NO2+H4➡2 H2O+N What are the elements

What is the name given to the electrons in the highest occupied energy level of an atom? A. valence electrons B. orbital electrons C. cations D. anions

The big bang theory suggests that the universe is how old

Give the atomic symbol for an element that does not exist as a molecule or extended structure. that is, an element that exists only as discrete atoms.

What is the mass of 3.01 X 1023 atoms of iron? (atomic mass of Fe=56)

A block of iron is in a glass of water and both the iron and water are the same temperature, describe the energy transfer between the water and iron

Solid lead IV oxide decomposes into solid lead and oxygen gas.

Ab2 has a molar solubility of 3.72*10-4 m. what is the value of the solubility product constant for ab2? express your answer numerically.

Thermal decomposition of sodium azide (NaN₃) into nitrogen gas and sodium metal is used to inflate car airbags. The reaction proceeds by the following chemical reaction. 2NaN₃ (s) ⟶3N₂ (g) + 2Na (s) How many grams of NaN₃ are need to inflate a 10.

Is salt water acidic, basic or neutral

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