How many moles are in 26.4 grams of lithium

3.8moles

Explanation:

The molar mass of Lithium = 7g/mol

Mass conc. of lithium = 26.4g

Number of mole = Mass conc/Molar Mass

Number of mole = 26.4/7 = 3.8moles

they are made of gases.

they have a spherical shape.

they make energy through fusion.

the best answer is d because the strong cohesion is caused by the ability of water molecules to undergo hydrogen bonding.

a is incorrect because when water solidifies, it becomes   ice, which expands and occupies a bigger volume for the same mass of water in its liquid state.

b is incorrect because water has high surface tension. besides bonding to itself it hydrogen bonds to other molecules at the top decreasing possibility for breaking of attractive forces.

c is incorrect because the water molecule has oxygen which is highly electronegative and so pulls the electron pair towards itself creating a dipole moment, making the molecule polar.

e is incorrect because water has strong adhesion, ability to stick to other molecules such as glass because of this molecules having stronger hydrogen bonding than water.