Why do some compound have 1 hydrogen, some have 2 hydrogens, and some have 3 hydrogens?

Gloria is writing the chemical formula for a compound using its chemical name. She has just identified the names of the elements in the compound. What tool will she use next?

Consider the group 1A elements sodium (period 3), potassium (period 4), and rubidium (period 5). What would you predict about the ionization energies of these elements?

Shane, who lives in Perth, Australia, has never seen a white Christmas. In fact, December is one of the hottest months in Australia. Why is it that Australia has such warm weather at this time of year?

How many grams of water would there be in 100.0g of hydrate? How many moles? Mass of the hydrate 0.946g Mass of the anhydrous CuSO4 0.614gCuSO4 Mass of water driven off? 0.347g H2O The percent water in the hydrate 36.0%

Why does the presence of lone pairs contribute to the polarity of a water molecule

What effect does nuclear radiation have on atoms? It splits atoms. It burns atoms. It ionizes atoms.

The density of an aqueous solution of nitric acid is 1.36 g/ml and the concentration is 2.48 m. what is the concentration of this solution in percent by mass?

In a crystal lattice of an ionic compound, A. Kind of a given charge are clustered together B. Ions are surrounded by ions of the opposite charge C. A sea of electrons surrounds the ions D. Neutral molecules are present

Discuss why two objects of made of the same type of matter at the same starting temperature with different masses increase in temperature at different rates when the same amount of thermal energy is transferred to each object.

An isotope contains 56 protons, 54 electrons, and 74 neutrons. What is the identity of the isotope?