PLEASE HELP, I REALLY NEED HELP WITH THIS!!!​

5) B

6) C

7) B newland, law of octaves

8) A)

Matter are anything that is made up of atoms. The quantity of matter can be observed only on the basis of mass and volume calculation. Therefore, matter can be divided on the basis of motion and spacing of the particles.

Matter is a substance that has some mass and can occupy some volume. The matter is mainly used in science. Matter can be solid, liquid or gas.

Matter is anything that is made up of atoms. Anything around us that can be physically seen and touched are matter. Ice, water and water vapors are example of matter.

The motion and spacing of particles is zero in case of solid.  The motion and spacing of particles is more than solid in case of liquid.  The motion and spacing of particles is the most in case of gas.

Therefore, matter can be divided on the basis of motion and spacing of the particles.

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Movement of tectonic plates, erosion, earthquakes, and landslides, etc causes a mountains to change in height or location.

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Answer: C

Explanation:

Increasing the temperature increases the rate of dissolving.

The ionic charges of the ions formed by magnesium and oxygen are Mg²⁺ and O²⁻, respectively. When these ions combine, they form a neutral compound.

To determine the empirical formula of the compound, we need to find the lowest whole number ratio of Mg²⁺ ions to O²⁻ ions that results in a neutral compound. This can be done by finding the least common multiple of the two charges.The least common multiple of 2 and 2 is 2. Therefore, the empirical formula for the compound formed between magnesium and oxygen is MgO.
Similarly, the ionic charges of the ions formed by lead and iodine are Pb²⁺ and I⁻, respectively. The least common multiple of 2 and 1 is 2. Therefore, the empirical formula for the compound formed between lead and iodine is PbI₂.
The experimental results would match the predictions if the empirical formulas obtained from the charges of the ions formed by the elements match the formulas of the actual compounds formed between the elements.

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Answer:

Diboron tetrachloride --->  B2Cl4

cubic unit cell is the smallest repeated unit which have all angles equal to 90 and all have edge lengths equal

It is the type of the Unit cell which is having all angles equal to 90 and all sides equal to each other

it's is a unit cell with cubic structure

Answer:

Summary. J.J. Thomson's experiments with cathode ray tubes showed that all atoms contain tiny negatively charged subatomic particles or electrons.

Explanation:

Thomson proposed the plum pudding model of the atom, which had negatively-charged electrons embedded within a positively-charged "soup."

Answer:

SO2 gas leads to acid rain

Explanation:

If we consider the reaction; Cu2S + 2O2 → 2CuO + SO2 we will notice that SO2 gas is produced. The release of SO2 gas into the atmosphere leads to acid rain or acid precipitation. Acid rain refers to a drop in the pH of rain water because it has dissolved acidic gases in the atmosphere such as sulphur dioxide. These acid gases are also known as acid anhydrides.

Acid rain is known to lead to the corrosion of roofing sheets, rise in the pH of terrestrial water bodies which threatens the survival of aquatic organisms, leaching of important soil nutrients and decline in the aesthetic appeal of statues and monuments.

Hence the sulphur dioxide produced in this reaction should be prevented from escaping into the atmosphere to avoid the formation of acid rain with its attendant deleterious consequences as listed above.

Answer: the moon passes through the earth's shadow

Explanation:

In this case the earth's shadow blocks the sun's light which normally is reflected off the moon's surface. So since the sunlight is blocked by the earth we call this a lunar eclipse

Answer:

The factors that determine the extent of the ice cover at the poles are the temperature, the winds and the ocean currents. The Artic Ocean sea ice cover is observed to change more in response to a changes in temperature while the Antarctic sea ice cover change more with changes in the wind and ocean currents

Increased evaporation at the equator will come about as a result of rising temperatures combined with the high temperatures of the summer can result in a reduction in the amount of ice cover in the North pole oceans, while the high evaporation rate can lead to higher ocean water circulation rate between North and South poles and the equator such that the ice cover in Antarctica

Therefore, an increase in evaporation near the equator will decrease the ice cover at the poles

Explanation:

The value of the equilibrium constant, K, is dependent on the nature of the products and reactants. and the temperature of the system.

The correct answer is d. I, II.

The value of the equilibrium constant, K, is dependent on the following factors:

I. The temperature of the system: The equilibrium constant, K, is temperature-dependent. Changing the temperature alters the balance between the forward and reverse reactions, thus affecting the value of K.

II. The nature of the products and reactants: The identity and properties of the products and reactants involved in the equilibrium reaction influence the value of the equilibrium constant. Different reactions will have different equilibrium constants based on the specific molecules and compounds involved.

III. The concentration of the products: The concentrations of the products at equilibrium play a role in determining the value of the equilibrium constant. The ratio of product concentrations to reactant concentrations affects the value of K.

IV. The concentration of the reactants: Similarly, the concentrations of the reactants at equilibrium also impact the value of the equilibrium constant. The relative amounts of reactants present influence the value of K.

In summary, the equilibrium constant, K, is influenced by the temperature, the nature of the reactants and products, as well as the concentrations of both the products and reactants.

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Answer: The farther away the moon is from earth the lower the tides would be.

Explanation: Because of the moons close proximity to Earth its gravity pulls up on water which causes the high and low tides, therefore if the moon is farther away its effect would be lessened.

Because of the moons close proximity to Earth its gravity pulls up on water which causes the high and low tides, therefore if the moon is farther away its effect would be lessened.

On the planet, tides rise and fall due to the moon's gravitational pull and the Earth's rotating force. The animals that are most impacted by tidal changes in coastal regions have special survival strategies.

A tide is the term used to describe the seawater's alternating approach and retreat along a shoreline. At high tide, the water reaches the shoreline to the greatest extent. When the tide recedes the most, it is at low tide.

The two primary causes of high and low tides are the Earth's rotation and the moon's gravitational pull on the planet. The Moon's pull is greatest on the side of the Earth nearest to it, and as a result, the oceans rise and high tides are produced.

Therefore,  Because of the moons close proximity to Earth its gravity pulls up on water which causes the high and low tides, therefore if the moon is farther away its effect would be lessened.

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Answer:

Oxygen is one of the most abundant elements on Earth. Oxygen accounts for 20.9% of the atmosphere, 45% of the Earth's crust (as oxide minerals) and also accounts for almost all of the mass of water on Earth (89%). It is found in a huge number of natural minerals including sulfates, phosphates, carbonates and oxides.

Explanation:

Hope this helps

2ⁿ is the time complexity of an algorithm that operates in exponential time. This means that the process times double with the addition of each data element.

In computational complexity theory, the time complexity of an algorithm describes the relationship between the input size and the amount of time it takes to run. An algorithm with exponential time complexity implies that the runtime grows exponentially as the input size increases.

In this case, if the process times double with the addition of each data element, it indicates an exponential growth pattern. This can be represented by the function 2ⁿ, where n denotes the number of data elements.

The time complexity of O(2ⁿ) is used to express exponential time complexity. It indicates that the algorithm's runtime increases exponentially with the input size.

As the number of data elements grows, the runtime of the algorithm becomes significantly larger, making it inefficient for larger inputs.

Therefore, the time complexity of an algorithm operating in exponential time is represented by 2ⁿ, where n is the number of data elements, and the process times double when adding each element.

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According to ideal gas law ;

PV = nRT where, P refers to the pressure of the ideal gas, V is the volume of the ideal gas, n is the total amount of ideal gas that is measured in terms of moles, R is the universal gas constant, and T is the temperature.

If Volume of system is reduced to half = V/2

then; P = 2(nRT/V), Pressure will be doubled to reestablish the equilibrium.

What is Chemical equilibrium?

Chemical equilibrium, condition in the course of a reversible chemical reaction in which no net change in the amounts of reactants and products occurs. A reversible chemical reaction is one in which the products, as soon as they are formed, react to produce the original reactants.

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Answer:

b it controls the entry and exit of substances

Answer:

60 V

Explanation:

From;

Vs/Vp = Ns/Np

Where;

Vs = voltage in the secondary coil = 6V

Vp = voltage in the primary coil= ??

Ns = number of turns in the secondary coil = 9

Np= number of turns in the primary coil = 90

6/Vp = 9/90

Vp= 90 * 6/9

Vp=  60 V

Given:

As we know,

→ \(\frac{V_s}{V_p} = \frac{N_s}{N_p}\)

or,

→ \(V_p = \frac{N_p\times V_s}{N_s}\)

By substituting the values, we get

        \(= \frac{90\times 6}{9}\)

        \(= \frac{300}{9}\)

        \(= 60 \ V\)      

Thus the above answer is  correct.

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Answer:

The increase in the IMF in a molecule means that it will also be increasing in the boiling point.

Explanation:

IMF are important in this because they let you know which bonds are stronger than others.

For example, a hydrogen bond is much stronger than a dipole-dipole bond. And an ionic bond is much stronger than a hydrogen bond.

As you go increasing in IMF strength, that means that it will be harder for them to separate. This is why as the IMF bonds are increasing in strength, their boiling points will also be increasing because they would need more energy in order to be separated.

If Ana's brother rode in a blue car that travels a total distance of 220 feet around the track. the difference between the radii of the two circular tracks is 15 feet.

To find the difference between the radii of the two circular tracks, we can use the formula for the circumference of a circle, which is:

C = 2πr

where C is the circumference and r is the radius.

Let r1 be the radius of the blue car's track and r2 be the radius of the green car's track. We know that the blue car travels a total distance of 220 feet around its track, so:

2πr1 = 220

Simplifying this equation, we get:

r1 = 35 feet (rounded to the nearest whole number)

Similarly, we can find the radius of the green car's track:

2πr2 = 126

r2 = 20 feet (rounded to the nearest whole number)

Finally, we can find the difference between the radii of the two tracks:

r1 - r2 = 35 - 20 = 15 feet

Therefore, the difference between the radii of the two circular tracks is 15 feet.

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the blades in a windmill rotate

Explanation:

The polarity of a bond is given by the difference in electronegativity between the two atoms that form said bond.

Answer:

The acid will be neutralized overtime

Explanation:

The presence of the pyrites leads to the leaching of large amounts of sulphuric acid, however the basic carbonates neutralizes the acid according to the reaction equation;

CaCO3 + H2SO4 ---> CaSO4 + CO2 + H2O.

This will prevent all the deleterious consequences associated with the leaching of the acid in the abandoned coal mine.

The correct ratio of the atoms of the two elements in the sample of copper chloride compound would be 1:2.

Copper chloride has a chemical formula, \(CuCl_2\).

Thus, an atom of copper, Cu, combines with 2 atoms of chlorine, Cl.

The 2 chlorine atoms are recipients of an electron each from the copper atom which happens to have 2 electrons in its outermost valence shell.

Therefore, the ratio of copper to chlorine atoms in the compound is 1:2.

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Answer:

When an atom loses an electron it becomes ionized

Answer:

Just combine one 12-oz can of evaporated milk and 1-1/2 cups granulated sugar in a sauce pan. Bring the mixture to a boil over medium heat, stirring constantly. Continue cooking, until the sugar dissolves, and the milk thickens slightly. Allow your sweetened condensed milk to cool.

Explanation:

hope this helps

Answer:

Mix one 12-oz can of evaporated milk and 1-1/2 cups granulated sugar. :)

Answer:

the answer is d.

1. Write the symbols for each element.

2. Find the charge for each element using the Periodic Table. Write it above each element. (because there is a (III) after nickel, the charge of nickel is +3. oxygen is in group 16, which means it has a -2 charge.)

3. See if the charges are balanced (if they are you're done!)

- when you criss cross (getting Ni2O3, the charges are canceled out, so the equation is balanced.

if you still need help or if this is confusing, look up How to Write the Formula for Nickel (III) oxide  by Wayne Breslyn on YT.

Answer:

D.) Ni2O3

Explanation:

edge 2021 (just needed the daily answer)

Salts that will generate an acidic solution: A) MgSO⁴, D) NH⁴CI, and G) Cu(NO³)².

Salts that will generate a basic solution: B) LiF, C) K²S, and J) K²CO³.

Salts that will generate a neutral solution: E) NaCH³COO, F) Csl, H) KBr, and I) FeCl³.

Different salts can generate solutions with varying pH levels, indicating their acidic, basic, or neutral properties.

The salts MgSO⁴, NH⁴CI, and Cu(NO³)² will generate acidic solutions when dissolved in water. This is because they release hydrogen ions (H⁺) into the solution, increasing its acidity.

On the other hand, salts like LiF, K²S, and K²CO³ will produce basic solutions. They contain hydroxide ions (OH⁻) or produce hydroxide ions when dissolved, which increase the concentration of hydroxide ions and raise the pH, making the solution more alkaline.

Salts such as NaCH³COO, Csl, KBr, and FeCl³ will lead to neutral solutions as they do not significantly affect the concentration of H⁺ or OH⁻ ions when dissolved.

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Answer:

D

Explanation:

The picture depicts the data of the chemical, explaining that as the temperature rises, the chemical reaction rate would increase as well.

Answer:

There may be more than one reason, but one I have is how ocean currents act almost like a conveyor belts of warm / cold water, sending heat toward the polar regions and helping tropical areas cool off. This is influencing both weather and climate.

Explanation:

I think it is pretty self explanatory, hope this helps