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wel
3 years ago
11

Can you please answer Question 9 please

Chemistry
1 answer:
MissTica3 years ago
6 0
The answer is C because I kno
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2Li + H2SO4=Li2SO4 + H2 How many liters of hydrogen gas, H2 at STP can be produced from 3.0 moles of Li? The molar volume of a g
Gemiola [76]

Answer:

volume of H_2=33.6 litre

Explanation:

Firstly balance the given chemical equation,

2Li + H_2SO_4=Li_2SO_4 + H_2

From the given balance equation it is clearly that,

2 mole of Li gives  1 mole of H2 gas

2 mole Li⇔1 mole H_2

1 mole Li⇔0.5 mole H_2

3 mole Li⇔1.5 mole H_2

hence

3 mole of Li will give 1.5 mole H2 gas

therefore volume of gas produced from 3 mole Li at STP = 1.5\times22.4 \frac{L}{mol}

volume of H2=33.6 litre

7 0
3 years ago
Which of the characteristics below best describes organic compounds
aleksandr82 [10.1K]

what are the options

4 0
3 years ago
Why might it be important to follow the chain of custody when handling evidence?
Ierofanga [76]

Answer:

To keep a record of who has the evidence and when

Explanation:

Don't want anyone tampering with it, hope this helps!!!

5 0
2 years ago
1. An acid will have the suffix “–ic acid” at the end of its name when the negative
Nimfa-mama [501]
  • An acid will have the suffix “–ic acid” at the end of its name when the negative ion has a suffix -ide.
  • An acid will have the suffix “–ous acid” at the end of its name when the negative ion has a suffix -ite.

<h3>What is an Acid?</h3>

This is defined as a chemical substance which can react with a base to form a salt in a reaction.

The appropriate acid suffixes and conditions is however correctly given above.

Read more about Acid here brainly.com/question/2183107

4 0
2 years ago
Rank the following atoms in order of decreasing first ionization energies (i.e., highest to lowest): Li, Be, Ba, F.
Minchanka [31]

Answer:

The order is:

F >Be >Li >Ba

Explanation:

Electrons are held in atoms by their  attraction to the nucleus which means that to remove an electron from the atom energy is needed.

The ionization energy is the minimum energy necessary to remove an electron from an atom in the gas phase and ground state, the electron removed being the outermost, that is, the furthest from the nucleus. The further away the electron is from the nucleus, the easier it is to remove it, that is, the less energy is needed.

By increasing the atomic number of the elements of the same group, the nuclear attraction on the outermost electron decreases, since the atomic radius increases. Then the ionization energy decreases. In other words, in a group it decreases from top to bottom because the size of the atom increases and it is easier to remove an external electron.

By increasing the atomic number of the elements of the same period, the nuclear attraction on the outermost electron increases, since the atomic radius decreases. Therefore, in a period, as the atomic number increases, the ionization energy increases. In summary, in a period it increases from left to right as the effective nuclear charge increases and it increases thanks to the decrease in the size of the atom.

Taking these considerations into account, the order is:

<u><em>F >Be >Li >Ba</em></u>

5 0
2 years ago
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