Which requirement is essential for any of the chemical process that occur in cells to take place

A solution was indicated to have a pH value of 3.52. What is the (H+) of this solution?

Carbon-14 has 6 protons and 8 neutrons; which element has 6 protons and 7 neutrons? c-13 si-14 c-6

Which physical method can be used for obtaining a sample of salt from a small beaker of salt water?

Describe the motion of the gas particles.

If the design of jewelry requires 0.490 mole of tin, how many grams of tin are needed?

Which describes the alkalaine solution? A) pH less than 7 B) pH equal to seven C) basic D) acidic

Limestone is primarily a crystal form of caco 3 . How many moles of oxygen are in a 1.25 mol sample of caco 3 ? Only include the numerical value in your answer. Do not include units.

The expression of 5522 km in scientific notation is

Gallium crystallizes in a primitive cubic unit cell. The length of an edge of this cube is 362 pm. What is the radius of a gallium atom?

Amy is holding one end of a jump rope. Her friend Beth is holding the other end of the rope. Amy swiftly moves the handle of the jump rope downward, creating a large wave in the rope. Will Beth feel a tug on the rope at her end?