BARINLY PLS HELP ME ASP !!! it’s science I need help fast pls

Answer:

bc the water molecules freeze

Answer:

2Al + 3NiSO4 -> Al2(SO4)3 + 3Ni

Explanation:

You just had to balance the equation by looking at Al2(SO4)3. It helps to pick the right coefficients for other components.

The correct set of coefficients for the balanced equation is: 2, 3, 1, 3.

When balancing the equation:  2Al + 3NiSO₄ → Al₂(SO₄)₃ + 3Ni .The coefficients indicate the number of each compound or element required for the equation to be balanced. In this case, the equation is balanced by ensuring that the number of atoms of each element is the same on both sides of the equation.

By placing the coefficients 2 and 3 in front of Al and NiSO₄, respectively, it ensures that there are an equal number of aluminum and nickel atoms on both sides. Additionally, the coefficient 3 in front of Ni and Al₂(SO₄)₃ ensures an equal number of nickel and sulfate groups.

Balancing equations is important because it follows the principle of conservation of mass, ensuring that no atoms are gained or lost during a chemical reaction. The set of coefficients chosen allows for the equation to meet this principle and maintain a balanced representation of the chemical reaction.

Learn more about balanced reaction, here:

https://brainly.com/question/14258973

#SPJ6

Answer:

One sentence that can be written for evidence is:

Fossils. Fossils document the existence of now-extinct past species that are related to present-day species.

The mass of nitrogen, N₂ required to react with 5.04 grams of oxygen O₂ is 1.76 grams

2N₂ + 5O₂ —> 2N₂O₅

Molar mass of N₂ = 2 × 14 = 28 g/mol

Mass of N₂ from the balanced equation = 2 × 28 = 56 g

Molar mass of O₂ = 2 × 16 = 32 g/mol

Mass of O₂ from the balanced equation = 5 × 32 = 160 g

SUMMARY

From the balanced equation above,

160 g of O₂ reacted with 56 g of N₂

From the balanced equation above,

160 g of O₂ reacted with 56 g of N₂

Therefore,

5.04 g of O₂ will react with = (5.04 × 56) / 160 = 1.76 g of N₂

Thus, 1.76 g of N₂ is needed for the reaction

Learn more about stoichiometry:

https://brainly.com/question/14735801

The ion's change in kinetic energy will be [tex]4.0 \times 10^3\;eV[/tex]

Given the following data:

Charge = 2 Coulombs.

Potential difference = [tex]2.0 \times 10^3 \;Volts[/tex]

Mathematically, kinetic energy of a charge is given by this formula:

[tex]K.E = qV[/tex]

Where:

Substituting the given parameters into the formula, we have;

[tex]K.E = 2 \times 2.0 \times 10^3 \\\\K.E = 4.0 \times 10^3\;eV[/tex]

Read more on kinetic energy here: https://brainly.com/question/1242059

Answer:

As a result, to prepare 250 ml of 0.20M NaCl, take 50 ml of 1.0M NaCl solution and add 200 ml of water.

Explanation:

Answer:

When coal is used to produce electricity , the heat energy is transformed into mechanical energy .

Explanation:

   Coal is one of the United States' most affordable and largest domestically produced energy sources. It is used to generate a significant quantity of our electricity, about 37%. Historically, producing power from coal has been correlated with a wide range of environmental impacts.

Water is converted into steam at a coal-fired steam plant, much like a nuclear plant, which in turn powers turbine generators to generate electricity. Here is how it operates in the process.

Without any pollution, the cooling water is returned to its source and the steam water is returned to the boiler to repeat the cycle.

Hence, the heat energy is transformed to the mechanical energy ,when coal is used to produce electricity.

Answer:

this is right because carbon and oxygen complete its octet

Answer:

Both A and R are true and R is the correct explanation of A

Explanation:

The number of atomic orbitals is the same for all elements in a period. Every element in the top row (the first period), for example, has only one orbital for its electrons. The electrons of all the elements in the second row (second period) have two orbitals. Every row adds an orbital as you progress down the table.

I hope this helps <3

Consider marking Brainliest.

Answer:

Hello I didi this quiz and i got 100% and the answer is (a) hope this helps <3

Explanation:

The amount of millimoles of solid naoh that must be added to 50.0 milliliters is: 5.0 mmol of NaOH.

The [H+] at pH 7.49 is:

[H+] = 10–^7.49

[H+]= 3.24×10–^8 M

And when the solution is half-neutralized pH will be:

pH = pKa while  [OCl– ]÷[HOCl] = 1

Now let find the millimoles of solid naoh:

0.20 mol HOCl÷1 L× 50.0 mL

= 10.0 mmol HOCl

Half of 10.0 mmol HOCl will be added

Millimoles of solid naoh=10.0 mmol HOCl÷2

Millimoles of solid naoh= 5.0 mmol of NaOH

Inconclusion the amount of millimoles of solid naoh that must be added to 50.0 milliliters is: 5.0 mmol of NaOH.

Learn more about Millimoles of solid naoh here:https://brainly.com/question/15299296

Answer:

The gravitational pull of the moon is probably changing how our atmosphere is.

Explanation:

Answer:

2C3H8S +13O2 =6CO2 +8H20 +2SO3

Answer:

get from (4,1) to (2,9) go up 8 and over 2 left (-2) - (4 - 2, 1 + 8), do this again (2 - 2, 9+8) and end up at (0,17) which is the y how do you change 7x+3y=3 into slope intercept form.

get from (4,1) to (2,9) go up 8 and over 2 left (-2) - (4 - 2, 1 + 8), do this again (2 - 2, 9+8) and end up at (0,17) which is the y how do you change 7x+3y=3 into slope intercept form.

get from (4,1) to (2,9) go up 8 and over 2 left (-2) - (4 - 2, 1 + 8), do this again (2 - 2, 9+8) and end up at (0,17) which is the y how do you change 7x+3y=3 into slope intercept form.

get from (4,1) to (2,9) go up 8 and over 2 left (-2) - (4 - 2, 1 + 8), do this again (2 - 2, 9+8) and end up at (0,17) which is the y how do you change 7x+3y=3 into slope intercept form.

Answer:

Element- Aluminum

Element - Mercury

Compound - Ferrous Sulfate

Compound - Sucrose

Element - Carbon​

Explanation:

Element: an element is a pure substance which is composed of only one type of atoms and that cannot be split or broken down into any simpler pure substance.

Examples of elements include:

Aluminum - it is composed of only atoms of aluminium. Each atom has 13 protons

Mercury - it is composed of only atoms of mercury. Each atom has 80 protons

Carbon - it is composed of only atoms of carbon. Each atom has 6 protons

Compound: a compound is a pure substance that is composed of two or more types of atoms (elements) in a fixed and definite proportion and that cannot be split into component elements by simple physical methods but only by chemical methods. Examples of compound include:

Ferrous sulphate: It is composed of atoms of Iron, Sulfur and Oxygen

Sucrose: It is composed of atoms of Carbon, Hydrogen and Oxygen.

Answer:

[D]can be reversed with no net change in either system or surroundings

A reversible process is one that can be reversed with no net change in either system or surroundings. Therefore, option (D) is correct.

A thermodynamic process can be reversible if the process can be turned back to both the system and the surroundings to return to their original states, with no other change in the universe.

No such processes as reversible processes can exist and these processes can easily be defined as idealizations or models of real processes.

A few examples of Reversible Processes: are the extension of springs, slow adiabatic compression or expansion of gases, electrolysis, the frictionless motion of solid, slow isothermal compression or expansion of gases

An irreversible process is a process in which the system and the surroundings do not return to their actual condition once the process is initiated. Examples of irreversible processes are Heat transfer, Diffusion, and electricity flow through a resistance.

Learn more about the reversible process, here:

https://brainly.com/question/22937109

#SPJ2

Answer:

Loss of oxygen

Explanation:

Shortcut defination of oxidation and reduction

Answer:

ionization energy is the answer

Answer:

[tex]\boxed {\tt 5.26315789 \ m/s}[/tex]

Explanation:

One way to find velocity is by dividing the distance by the time.

[tex]v=\frac{d}{t}[/tex]

The distance traveled by the man is 100 meters.

The time is 19 seconds.

[tex]d=100 \ m \\t= 19 \ s[/tex]

[tex]v=\frac{100 \ m}{19 \ s}[/tex]

Divide.

[tex]v=5.26315789 \ m/s[/tex]

The man's velocity is 5.26315789 meters per second.

Answer:

The number is known as 3 carbon molecules followed by 2 oxygen molecules. This is because on the periodic table, the letter C means carbon, and O2 means oxygen.

Answer:

The correct answer should be (A) 100%.

Explanation:

Since both the bull & the cow are hom0zygous (meaning they each have two identical alleles in their genes) and the black bull possesses the dominant gene, we can assume that our Punnett square should look like the model I attached below. Since "Bb" would contribute to the percentage of black-colored offspring, and all of the squares end up with "Bb", that means that 4 out every 4 offspring will be dark in color. Or, put more simply, the percentage of the offspring that will be black in color is 100%.

Answer:

No, it's a physical reaction.

Explanation:

A chemical change produces new chemical compounds, but combining water and powder is just mixing the powder with the water. It's not a new compound.

I don't know how to really explain, sorry :)

Answer:

I guess the answer is D point

Answer:

B. Energy stored in molecular bonds

Answer:

C8H18

Explanation:

carbon(iv) oxide and water.

Answer:

Answer: The radii of main-sequence stars increases as mass increases. Main Sequence stars? Answer: Giants have larger radii compared to main-sequence stars of the same luminosity.

Explanation:

Answer:

hi

Explanation:

hi

Answer: Pulley or a crane.

Explanation:

Answer:

An inclined plane would have to be too long, and a lever would be impractical. Pulleys are best used to raise objects.

Explanation: