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Verdich [7]
3 years ago
9

Which element will gain only one electron during a chemical reaction?

Chemistry
1 answer:
pashok25 [27]3 years ago
8 0

Answer:

  1. nitrogen

Explanation:

SANA PO MAKATULONG PO YUNG SAGOT NA BINIGAY KO

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A solution of saline may contain 1.81 mol of sodium chloride (NaCl). How many sodium atoms are present in the solution?
joja [24]

Answer:

1.09 x 10²⁴ atoms Na

Explanation:

In one mole of NaCl, there is also one mole of Na. To convert between moles and atoms, you need to use Avogadro's number. When writing the conversion, the desired unit (atoms) should be placed in the numerator to allow for the cancellation of units (moles). The final answer should have 3 sig figs to match the given number (1.81 mole).

Avogadro's Number:

6.022 x 10²³ atoms = 1 mole

1.81 moles Na           6.022 x 10²³ atoms
---------------------  x  --------------------------------  =  1.09 x 10²⁴ atoms Na
                                       1 mole

5 0
2 years ago
How many valence electrons would atoms of the element boron have?
vagabundo [1.1K]

Answer:

3 valence electrons

Explanation:

Atoms of Boron have 3 valence electrons

8 0
3 years ago
Give one example of an element and one compound.<br><br> Can someone help me with this pls
Mrac [35]

Element: Helium, Oxygen

Compound: H2O, CO2

3 0
3 years ago
What were some reasons why it was a good idea to remove the lid from the separatory funnel after each extraction? Select all tha
masya89 [10]
Liquid will no pour out. At the bottom the separating funnel consists of a valve it allow the liquid to flow out.The lid is on the top to pour in liquid from the top,it is air tight. Therefore as long as the lid is put, the liquid will not flow out at the bottom. The reason is that ,the incoming air has no way to get into the flask.
3 0
3 years ago
the elements iron (Fe), copper (Cu), and mercury (Hg) are classified as metals. which physical property of metals do they all sh
koban [17]

Answer:

They are heavy metals.

Explanation:

Heavy metals are generally defined as metals with relatively high densities, atomic weights, or atomic numbers.

6 0
3 years ago
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