The  molarity  of the solution    is   2.736 M


calculation

Step 1: find  moles of  table  salt (Nacl)

moles =  mass ÷molar mass

from periodic table the  molar mass  of  table salt (NaCl) = 23+35.5 = 58.5 g/mol

moles is therefore = 40 g÷ 58.5 g/mol =0.684   moles

Step 2:  find  molarity

molarity =  moles÷ volume in liters

= 0.684  moles÷ 0.25 L=2.736 M

Answer Link

Otras preguntas

Suppose your grandparents put $500 into an investment that earns 12% interest each year. How much, to the nearest cent, will be in the account after 10 years
Write the standard equation of a circle with center (−9, −4) and radius 5
-1/14 - 9/14 Write the answer in simplist form?
How far from the base of the house do you need to place a 15-foot ladder so that it exactly reaches the top of a 12-foot tall wall?
Which of the following statements about the Ohio State is FALSE?
In a number such as 52.25, any numbers shown to the right of the decimal point represents
In what way was reconstruction successful?
Which equations have infinitely many solutions? MORE THAN ONE x-3x=-2x+4 x-1/3(3x)=0 1/3x-3=4+2x 3x+2-1/3(3x)=2+2x x-1/3x+2=0
How and why America has incarcerated so many of its citizens, particularly its African-American citizens
-1/14 - 9/14 Write the answer in simplist form?