An atom has 27 protons and 22 neutrons. What is the chemical symbol for the atom?

Consult the periodic table.

O Co

О Cs

O Cr

O Ca

Failure to maintain homeostasis results in

How many moles of O2 are counsumed if 20 moles of SO2 are Produce

Which option correctly explains electrical conductivity of metals? Metals are poor conductors of electricity because the inner electrons in metallic crystals are not free to move.

What focuses on the compositon of matter

The distance from the top of one sound wave to the top of the next sound wave is called a (n)

What does pH measure? number of hydrogen atoms in an acid number of hydroxide atoms in a base concentration of hydrogen ions in solution concentration of hydroxide ions in solution

Based on charles's law, which of the following statements is true for an ideal has at a constant pressure and mole amount? A. The number of collisions is independent of volume B. The number of collisions decreases with increase in volume C.

50. mL of water is initially 70. k and cooled to 25. k. What is the thermal energy?

Which of the following statements is true about both nuclear fusion and nuclear fission? They occur in the sun. Heavy atoms are split. Two light nuclei combine. Some mass changes into energy.

What does the name iron (II) in a compound indicate about the cation? A an 11 + charge B a 2 - charge C a 2 + charge