Help please I’ll mark as brainiliest

Answer:

AUMENTA EL SALARIO MÍNIMO Y CREA MÁS EMPLEOS

Explanation:

The given electronic configuration 1s²2s²2p⁶3s²3p⁶4s²3d⁸ is the Nickel (Ni). Therefore, option (B) is correct.

The electron configuration can be explained as electrons being filled in different energy levels of an atom of a particular element. In the electron configuration, the number of electrons is usually written as a superscript of atomic subshells. For example, the electron configuration of Oxygen is written as 1s²2s²2p⁴.

The sequence of fully filled subshells that correspond to the electronic configuration of a noble gas is denoted by square brackets. The principal quantum number (n) can be used to evaluate the maximum number of electrons in an electron shell.

The value of 2n² is given the maximum number of electrons. The atomic orbitals at low energy must be filled first occupying an orbital with a higher energy level.

The total number of electrons filled in the given electronic configuration  1s²2s²2p⁶3s²3p⁶4s²3d⁸  is 28. The atomic number of Nickel is 28 therefore it is the configuration of Nickel.

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Answer:

About 10.2 g Li₃N.

Explanation:

We are given the reaction:

[tex]\displaystyle \text{6 Li(s) + N$_2$(g) }\longrightarrow \text{2 Li$_3$N(s)}[/tex]

And we want to determine the amount of Li₃N that can be formed from 6.07 g of Li and an excess of nitrogen.

To convert from g Li to g Li₃N, we can: (1) convert from g Li to mol Li, (2) mol Li to mol Li₃N, and (3) mol Li₃N to g Li₃N.

Molecular weight of Li₃N:

[tex]\displaystyle \begin{aligned}\text{MW}_\text{Li$_3$N} & = (3 (6.94) + 14.01) \text{ g/mol} \\ \\ & =34.83\text{ g/mol} \end{aligned}[/tex]

This yields three ratios:

[tex]\displaystyle \frac{1 \text{ mol Li}}{6.94 \text{ g Li}}, \frac{2 \text{ mol Li$_3$N}}{6 \text{ mol Li}}, \text{ and } \frac{34.83 \text{ g Li$_3$N}}{1 \text{ mol Li$_3$N}}[/tex]

From the initial value, multiply:

[tex]\displaystyle 6.07 \text{ g Li} \cdot \frac{ 1 \text{ mol Li}}{6.94 \text{ g Li}} \cdot \frac{2 \text{ mol Li$_3$N}}{6 \text{ mol Li}} \cdot \frac{34.83 \text{ g Li$_3$N}}{1 \text{ mol Li$_3$N}} = 10.2\text{ g Li$_3$N}[/tex]

In conclusion, 10.2 g of Li₃N is formed from 6.07 g of Li and an excess of nitrogen.

Answer:

Advantages of synthetic detergents over soaps: Detergents can work with hard water too while soaps cannot. Synthetic detergents are stronger cleansing agents than soaps.

Explanation:

sorry if I'm wrong

Answer:

Explanation:The formation of the oxide ion, O

2−

(g), from oxygen atom requires first an exothermic and then an

endothermic step as shown below:

O(g)+e

−

→O

−

(g);Δ

f

​

H

⊖

=−141kJmol

−1

O

−

(g)+e

−

→O

2−

(g);Δ

f

​

H

⊖

=+780kJmol

−1

Thus, process of formation of O

2−

 in gas phase is unfavourable even though O

2−

 is isoelectronic with neon. It is due to the fact that:

The formula and names of the compounds are:

1. Formula of compound => MoF₃

Name of compound => Molybdenum trifluoride

2. Formula of compound => MoF₄

Name of compound => Molybdenum tetrafluoride

3. Formula of compound => MoF₅

Name of compound => Molybdenum pentafluoride  

4. Formula of compound => MoF₆

Name of compound => Molybdenum hexafluoride  

1. Determination of the name and formula of the molybdenum fluoride having 63.0% of molybdenum.

Molybdenum (Mo) = 63.0%

Fluorine (F) = 100 – 63 = 37%

Mo = 63.0%

F = 37%

Divide by their molar mass

Mo = 63.0 / 96 = 0.656

F = 37 / 19 = 1.947

Divide by the smallest

Mo = 0.656 / 0.656 = 1

F = 1.947 / 0.656 = 3

Therefore,

Formula of compound => MoF₃

Name of compound => Molybdenum trifluoride

2. Determination of the name and formula of the molybdenum fluoride having 56.0% of molybdenum.

Molybdenum (Mo) = 56.0%,

Fluorine (F) = 100 – 56 = 44%

Mo = 56%

F = 44%

Divide by their molar mass

Mo = 56 / 96 = 0.583

F = 44 / 19 = 2.316

Divide by the smallest

Mo = 0.583 / 0.583 = 1

F = 2.316 / 0.583 = 4

Therefore,

Formula of compound => MoF₄

Name of compound => Molybdenum tetrafluoride

3. Determination of the name and formula of the molybdenum fluoride having 50.0% of molybdenum.

Molybdenum (Mo) = 50.0%,

Fluorine (F) = 100 – 50 = 50%

Mo = 50%

F = 50%

Divide by their molar mass

Mo = 50 / 96 = 0.520

F = 50 / 19 = 2.632

Divide by the smallest

Mo = 0.520 / 0.520 = 1

F = 2.632 / 0.520 = 5

Therefore,

Formula of compound => MoF₅

Name of compound => Molybdenum pentafluoride  

4. Determination of the name and formula of the molybdenum fluoride having 46.0% of molybdenum.

Molybdenum (Mo) = 46.0%,

Fluorine (F) = 100 – 46 = 54%

Mo = 46%

F = 54%

Divide by their molar mass

Mo = 46 / 96 = 0.479

F = 54 / 19 = 2.842

Divide by the smallest

Mo = 0.479 / 0.479 = 1

F = 2.842 / 0.479 = 6

Therefore,

Formula of compound => MoF₆

Name of compound => Molybdenum hexafluoride  

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The mass of the Pyrex glass that absorbs 1940J of energy is 79.52grams.

The mass in a calorimetry procedure can be calculated using the following formula:

Q = mc∆T

Where;

According to this question, an unknown mass of each of the following substances, initially at 23.0∘C , absorbs 1940 J of heat. The final temperature is recorded as indicated. The mass can be calculated as follows:

1940 = m × 0.753 × (55.4°C - 23.0°C)

1940 = 24.39m

m = 79.52grams.

Therefore, 79.52grams is the mass of the pyrex glass.

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There are 500 mg of calcium carbonate is in this caltrate tablet

The equation of the reaction is;

2HCl(aq) + CaCO3(aq) ------> CaCl2(aq) + CO2(g) + H2O(l)

Next, we have to obtain the amount HCl reacted as follows;

Number of moles = concentration × volume

Volume = 34.46 mL or 0.03446 L

Concentration =  0.291 M

Number of moles = 0.291 M ×  0.03446 L

Number of moles = 0.01 moles

Since the reaction of HCl and CaCO3 are in the ratio of 2:1

2 moles of HCl reacts with 1 mole of CaCO3

0.01 moles of HCl reacts with  0.01 moles ×  1 mole/2 moles

= 0.005 moles of CaCO3

Mass of CaCO3 = number of moles  × molar mass

Mass of CaCO3 =  0.005 moles of CaCO3 × 100 g/mol

Mass of CaCO3 =  0.5 g or 500 mg

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Answer:..,.,

Explanation:88.,,'

The scientific question related to the whale story is how were the whale's rescued? The non-scientific question related to the whale story is what was the need for spending such large amount of money?

It is a one where an investigation can be designed and can be approached to completion in order to find out an answer.This can be done without doing different investigations.

It should have valuable information and should have the potential that it can be answered by direct observations.It should always lead to a hypothesis.

A scientific question must have the following characteristics:

Whereas, characteristics of a non -scientific question is that they are broad,and have many variables to be tested.

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Answer:

1409725 m^3

Explanation:

volume = length * width * height

volume = (1.07e2) * (31) * (4.25e2)

volume = 1409725 m^3

Answer:

Tight monetary policy is an action undertaken by a central bank such as the Federal Reserve to slow down overheated economic growth. Central banks engage in tight monetary policy when an economy is accelerating too quickly or inflation—overall prices—is rising too fast.

Answer:

D.  5

Explanation:

C3H8  +  5O2  =  3CO2  +  4H2O

Carbon = 3 on both sides

Hydrogen = 8 on both sides

Oxygen = 10 on both sides

The balanced chemical equation for C₃H₈  +  5O₂ =  3CO₂  +  4H₂O

A balanced chemical equation is one in which several reactants are equal to several products.

The formulas for the reactants and products are used to create a balanced equation that represents a chemical reaction. It displays how many units of each chemical were used.

The left and right sides of the reaction arrow of a balanced equation have an equal number of each type of atom.

The reactants and products are placed on the left and right sides of the arrow, respectively, to create a balanced equation.

Carbon = 3 on both sides

Hydrogen = 8 on both sides

Oxygen = 10 on both sides

Therefore, The balanced chemical equation for C₃H₈  +  5O₂  =  3CO₂ +  4H₂O.

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Answer:

2.567

Explanation:

To change milliliters into liters you divide by 1000

So when you divide 2567 by 1000 you get 2.567

Answer:

electron configuration Cesium    Electronic Configuration [Xe] 6s1

Explanation:

Answer:

meiosis

Explanation:

Answer:

no

Explanation:

s ss s s s s s s s s s s s s ss s s s s dkfkf f f f f f f f

If you are talking about an atom with a full octet, then it would just have a full shell of 8 valence electrons.

Answer:

valence

Explanation:

Answer:

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

[tex]n = \frac{N}{L} \\[/tex]

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

[tex]n = \frac{3.5 \times {10}^{23} }{6.02 \times {10}^{23} } = \frac{3.5}{6.02} \\ = 0.581395[/tex]

We have the final answer as

Hope this helps you

3d < 4s  is NOT a correct ordering of subshells in the periodic table because 4s is at a lower energy level than 3d.

According to the Aufbau principle,   The electron configuration of an element tells how electrons of that element are arranged in thier subshells from their lowest energy state before the highest energy state.

For example, before a 2s subshell can be occupied, A 1s subshell must be filled.

The orbitals are filled in this order:

1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5d, 6p, 7s,

For example, Na (sodium) with 11 atomic number is written as 1s2 2s2 2p6 3s1

Therefore,

2p < 3s   True

3d < 4p   True

3d < 4s     False

4s < 4p   True

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Answer:

You place an enchantment ta ke then you place a weapon or armor and press enchant. I hope this helps

Explanation:

Answer:

Depends on what you need to enchant

Explanation:

You can enchant any tools or armor if you put lapis in the box with a symbol and you have enough exp which will show up next to the enchantment you can enchant those and you can also enchant any normal books that way

Answer:The law of conservation of energy states that energy can neither be created nor destroyed - only converted from one form of energy to another. This means that a system always has the same amount of energy, unless it's added from the outside. ... The only way to use energy is to transform energy from one form to another.

Answer:

law of conservation of energy is energy cannot be created or destroyed but can be transformed from one form to another

it is true as potential energy can be converted into kinetic energy

Answer:

12 protons, 12 neutrons and 10 electron

Answer:

5.15 moles

Explanation:

2zn + o2 = 2zno

5.15 2.57 5.15 moles

nzno=500/(16x2+65)= 5.15 moles

-> nzn = 5.15 x 2 ÷ 2 = 5.15 moles

Explanation:

A quarter moon is called a quarter moon because it is the moment the moon has reached the first quarter of it orbit around the earth

Answer:

To convert 100.0 g of water at 20.0 °C to steam at 100.0 °C requires 259.5 kJ of energy.

The amount of heat which is required for a phase change of a substance without any change in temperature is known as latent heat. Here the amount of heat required is 10,800 calories.

The heat capacity of a substance or a system is defined as the amount of heat required to raise its temperature through 1°C. It is denoted by C. The specific heat capacity is the amount of heat required to raise the temperature of 1 gram of the substance through 1°C.

The equation to calculate the heat required is:

Q = mc (T₂ - T₁) + mL₁

L = Latent heat of vaporization of water

m = mass

c = specific heat capacity

T₂ = Final temperature

T₁ = Initial temperature

T₂ - T₁ = 100 - 100 = 0°C

Q = 20 g × 1 cal /g°C × 0°C +  20 g × 540 cal/g

Q = 10,800 calories

Thus the amount of heat required is 10,800 calories.

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Answer:

Location A

Explanation:

Answer:

location d

Explanation: