What 2 particles account for almost all if the mass of an atom

Four type of molecular models

Compared to an enzyme with a Km of 10-6 mM, an enzyme having a Km of 10-8 mM A. would have 100 times more product formed per min B. would be described as having binding more tightly to the substrate C.

An atom has a mass number of 27 and 14 neutrons. what is the atomic number of this atom?

Which of the following would a chemist be most likely to study? a leaf floating on water a leaf changing color in autumn a leaf being blown by the wind a leaf being eaten by insects

A bathroom scale is most likely measuring in milligrams into grams grams or kilograms

What subatomic particles do the following symbols represent in the atomic diagrams

2. You have 2 m3 of a mineral ore sample. It has a mass of 1 * 104 kg. Calculate the density of the ore sample and express your results in g/cm3 with appropriate scientific notation.

A sample of hydrogen was collected by water displacement at 23.0°C and an atmospheric pressure of 735 mmHg. Its volume is 568 mL.

What is loamy soil?

What is the lowest possible value of n for a d atomic orbital?