74. Is the charge of a nucleus positive, negative, or zero?

The charge of an atom?

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Which describes John Dalton's observations of elements in any given compound? Their masses are always equal. Each element always contributes the same number of atoms. Atoms of different elements always combine in the same way.

Gabe amodeo, a nuclear physicist, needs 8080 liters of a 3030 % acid solution. he currently has a 20 %20% solution and a 60 %60% solution. how many liters of each does he need to make the needed 8080 liters of 3030 % acid solution?

Malia was able to make a paperclip float on the surface of water. What will most likely happen to the paperclip if a drop of dishwashing detergent is added near it?

A gas sample at 40.0*C occupies a volume of 2.32 L. If the temperature is raised to 75*C, what will the volume be, assuming the pressure remains constant?

I got a question. What could be the oxidation numbers for each atom that makes up the compound MgBr2?

A student mixes 0.50 L of 0.0020 M Ba (NO3) 2 solution with 0.50 L of 0.0080 M Na2SO4 solution. Which equation shows the proper set-up to calculate molar concentration of Ba2 + ions in the new solution? (0.0020 M) (1 L) = (? M) (0.0020 M) (0.

What is the minimum number of carbon atoms a ketone may contain

The gas-phase decomposition of NOBr has a k = 0.810 M-1 s-1 at 10°C. NOBr (g) → NO (g) + ½ Br2 (g) rate = k[NOBr]2 We start with 0.00200 M NOBr in a flask at 10°C. (a) How many minutes does it take to use up 0.

What new scientific evidence led to changes in Dalton's atomic theory?

What other property do metal share