PLEASE HELP ME WITH THID IFK IT!! ILL GIVE YOU EXTRA POINTS

Answer:

meiosis

Explanation:

Answer:

Location A

Explanation:

Answer:

location d

Explanation:

Answer:

1409725 m^3

Explanation:

volume = length * width * height

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

volume = 1409725 m^3

Answer:

pure substance,...................

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:

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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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:

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:

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:

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:

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:

electron configuration Cesium    Electronic Configuration [Xe] 6s1

Explanation:

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:

This happens twice a year during Earth's orbit. Near June 21 the north pole is tilted 23.5 degrees toward our Sun and the northern hemisphere experiences summer solstice, the longest day of the northern hemisphere year.

...

Do other planets have seasons?

Uranus

30,589

97.8

Spring Equinox* 2050

Summer Solstice*

points toward the sun.

closer the earth is to the sun the more  hot it will be the closer it is to summer,

you can see at D northern hemisphere is closest to sun and the north pole is pointing toward the sun.

Answer:..,.,

Explanation:88.,,'

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

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:

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

Answer:

12 protons, 12 neutrons and 10 electron

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:

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:

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

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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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

Answer:

44   98  

Explanation:

Carbon Dioxide (CO2) - Has 1 carbon and 2 oxygens,

C=12 O=16,

Relative atomic mass(Ar) = 12 + (16 x 2),

Relative formula mass(Mr)= 44

Sulphuric Acid (H2SO4) - Has 2 hydrogens, 1 sulphur and 4 oxygens,

H=1 S=32 O=16,

Relative atomic mass(Ar) = (1 x 2) + 32 + (16 x 4)

Relative formula mass(Mr)= 98

The statement that best explains why mass is not conserved in a nuclear change is that; "some of the matter is converted to energy".

In a nuclear reaction, mass is converted to energy. This is the energy that is given out when a new nuclide is formed during a nuclear reaction.

Generally, the scheme of a nuclear reaction is; Parent nucleus + Bombarding particle -------> Daughter nuclei + product particles + energy. This energy is obtained when mass is lost from left toi right in the reaction.

Hence, the correct answer is; some of the matter is converted to energy".

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Answer:

Unit 4 Lesson 2:

Energy Release Quick Check

1. 138

2. The conversion of an atom of one element into a different element through nuclear changes.

3. A nuclear equation is balanced according to mass number. A chemical equation is balanced according to the total mass before and after the change.

4. 82

5. Some of the matter is converted to energy.

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