Jamal wants to make a model of a hill near his house to test the way the slope affects how rain runs down the hill. Which type of model would be best for what he needs?

Give two reasons why the flame test is sometimes invalid

Which formula represents an alkane? * C6H10 C6H12 C6H14 C6H16

Potassium chlorate (kclo3) decomposes in a reaction described by this chemical equation:2kclo3 (s) → 2kcl (s) + 3o2 (g) if 36.0 grams of potassium chlorate enter into this reaction, what is the total mass of the two products?

When researchers cool a gas, which of the following has occurred? Select all that apply. Velocity and spacing of particles is reduced Volume of substance decreases relative to temperature decrease Cooling stops once absolute zero (-273K) is reached

The strong nuclear force holds together which two particles in an atom? Electrons and neutrons Protons and electrons Neutrons and protons Neutrons and beta particles

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?