1. Pour water to the 2.0 mL mark in the graduated cylinder. If you look at the graduated cylinder from the side, you will see the water forms a curve. Make sure the bottom of the curve is at the 2.0 mL
mark
2. Use the gram scale to measure the mass of the graduated cylinder and 2.0 mL of water. Record the
mass in the table. Calculate the mass of 2.0 mL of water by subtracting the mass of the graduated
cylinder
3. Repeat this process to find and record the mass of 4.0 mL of water and then 6.0 mL of water.
4. Density is mass in grams divided by volume in cubic centimeters (cm²). 1 mL is equal to 1 cm.

Which of the following two events occur to create a sea breeze? select all that apply. warm air rises on the ocean and moves toward the land to cool warm air rises on land and moves toward the ocean to cool cool air moves from the ocean to be warmed by the land cool air moves from the land to be warmed by the ocean

Answer asap need to be answered by wednesday morning explain how a buffer works, using an ethanoic acid / sodium ethanoate system including how the system resists changes in ph upon addition of a small amount of base and upon addition of a small amount of acid respectively. include the following calculations in your i. calculate the ph of a solution made by mixing 25cm3 0.1m ch3cooh and 40cm3 0.1m ch3coo-na+. [ka = 1.74 x 10-5 m] ii. calculate the ph following the addition of a 10cm3 portion of 0.08 m naoh to 500cm3 of this buffer solution. iii. calculate the ph following the addition of a 10cm3 portion of 0.08 m hcl to 200cm3 of the original buffer solution.

Athe top of a hill, an athlete on a skateboard has x joules of mechanical energy. how much mechanical energy will she have at the bottom of the hill? ignore the effects of friction.