A certain atom of helium has 2 protons and 3 neutrons in its nucleus. It has 2 electrons in its electron cloud. What is the atomic mass of this atom?

Select the correct answer. Which statement is true? A. Opinions can be scientifically tested. B. Scientific theories are absolute and cannot be changed. C. Scientists have learned all they'll ever know about science. D.

Why are scientist most likely working on developing cleaner-burning fuel for cars? A) to increase fuel consumption B) to increase fuel production C) to reduce noise pollution D) to reduce air pollution

What would happen if mitosis was uncontrolled in the cells of a person's skin.?

When a plant forms glucose molecules, where do the carbon atoms come from?

what kind of medical assistance will the affected child with duchenne muscular dystrophy need? Will further assistance be needed, as the child grows older?

What can a hypothesis become if it is supported by repeated experimentation? a. a scientific theory b. an experimental group c. a scientific method d. a peer review

A client presenting to the emergency department with chest pain and dizziness is found to be having a myocardial infarction and subsequently suffers cardiac arrest. the healthcare team is able to successfully resuscitate the client.

Which part of a fungus releases digestive chemicals and then absorbs pieces of food? nuclei flagella hyphae spores

Put these processes of the water cycle in the correct order, starting from the moment the sun transfers it's energy

Ozone hole refers to ... ? A. hole in ozone layer B. decrease in the ozone layer in troposphere C. decrease in thickness of ozone layer in stratosphere D. increase in the thickness of ozone layer in troposphere