A buffer consists of undissociated acid (HA) and the ion made by dissociating the acid (A-). How does this system buffer a solution against decreases in pH?

A buffer consists of undissociated acid (HA) and the ion made by dissociating the acid (A-). How does this system buffer a solution against decreases in pH? The Correct Answer is #NAME? Reason Explained #NAME? is correct for A buffer consists of undissociated acid (HA) and the ion made by dissociating the acid (A-). How … Read more

Which answer helps to explain why all living cells need pH buffers?

Which answer helps to explain why all living cells need pH buffers? The Correct Answer is Amino acid side chains have many carboxyl and amino groups. Reason Explained Amino acid side chains have many carboxyl and amino groups. is correct for Which answer helps to explain why all living cells need pH buffers?

Many of water’s emergent properties, such as its cohesion, its high specific heat, and its high heat of vaporization, result from the fact that water molecules _____.

Many of water’s emergent properties, such as its cohesion, its high specific heat, and its high heat of vaporization, result from the fact that water molecules _____. The Correct Answer is are attracted to each other by partial negative and positive charges on the oxygen and hydrogen atoms, respectively Reason Explained are attracted to each … Read more

If the molecular mass of a carbon atom is 12, the mass of a hydrogen atom is 1, and the mass of an oxygen atom is 16 daltons, how many molecules does one mole of table sugar (sucrose; C12H22O11) contain?

If the molecular mass of a carbon atom is 12, the mass of a hydrogen atom is 1, and the mass of an oxygen atom is 16 daltons, how many molecules does one mole of table sugar (sucrose; C12H22O11) contain? The Correct Answer is 6.02 x 10^23 Reason Explained 6.02 x 10^23 is correct for … Read more

Because organisms are made primarily of water, they resist rapid temperature changes. This useful quality is based on water’s _____.

Because organisms are made primarily of water, they resist rapid temperature changes. This useful quality is based on water’s _____. The Correct Answer is high specific heat Reason Explained high specific heat is correct for Because organisms are made primarily of water, they resist rapid temperature changes. This useful quality is based on water’s _____.