An element has an atomic number of 29. The number of protons and electrons in a neutral atom of the element are *

Chemistry

1 answer:

nasty-shy [4]3 years ago

8 0

The number of protons and electrons in a neutral atom of the element are;

D. 29 protons and 29 electrons

The atomic number of an element is equal to the number of protons in the nucleus of each atom of that element.

Thus copper has an atomic number of 29, all atoms of copper will have 29 protons.

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Please, see attached two figures:

The first figure shows the solutility curves for several soluts in water, which is needed to answer the question.

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The red arrow on the second attachement shows how you must go vertically from the temperature of 60ºC on the horizontal axis, up to intersecting curve for the solubility of NH₄Cl.

From there, you must move horizontally to the left (green arrow) to reach the vertical axis and read the solubility: the reading is about in the middle of the marks for 50 and 60 grams of solute per 100 grams of water: that is 55 grams of grams of solute per 100 grams of water.

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