20104285 20104285

18-10-2022
Chemistry

contestada

One atom has 20 protons and a mass of 44. Another atom has 20 protons and a mass number of 40. What is the identity of these atoms? How do you account for the difference in mass numbers?

Respuesta :

Otras preguntas

Bony Fish (bass etc.) and marine mammals (like dolphins) evolved some similar adaptations for survival in aquatic environments. However, they evolved separately

Write this rate as a unit rate. Use pencil and paper. Describe a situation that would use this unit rate.

Which arithmetic sequence has a first term equal to 47 and a common difference of -18? a.{-18, -65, -112, -159, …} b.{47, 29, 11, -7, …} c.{-18, 29, 76, 123, …}

There are 15 doughnuts. Antoine eats a third of the doughnuts. How much did he eat? How many doughnuts are left?

In which of the follwing media sound travels fast ? A . oxygen B . copper C . sea water D . steel

Pvrrr me ajudem É pra hjj

The diagram shows a man using a lever to move a rock. Which change can he make to the fulcrum to decrease the force he has to apply? A- Remove the fulcrum B- Pu

Analyse the impact that the increasing number of social grantsmay have on Teen mothers

A 0.5 kg toy car has 18 joules of kinetic energy. Calculate its speed.

Kepler's laws and explanations