Is the Zeff of an element always equal to the number of valence electrons?

A gas occupies 1.56 L at 1.00 atm. what will the volume be if the pressure becomes 3.00 atm

He wanted to measure the temperature in his freezer so he left the thermometer in the freezer overnoght. the next morning he found that the glass bulb og his thermometer has broken. why?

The suns mass is very small compared to earth true or false

Describe at least two differences between ionic and covalent bonds.

Why do different substances have different Odors?

What concentration of so32 - is in equilibrium with ag2so3 (s) and 9.50 * 10-3 m ag? the ksp of ag2so3 can be found here?

Groups or families in the periodic table have what in common

Why is the isotope mass multiplied by the isotopes percent abundance?

Rank the following substances in order from most soluble in water to least soluble in water: ethane, C2H6; 2-butanol, C4H9OH; potassium chloride, KCl; and propane, C3H8.

What information can be learned about the element chlorine (Cl) by looking at the periodic table? Select all that apply. chlorine has 35.45 protons chlorine has 35.45 neutrons chlorine has 17 protons chlorine has 17 electrons