Nonpolar and hydrophobic
Phospholipid molecules have a polar and hydrophillic head, which consists of glycerol and phosphate ions. In a plasma membrane, this head points towards the hydrophillic environment outside of the cell. The tails, on the other hand, are hydrophobic and nonpolar, which means they do not allow water to pass through them.<span />
Answer:
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Explanation:
i need a crown
Explanation:
1). The given data is as follows.
, 
C = 5.73 
Hence, calculate the change in enthalpy of the reaction as follows.
=
= -70.25 KJ
As, number of moles =
=
= 0.018 mol
Therefore, enthalpy of reaction in kJ/mol hexane is as follows.
=
kJ/mol
Thus, we can conclude that
for the reaction in kJ/mol hexane is
kJ/mol
.
2). As we know that,
Number of moles =
=
= 0.017 mol
=
= -65.875 kJ
As, 
-65.875 kJ =
C = 4.56 
Hence, heat capacity of the bomb calorimeter is 4.56
.
Rare earth metals are a group of 17 elements - lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, scandium, yttrium - that appear in low concentrations in the ground
Answer:

Explanation:
Percent yield is the ratio of the amount actually produced to how much could theoretically be produced. It is found using this formula:

For this reaction, the theoretical or expected yield is 325.0 grams. The actual yield is 123.8 grams.

Divide.


Round to the nearest hundredth. The 9 in the hundredth place tells us to round the 0 to a 1 .

The percent yield is about <u>38.1%</u>