Hidorocacbon A có 5 khối lượng C=5.25% khối lượng của H. Công thức đơn giản nhất của A

Amass of 100.0 g of solute is dissolved in water so that 850. ml of a 0.7500 m solution has been prepared. what is the molar mass of the solute?

Why is the vapor pressure of a warm lake higher than the vapor pressure of a cold lake? o a. warm water has a greater heat of vaporization. ob. warm water evaporates more quickly. cool water evaporates more quickly. od. cool water has a greater heat of vaporization.

If two atoms are bonded to a central atom with no lone pairs,how will they be arranged