Answer: Both (a) and (b)
Explanation:
Lipids are heterogeneous group of compounds of biochemical importance. Lipids may be defined as compounds which are relatively insoluble in water and are concentrated of energy source.
Fatty acids are aliphatic carboxylic acids and have the general formula, R-COOH, where COOH is the functional group and R group are hydrocarbon chain.
The structure of fat contains lot of C-C and C-H bonds and there are lot of calories, and therefore energy is packed into thier chemical structure.
Despite fat contains glycerol polar group, the long chains of hydrocarbon which are non polar makes fats insoluble in water.
Answer: 4.32g
Explanation:
MM of H2 = 1 x 2 = 2g/mol
2g of H2 contains 6.02x10^23 atoms.
Therefore Xg of H2 will contain 1.3 x 1024 atoms i.e
Xg of H2 = (2 x 1.3 x 1024) / 6.02x10^23 = 4.32g
Answer:
a chemical change
Explanation:
lighting a match is a chemical change. chemical reactions cause chemical change. in a chemical reaction two or more substances, called the reactants, form different substances called products. hope this helped :)
4 is in the place of Hundredth
<span>Water's polarity causes cohesion that pulls other water molecules up through a plant.</span>
