Answer: The partial pressure of oxygen in the mixture is 321 mm Hg
Explanation:
According to Dalton's law, the total pressure is the sum of individual pressures.
Given : 
= total pressure of gases = 752 mm Hg
= partial pressure of Helium = 234 mm Hg
= partial pressure of nitrogen = 197 mm Hg
= partial pressure of oxygen = ?
Putting in the values we get:
The partial pressure of oxygen in the mixture is 321 mm Hg
The correct answer is:
B; A new substance forms.
Explanation:
A physical change, such as a state change or dissolving, does not produce a new substance, but an abundant change does. In a chemical reaction, the atoms and molecules that connect with each other are described as reactants. Chemical reactions happen when chemical bonds are broken and formed. If the molecules in a substance crash into each other with enough energy, some of the bonds in the molecules can break. The atoms can make new bonds with different atoms. A new substance forms.
A because if it remains through the whole expídeme y the same the it doesn’t depend on anything else to change it and I got it correct
Answer:
Option C= A hydrogen bond formed between a polar side chain and a hydrophobic side chain.
Explanation:
All three given options a, b and d have common mechanism to accommodate the polar amino acid.
A= A hydrogen bond forms between two polar side chains.
B= A hydrogen bond from between a polar side chain and protein back bone.
D = hydrogen bond form between polar side chains and a buried water molecules.
All these are use to accommodate the polar amino acid.
While option C is not used. which is:
A hydrogen bond formed between a polar side chain and a hydrophobic side chain.
