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Lyrx [107]
3 years ago
9

What is aluminum’s nuclear charge?

Chemistry
2 answers:
natita [175]3 years ago
5 0

Answer:All six of the ions contain 10 electrons in the 1s, 2s, and 2p orbitals, but the nuclear charge varies from +7 (N) to +13 (Al)

Explanation:

hope this helped if it did may i have brainliest

liubo4ka [24]3 years ago
5 0
What they said^^^^^^^
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Consider the reaction of magnesium metal with hydrochloric acid to produce magnesium chloride and hydrogen gas. If 3.29 mol of m
gregori [183]

Answer:

1.645 moles of excess reactant that is of magnesium metal are left over.

Explanation:

Moles of magnesium metal = 3.29 mol

Moles of HCl = 3.29 mol

Mg(s)+2HCl(aq)\rightarrow MgCl_2(aq)+H_2(g)

According to recation, 2 moles of HCl reacts with 1 mol of magnesium metal, then 3.29 moles of HCl will react with :

\frac{1}{2}\times 3.29 mol=1.645 mol of magnesium metal

Moles of HCl left = 3.29mol - 3.29 mol = 0

Moles of magnesium metal left = 3.29 mol - 1.645 mol = 1.645 mol

1.645 moles of excess reactant that is of magnesium metal are left over.

7 0
3 years ago
How many molecules are there in 5H20?
Svetach [21]

Answer:

The number before any molecular formula applies to the entire formula. So here you have five molecules of water with two hydrogen atoms and one oxygen atom per molecule. Thus you have ten hydrogen atoms and five oxygen atoms in total.

3 0
3 years ago
Read 2 more answers
Hello people ~
Nonamiya [84]

Answer:

Amphiprotic

Explanation:

  • These chemicals are too independent
  • They can either donate or accept a lone pair of protons .
  • So they can act as base and acid
4 0
2 years ago
Substance that hasten chemical reaction time without themselves undergoing change are called
pantera1 [17]
The substance is a catalyst
4 0
3 years ago
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How many oxygen atoms are in 25 g of oxygen?
shutvik [7]

Answer:

Explanation:

Carbon Dioxide-CO2

To get molecules, we must convert grams to moles and moles to atoms using Avogadro's number.

Molar mass of CO2=

C:12.0g+O:16.0gx2=44.0g CO2

25.0g CO2 | 1 mol CO2 | 6.02x10 23 molecules CO2

= 3.42x10 23 molecules CO2

1 | 44.0g CO2 | 1 mol CO2

Now to get the number of oxygen atoms.

Since there are 3 atoms in CO2 and 2 of them are oxygen, we will divide by 3 (1.14x10 23) and multiply by 2 (2.28 x10 23)

So the number of oxygen atoms in 25.0 grams of CO2 is 2.28x10 23 or 228 000 000 000 000 000 000 000

8 0
2 years ago
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