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the total number of ions present in 1ml of 0.1M barium nitrate solution is ???????????




6 years ago
Answers : (2)
Hello

Molarity = moles/litre

0.1 = X . 1000/1 ( converted into ml)

X = 10-4 moles or 0.0001 moles

and we know that Ba(NO3)2 dissociates into Ba2+ + 2NO3-

the total no of ions = 3 in one mole

so in 10-4 moles =

3 . 10-4 . 6.023.1023

solve it and you will get the ansLaughing

hope i helped..!

Answer 1

Answer:

The solid-vapor curve, labeled AB in Figure 2, indicates the temperatures and pressures at which ice and water vapor are in equilibrium. These temperature-pressure data pairs correspond to the sublimation, or deposition, points for water. If we could zoom in on the solid-gas line in Figure 2, we would see that ice has a vapor pressure of about 0.20 kPa at −10 °C. Thus, if we place a frozen sample in a vacuum with a pressure less than 0.20 kPa, ice will sublime. This is the basis for the “freeze-drying” process often used to preserve foods, such as the ice cream shown in Figure 3.

Explanation: