4% starch solution will decrease in volume.
This is because the less starch concentration, the more water molecules exists. Since 4% is less than 10%, so the 4% will contain more water. Water molecules tend to flow from a region of higher water potential to a region of lower water potential through the semi permeable membrane in osmosis. Therefore, since the 4% contains more water, the water there will flow away from the 4% and to the 10% one in order to reach equilibrium.
Answer:
Both are only physical changes.
Explanation:
Nothing about the objects chemically change, and they remain the same.
Their changes arent due to heating/cooling.
First, calculate the molar mass of MgCl2:
Mg: 1 x 24.30 = 24.30
Cl: 2 x 35.45 = 70.9
24.30 + 70.9 = 95.2g/mol
Mole = Mass / Molar Mass
2.70 moles = Mass / 95.2 g/mol
Mass = 2.70 mol x 95.2 g/mol
Mass = 257.04g
Answer:
SbcI3
Explanation:
The symbol of antimony is 'Sb'.
The symbol of chlorine is 'Cl'
First write down the symbol of the first element.
Use the prefix to determine the atoms of first element. If there is no prefix on element then there is only 1 atom.
Now write down the symbol of the second element.
Use the prefix to determine the atoms of second element.
Use prefix as 'mono' for '1', 'di' for '2', 'tri' for '3' and so on.
Answer:
radiant - chemical is the best answer
