Question 12 The diagram shows what happens when a blue soluble crystal is placed in a beaker of
water.
Water
After several hours
Blue
solution
Blue
crystal
Which row correctly describes the processes taking place?
Chemical process
Dissolving
Diffusion
A
✓
B
Х
Х
с
✓
Х
D
X Х
(1 mark]

At a temperature of 393 k, the temperature of a sample of nitrogen is 1.07 atm what will the pressure be at a temperature of 478 k

Fill in the coefficients that will balance the following reaction: a0cr2(so4)3 + a1agno3 -> a2cr(no3)3 + a3ag2so4

There are 6.022, 104 atoms of hg in 1 mole of hg the number of atoms in 45 moles of hg can be found by multiplying 4.5 by 6.022, 102 which is the number of atoms in 4.5 moles of hg, correctly written in scientific notation with the correct number of significant figures? 0 21,109 0 21,100 271, 1024 27.099, 100 mark this and retum save and exit submit