which cell structure contains the cell’s genetic material, controls the cell’s activities, and is sometimes referred to as the cell’s brain?

a cytoplasm

b cell envelope

c organelle

d nucleus

When an object falls through the air and encounters air resistance its overall speed will be than if it had not encountered air resistance? (one word answer)

When balancing a chemical equation:

Abeaker with 2.00×102 ml of an acetic acid buffer with a ph of 5.000 is sitting on a benchtop. the total molarity of acid and conjugate base in this buffer is 0.100 m. a student adds 4.70 ml of a 0.360 m hcl solution to the beaker. how much will the ph change? the pka of acetic acid is 4.740.