What does a cell use to eliminate a substance that is too large to leave by diffusion

Assume the atomic mass of element X is 22.99 amu. A 17.15-g sample of X combines with 14.17 g of another element Y to form a compound XY. Calculate the atomic mass of Y.

Use the drop-down menus to choose the type of investigation that best completes each statement. investigations show relationships that do not always indicate cause-and-effect relationships.

What is pH? A) the concentration of potassium ions in a solution B) how basic a solution is C) how acidic a solution is D) the concentration of hydrogen ions in a solution

What shape would you expect for XeF4? View Available Hint (s) What shape would you expect for? linear bent trigonal planar T-shaped trigonal pyramidal tetrahedral seesaw square planar square pyramidal trigonal bipyramidal octahedral

To what volume should you dilute 51 ml of a 13 m stock hno3 solution to obtain a 0.126 m hno3 solution?

Atoms or groups of atoms with a negative charge

What is true when two reactants combine in an exothermic reaction?

William Tell had only one son and had to shoot an apple from the top of his son's head with his bow and arrow. If you were William Tell and you loved your son, would you rather be accurate or precise?

Sugar burns when heated on a skillet physical or chemical change

What other means of qualitative analysis are used to identify metals