Why do cells have a plasma membrane?

A. to separate protein from the nucleus

B. to distinguish plants from animals

C. to define the size of the cell

D. to separate the inside of the cell from its enviroment

A solution is made by dissolving 54.0 g of silver nitrate in enough water to make 350.0 ml. A 10.00 ml portion of this solution is then diluted to a final volume of 250.0 ml. What is the total concentration of ions present in the final solution?

To which series would the emitted light belong if an electron in a hydrogen atom underwent a transition from level n = 5 to level n = 1?

Stars can be classified into groups based on their a) size b) temperature c) proximity to earth d) proximity to the sun

Identify which property changes as temperature increases to increase the reaction rate. A) Increasing the temperature decreases the molecular motion. B) Increasing the temperature reduces the collision frequency.

Write the aqueous dissolution reaction for the ionic solids below. (Use the lowest possible coefficients. Include states-of-matter under the given conditions in your answer.) (a) Ca (NO3) 2

Becky leaves home and write a distance of 30 KM it took her 2.5 hours what is her speed

Describe the weather associated with a high presurre system

Which of the following is equal to distance/time?

Which of the following should you always wear to avoid being thrown from a vehicle and then crushed if it tips over?

If the titrant has a molarity of 0.1000 m and there are 45.00 ml of analyte present, what is the molarity of the analyte?