Answer:Liquids expand for the same reason, but because the bonds between separate molecules are usually less tight they expand more than solids.
Explanation:Heat causes the molecules to move faster, (heat energy is converted to kinetic energy ) which means that the volume of a gas increases more than the volume of a solid or liquid.
1 and 2 are correct
Genes for the trait are present in both genders
Growing a beard in males is a sex limited trait
Explanation
The traits CAN be expressed physically
Anyone can have green eyes regardless of gender
Density = mass / volume so
Density = 156 / 20.0
Density = 7.8 g/mL
The balanced equation is
2 C6H14 (g) + 19 O2 (g) --> 12 CO2 (g) + 14 H2O (g)
<h3><u>Explanation</u>:</h3>
For solving the stoichiometric calculations, we first need to do two steps. One of them is balancing the reaction equation. Here the balancing is done and we can see that 2 moles of hexane reacts with 19 moles of oxygen to produce 12 moles of carbon dioxide and 14 moles of water.
Now, for 2 moles of hexane, number of moles of oxygen required is 19.
So, for 7.2 moles of hexane, number of moles of oxygen required is
.
= 68.4.
So 68.4 moles of oxygen is required.
The answer is D. The final substance in Beaker X is a mixture and in Beaker Y is a pure substance.
The question tells us that the sugar is not visible. This is because it is soluble. The sugar has dissolved into the water, making the two a mixture. The sand, on the other hand, is not dissolved at all. The water and sand are two separate pure substances.
