According to the periodic table, how many electrons does gallium (#31) have in its valence level?

3

13

31

2

How do the results of the iodine test indicate that hydrolysis of starch occurred

What kind of stars make up the galactic nucleus?

Which of these definitions could be used to define H2O as an acid? Check all that apply. Arrhenius concept Bronsted-Lowry concept Lewis concept

How many valence-shell electrons are there in no? express your answer as an integer?

Ow well can you apply Charles's law to this sample of gas that experiences changes in pressure and volume? Assume that pressure and number of moles of gas are constant in this problem.

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?