What is the mass number of an atom which contains 28 protons, 28 electrons and 34 neutrons?

Indicate whether each source is reliable or unreliable a goverment website a university professor's personal blog a commercial website an online peer-reviewed science journal

The smallest unit of a substance that behaves like the substance is

An amount of carbon-12 atoms equal to Avogadro's number would have a mass of exactly

Bond energy what makes a reaction endothermic or exothermic worksheet answers

Many of the stars we see in the night sky are called blue giants. They put out more energy and burn millions of times brighter than the Sun. Why does the Sun appear much larger and brighter from Earth than blue giant stars?

What is the formula for hemoglobin?

Select the ion. Cu PO4-3 SO2

What is the issue related to the Native American southern boundaries of the United States? A. Northwest Ordinance of 1787 B. Pinckney Treaty C. Monroe Doctrine D. Missouri compromise

How would you describe the motion of the particles that make up a rock?

What is H20 and oxygen