Why aren't descriptive investigations repeatable?

The element silver has an atomic weight of 108 and consists of two stable isotopes silver-107 and silver-109. The isotope silver-107 has a mass of 107 amu and a percent natural abundance of 51.8 %.

What is the rule of thumb for the activity trends of metals and nonmetals? Explain and give examples.

How many moles of aluminum is needed to react with 6.34 moles of Fe 3 O 4 in the reaction below? 8 Al + 3 Fe3O4 - -> 4 Al2O3 + 9 Fe Input your answer without units.

Two sources of copper are cuprite, which has the IUPAC name copper (I) oxide, and malachite, which has the formula Cu2CO3 (OH) 2. Copper is used in home wiring and electric motors because it has good electrical conductivity.

Which of the following best defines conduction? A. the movement of energy by waves that travel through space B. the movement of a hot liquid of gas from one place to another, carrying energy with it C.

A mixture consists of sand and an aqueous salt solution. Which procedure can be used to separate the sand, salt, and water from each other? (1) Evaporate the water, then filter out the salt. (2) Evaporate the water, then filter out the sand.

Identify the components of a fuel cell. zinc-manganese hydrogen-oxygen nickel-metal hydride lithium ion nickel-cadmium

For the reaction hconh2 (g) ânh3 (g) + co (g), k = 4.84 at 400 k what can be said about this reaction at this temperature?

What would be the effect on the nucleus of an atom if it emitted one alpha particle and one gamma ray

What is the formula for lead (IV) sulfide