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8 months ago

11

Why does lithium form a 1 ion?.

1 answer:

Alik [6]8 months ago

5 0

When the electrons are filled in the electron shells in lithium it's 2,1 it forms a +1 charge because it needs to loose one electron inorder to gain stable elctronic configuration

<h3>What is lithium ?</h3>

Chemical element lithium has the symbol Li and atomic number 3. A soft, silvery-white alkali metal, it is. It is the least dense solid element and the least dense metal under typical conditions.

3 protons and 3 electrons make up an atom of lithium. It is capable of losing an electron, turning it into an ion. Now that it has more positive protons than negative ones, it is positively charged overall. Consequently, it is a positive ion.

Compared to most of the other Periodic Table elements, lithium has a larger atomic radius. Lithium has a positive charge when in compounds.

Learn more about Lithium here:

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C= 51.89% H= 9.82% Br=38.29%

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Answer:

a

Explanation:

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2 years ago

Which of the following is one way that nuclear reactions differ from chemical<br> reactions?

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Nuclear reaction takes place at the nucleus whereas chemical reaction involves valence electrons

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3 years ago

A sample of ammonia ^NH3h gas is completely decomposed to nitrogen and hydrogen gases over heated iron wool. If the total pressu

icang [17]

Answer : The partial pressure of $N_2$ and $H_2$ is, 216.5 mmHg and 649.5 mmHg

Explanation :

According to the Dalton's Law, the partial pressure exerted by component 'i' in a gas mixture is equal to the product of the mole fraction of the component and the total pressure.

Formula used :

$p_i=X_i\times p_T$

$X_i=\frac{n_i}{n_T}$

So,

$p_i=\frac{n_i}{n_T}\times p_T$

where,

$p_i$ = partial pressure of gas

$X_i$ = mole fraction of gas

$p_T$ = total pressure of gas

$n_i$ = moles of gas

$n_T$ = total moles of gas

The balanced decomposition of ammonia reaction will be:

$2NH_3\rightarrow N_2+3H_2$

Now we have to determine the partial pressure of $N_2$ and $H_2$

$p_{N_2}=\frac{n_{N_2}}{n_T}\times p_T$

Given:

$n_{N_2}=1\\\\n_{H_2}=3\\\\n_{T}=4\\\\p_T=866mmHg$

$p_{N_2}=\frac{1}{4}\times (866mmHg)=216.5mmHg$

and,

$p_{H_2}=\frac{n_{H_2}}{n_T}\times p_T$

Given:

$n_{H_2}=1\\\\n_{H_2}=3\\\\n_{T}=4\\\\p_T=866mmHg$

$p_{H_2}=\frac{3}{4}\times (866mmHg)=649.5mmHg$

Thus, the partial pressure of $N_2$ and $H_2$ is, 216.5 mmHg and 649.5 mmHg

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3 years ago

WHOEVER ANSWERS GETS BRAINLIEST!! (im not lying its facts)

storchak [24]

Answer:

The answer to your question is D. 25 grams.

4 0

2 years ago

Read 2 more answers

An aqueous solution of calcium hydroxide is standardized by titration with a 0.120 M solution of hydrobromic acid. If 16.5 mL of

Artist 52 [7]

<u>Answer:</u> The molarity of calcium hydroxide in the solution is 0.1 M

<u>Explanation:</u>

To calculate the concentration of base, we use the equation given by neutralization reaction:

$n_1M_1V_1=n_2M_2V_2$

where,

$n_1,M_1\text{ and }V_1$ are the n-factor, molarity and volume of acid which is $HBr$

$n_2,M_2\text{ and }V_2$ are the n-factor, molarity and volume of base which is $Ca(OH)_2$

We are given:

$n_1=1\\M_1=0.120M\\V_1=27.5mL\\n_2=2\\M_2=?M\\V_2=16.5mL$

Putting values in above equation, we get:

$1\times 0.120\times 27.5=2\times M_2\times 16.5\\\\M_2=0.1M$

Hence, the molarity of $Ca(OH)_2$ in the solution is 0.1 M.

7 0

2 years ago