Indentify two advantages in daylight saving time

What would most likely be the transmittance of a 0.70 m solution of solute a?

7. what temperature is need to just dissolve 50 g of nh4cl in 75 g of water? '

He table below gives the atomic mass and relative abundance values for the three isotopes of element m. relative abundance (%) atomic mass (amu) 78.99 23.9850 10.00 24.9858 11.01 25.9826 what is the average atomic mass (in amu) of element m? 2.86 5.36 24.30 24.98