consider the following atoms and ion: Cl,Mg,P,K,Ce =
A)which one is an example of ns² family?
B)which one is an example of p-block element?
C) which is (are) isoelectronic with Argon?
D) Which one is an example of alkaline earth metal?
E) which one has core configuration [Ne]3s²?
F) which one is an example of f-block element?
G) which one is d-block element?
H) which one has outer shell configuration of ns²p³?
​

Answer: 1. A, 2.B, 3. D, 4. B, 5. C

Explanation:

i have P.E. too lol have a great day!

Hydrogen + Oxygen → Water.

Answer:

19.4 mL Ba(OH)2

Explanation:

H2(g) + Cl2(g) --> 2HCl(aq) (make sure this equation is balanced first)

At STP, 1 mol gas = 22.4 L gas. Use this conversion factor to convert the 100. mL of Cl2 to moles.

0.100 L Cl2 • (1 mol / 22.4 L) = 0.00446 mol Cl2

Use the mole ratio of 2 mol HCl for every 1 mol Cl2 to find moles of HCl produced.

0.00446 mol Cl2 • (2 mol HCl / 1 mol Cl2) = 0.00892 mol HCl

HCl is a strong acid and Ba(OH)2 is a strong base so both will completely ionize to release H+ and OH- respectively. You need 0.00892 mol OH- to neutralize all of the HCl. Note that one mole of Ba(OH)2 contains 2 moles of OH-.

0.00892 mol OH- • (1 mol Ba(OH)2 / 2 mol OH-) • (1 L Ba(OH)2 / 0.230 M Ba(OH)2) = 0.0194 L = 19.4 mL Ba(OH)2

The first step in answering this reaction is to write down the required reaction equations and then answer the questions from stoichiometry(mass-mole relationship).

The first equation is;

[tex]H2(g) + Cl2(g) ------->2HCl(g)[/tex]

The second equation is

[tex]2HCl(g) + Ba(OH)2(aq) -------> BaCl2(aq) + 2H2O(l)[/tex]

From stoichiometry;

1ml = 1cm3

Since hydrogen is in excess, chlorine is the limiting reactant

1 mole of Cl2 occupies 22400cm3

x moles of Cl2 occupies 100cm3

x = 1 * 100/22400

x = 0.00446 moles of Cl2

According to the reaction equation;

1 mole of Cl2 yields 2 moles of HCl

0.00446 moles of Cl2 yields 0.00446 * 2/1

= 0.00892 moles of HCl

From the reaction equation;

2 moles of HCl reacts with 1 mole of Ba(OH)2

0.00892 moles of HCl reacts with 0.00892 * 1/2 = 0.00446 moles of Ba(OH)2

Since 0.00446 moles of Ba(OH)2 reacted

number of moles = concentration * volume

number of moles =  0.00446 moles

concentration = 0.230M

Let the volume in ml be V

0.00446 =  0.230 * V/1000

V = 0.00446 * 1000/ 0.230

V = 19.39 ml

Volume in ml = 19.39 ml of Ba(OH)2

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Answer:

i think it wil be 567489

Explanation:

ik im right :)

Answer:

Explanation:

whats the qustion?

Answer:

there are 1.4201927800478769 moles in 83 particles of sodium chloride. or 1.42 for short.

Explanation:

Answer:

magnesium has a higher ionization energy because its radius is smaller. calcium has a higher ionization energy because it outermost sub-energy level is full. they have the same ionization energy because they have the same number of valence electrons.

Explanation:

hope this helps

The molar mass of aspartic acid is 133.05g/mol.

The molar mass is the mass per unit amount of substance of a given chemical entity. It is denoted by a symbol M. The SI unit of molar mass is kg/mol.

Aspartic acid is one of the building-block of amino acids which is responsible for synthesizing proteins and regulating hormones in the human body.

The chemical formula of aspartic acid is C4H7NO4.

Atomic mass of C = 12.011u, H = 1.007u, N = 14.006u, O = 16u

Molar mass of C4H7NO4 = 4(12.011)+7(1)+14.006+4(16)

                 = 48.044+7+14.006+64

                 = 133.05g/mol

Hence, the molar mass of aspartic acid is 133.05g/mol.

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Answer:

2

Explanation:

Answer: The theoretical yield of potassium chloride is 0.596 grams and the % Yield of potassium chloride is 83.9%

Explanation:

To calculate the moles :

[tex]\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}[/tex]    

[tex]\text{Moles of} KClO_3=\frac{1.00g}{122.5g/mol}=0.008moles[/tex]  

[tex]2KClO_3\rightarrow 2KCl+3O_2[/tex]  

According to stoichiometry :

2 moles of [tex]KClO_3[/tex] produce= 2 moles of [tex]KCl[/tex]

Thus 0.008 moles of [tex]KClO_3[/tex] will produce=[tex]\frac{2}{2}\times 0.008=0.008moles[/tex]  of [tex]KCl[/tex]

Theoretical yield of [tex]KCl=moles\times {\text {Molar mass}}=0.008moles\times 74.5g/mol=0.596g[/tex]

% yield = [tex]\frac{\text {Actual yield}}{\text {Theoretical yield}}\times 100=\frac{0.500g}{0.596g}\times 100\%=83.9\%[/tex]

The theoretical yield of potassium chloride is 0.596 grams and the % Yield of potassium chloride is 83.9%

Answer:

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Explanation:

Explanation:

Benzal .....

Molecular Formula: C11H12O4

Answer:

5.52 g

Explanation:

First we convert the given masses of both reactants into moles, using their respective molar masses:

Now we calculate with how many NH₃ moles would 0.056 O₂ moles react, using the stoichiometric coefficients:

As there more NH₃ moles than required, NH₃ is the excess reactant.

Then we calculate how many NH₃ moles remained without reacting:

Finally we convert NH₃ moles into grams:

Answer:

i tried

Explanation:

1-A divergent boundary occurs when two tectonic plates move away from each other

2-A transform plate boundary occurs when two plates slide past each other

3-A convergent boundary is when two plates come together

4- I don't know

Answer:

Chromosomes are duplicated in the "s phase" of interphase.

Answer:

fouse the fact sheet it helps more

Answer:

a. True

Explanation:

Hello there!

In this case, since the dose-response method is crucial concept in toxicology as it exhibits the result of exposures to toxic chemical compounds with changes in body functions or health, this statement is a. True , as this analysis is understood by means of the relationship -the higher the dose, the more severe the response-, and of course, it is based on observed data from controlled experiments in animal, human clinical, or cell studies, in the light of the determination of the toxicity of the analyzed chemical.

Regards!

Answer:

Eclipse: 3. To vanish

Corona: 2. During a solar eclipse, the moon covers the sun, a small ring of fire is visible around the edge

Umbra: 4. The inner, darkest, cone-shaped shadow is

Penumbra: 1. The outer, larger, lighter shadow

Answer:

I found 3. 2. 4. and 1.

Explanation:

I got my answer from this website https://eclipse.aas.org/eclipse-america/eclipse-glossary

Answer:

c

Explanation:

factor can cause more collision and increase the rate of reaction

Answer:

1. Rubidium metal reacts very rapidly with water to form a colorless basic solution of rubidium hydroxide (RbOH) and hydrogen gas (H2).

2. Rubidium sinks because it is less dense than water. It reacts violently and immediately, with everything leaving the container. Rubidium hydroxide solution and hydrogen are formed.

Answer:

Im gonna go with.... B. False

________________________________

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Yes it is true. That physical chemistry is a bridge between physics and chemistry. Because here we study the physical behaviours of the chemical reactions.

The molarity is an important method to calculate the concentration of a solution. The molarity of calcium chloride of 16.4 g in 750.0 mL of solution is 0.196 mol L⁻¹.

The molarity of a solution is defined as the number of moles of the solute present per litre of the solution. It is mainly employed in calculating the molarity of a binary solution. It is represented as 'M' and unit is mol L⁻¹.

The equation used to calculate the molarity is given as:

Molarity = Number of moles of the solute / Volume of the solution in litres

Molar mass of CaCl₂ = 110.98 g/mol

Given mass = 16.4 g

Number of moles = 16.4 / 110.98 = 0.147

750.0 mL = 0.75 L

Molarity = 0.147 / 0.75 = 0.196 mol L⁻¹

Thus the molarity is 0.196 mol L⁻¹.

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Answer: I'm going to say it's Antartica because the only seasons it have is summer and winter and it doesn't change.

Explanation: