What is the mass number of an atom that contains 19 protons, 19 electrons, and 20 neutrons?

How are minerals formed?

The state of matter that has no definite shape OR volume is

If the room temperature is often expressed at 300K. What is the temperature in Celsius?

The original concentration in a sample is 5.1 x 10^9 cfu/ml. which sample volume should yield a countable plate

If you build an atom using two protons two neutrons and two electrons you have built an atom of

An ice cube is placed on a kitchen counter. Which best describes heat flow in this situation

When water is placed in a thin glass tube, it tends to climb up the walls of the tube. This effect is known as capillary action. What causes this capillary action? A. metallic bonding B. covalent bonding C. ionic bonding D. hydrogen bonding

Earth rotates once every 24 hours. What does this mean? A. Earth makes one full trip around the Moon every 24 hours. B. Earth completes a full spin on its axis once every 24 hours. C. Earth makes one full trip around the Sun every 24 hours. D.

Compare and contrast the outer core and the inner core.

What colors make the color turquoise?