The number of which subatomic particle changes to create an isotope?

A boy is pulling a rope with a force of 300 N his friend is pulling on the rope in the opposite direction with a force of 180 N what is the net force acting on the rope

Question 1 of 23 The diagram below shows two mugs of coffee mug A and mug B). Both mugs have the same temperature, but mug A contains 30 ml, while mug B contains 5 thermal energy in both mugs? B 30°C 30°C .

What is the relationship between the values of wavelength, frequency, and energy of electromagnetic waves

Alisha wanted to know how positive

The molar mass of glucose is 180.2 g/mol. How many grams of glucose will be produced when 132.0 g of CO2 reacts with an excess of water?

How many moles of h2so4 are required to react with 6.80 miles of al2o3

Which explanation best describes a wave? A. a disturbance that travels through a medium with a transfer of energy and matter B. a disturbance that travels through a medium without a transfer of energy and matter C.

The requirements for one type of atom to substitute for another in a solid solution are:

How could you separate items that are different densities? explain

Why do elements within a period of the periodic table have different properties