How come some metals loose their shine but gold doesn't

Culture will impact your observations and assessments because it influences A. a child's experiences, behaviors, and values. B. a child's ability to meet developmental milestones. C. the way you connect with the family. D.

The reaction for the combustion of octane (C8H18) is given in this reaction: 2C8H18 + 25O2 → 16CO2 + 18H2O How many grams of H2O are produced if 228 grams of octane are burned? 181 grams 228 grams 81 grams 324 grams

Why is milk considered a colloid?

How many molar mass are in BeCl2?

How many atoms of sulfur are in 1.00 mol of iron (II) sulfate

5. Identify a suitable method that would be used to separate mixture of the follow [b]Water and ethanol c]Table salt dissolved in water d] iodine and potassium Pul the table below

How much energy is needed to convert 57.3 grams of ice at 0.00°c to water at 75.0°c? specific heat (ice) = 2.10 j/g°c specific heat (water) = 4.18 j/g°c heat of fusion = 333 j/g heat of vaporization = 2258 j/g?

A certain first-order reaction (A→productsA→products) has a rate constant of 9.90*10-3 s-1s-1 at 45 ∘C∘C. How many minutes does it take for the concentration of the reactant, [A][A], to drop to 6.

Assign the oxidation number for (NH4) 3PO4

When gold is melted and formed in a mold to make a piece of jewelry, what type of change is taking place?