Can someone help me with this chemistry question?

Answer:

2.5l

Explanation:

They higher the temprature the higher the volume

Answer:

about an hour but it might take a little longer it jist depends

Answer:

When gathering data, whether qualitative or quantitative, we can use several tools, such as: surveys, focus groups, interviews, and questionnaires. To help organize data, we can use charts and graphs to help visualize what's going on, such as bar graphs, frequency charts, picture graphs, and line graphs.

If your hypothesis is supported, you might think of ways to refine your hypothesis and test those. Either way, the process of experimentation often leads to whole new questions to explore. The possibilities are infinite, and the search for knowledge is never-ending.

The scientific method is a process that helps answer questions based on observations, carefully planned experiments and deductive reasoning. All scientific inquiry begins with the identification of a problem or question to be answered based on observation.

If the initial hypothesis is not supported, you can go back to the drawing board and hypothesize a new answer to the question and a new way to test it. ... Either way, the process of experimentation often leads to whole new questions to explore. The possibilities are infinite, and the search for knowledge is never-ending.

brainlest

Explanation:

Explanation:

what properties are you talking about?

Answer:

Hey mate....

Explanation:

This is ur answer.....

Hope it helps!

Brainliest pls!

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Answer:

the proton and the neutron

The particles present in the nucleus of an atom are the proton and the neutron.

Electrons are present outside the nucleus.

Answer:

The cause of the color "white" in wine is because the grape's skin is removed before fermentation.

The cause of the color "red" in wine is because the grape's skin is still intact while fermentation

The final temperature of the cup may be less than accurate thereby affecting the entire results of the experiment carried out using the cup.

A styrofoam cup is an insulated material. A styrofoam cup prevents heat gain or looses from the cup. Heat is gained by the water inside the styrofoam cup. The cup prevents exchange of energy with the environment.

When water is lost from the styrofoam cup, the final temperature of the cup may be less than accurate thereby affecting the entire results of the experiment carried out using the cup.

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Answer:

A carboxyl group (COOH) is a functional group consisting of a carbonyl group (C=O) with a hydroxyl group (O-H) attached to the same carbon atom. Carboxyl groups have the formula -C(=O)OH, usually written as -COOH or CO2H.

The mass of water that can be boiled by 1 g of gasoline by raising its temperature from 20 °c to 100 °c is  17.6 g.

Now, we know that energy can not be created nor destroyed but it can be converted from one form to another.

The heat produced by the gasoline is equal to the heat gained by water. Mathematically;

1g ×  45 × 10^3 = [1 g × 4.18  × (100 - 20) + 2540m]

45 × 10^3 = 334.4 + 2540m

45 × 10^3 - 334.4 =  2540m

m =  45 × 10^3 - 334.4 /2540

m = 17.6 g

The mass of water that can be boiled by 1 g of gasoline by raising its temperature from 20 °c to 100 °c is 17.6 g.

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First organisms to convert solar energy to chemical energy were the organisms which are called as cyanobacteria.

Energy which is stored in the chemical bonds of chemical compounds is called chemical energy.Chemical energy is released during the occurrence of chemical reaction.Reactions wherein energy is given out in the form of heat is called exothermic reactions.

Chemical energy can be converted to other forms of energy like electrical energy during the process of electrolysis and to thermal energy as in the case of thermal engines.

It can also be converted to kinetic energy during explosions . It is stored in batteries, coal, biomass, food, vehicle air bags,etc.During digestion chemical energy is converted to mechanical and thermal energy.

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Answer:

Carbon dioxide, when present in sufficient amounts, will bind with water to form carbonic acid, which is capable of dissociating into bicarbonate and hydrogen ions.

Explanation:

With the help of carbonic anhydrase which further catalyzes the reaction to convert carbonic acid back into carbon dioxide and water. The carbon dioxide is then expelled from the lungs.

Explanation:

Seafloor spreading and other tectonic activity processes are the result of mantle convection .Mantle conversion is the slow churning motion of Earth’s mantle convection carry heat from the lower mantle and core to lithosphere

Answer:

the mass of each gas

Explanation:

Two balloons hold two different gases. The gases are held at the same pressure, volume, and temperature. Which quantity can differ between

the two gases?(1 point)

the gas constant of each gas

the molar volume of each gas

the mass of each gas

Two balloons hold two different gases. The gases are held at the same pressure, volume, and temperature. Which quantity can differ between the two gases?(1 point) the gas constant of each gas the gas constant of each gas the molar volume of each gas the molar volume of each gas the mass of each gas the mass of each gas the number of moles of each gas

the number of moles of each gas

PV = nRT

The gases have the same P.V, T and n

R is constant AND SO constant for both

the only difference is the molar mass of the gas

for the same number of moles, the  balloons will have different weights depending on the gas  

so the answer is

the mass of each gas

Answer:The number of BH+ Molecules will increase , and the number of water molecules will decrease

Explanation:

The number of OH- ions will increase, and the number of BH molecules will decrease.

Option (3) is correct.

In the given base solution equation, B + H₂O = BH⁺ + OH⁻, when the strength of the base is increased, more B molecules will react with water to form BH⁺ and OH⁻ ions. This happens because a stronger base donates more OH⁻ ions into the solution, increasing its concentration.

As the base becomes stronger, more B molecules will participate in the reaction, forming fewer BH⁺ molecules since they are being converted to BH⁺ ions. Simultaneously, the increased concentration of OH⁻ ions means that the number of OH⁻ ions in the solution will increase.

Overall, the change in the number of particles can be summarized as follows:

The number of BH molecules will decrease.

The number of OH⁻ ions will increase.

This change reflects the increase in the concentration of OH⁻ ions, which is a characteristic of a stronger base solution.

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Answer:

alpha decay or particle

Explanation:

1. The energy associated with an electromagnetic radiation of [tex]6.34 \times 10^{15} \;Hertz[/tex] is equal to [tex]4.2 \times 10^{-18}\;Joules[/tex].

2. The frequency of one of the bands of the sodium emission spectrum is [tex]5.13 \times 10^{14}\;Hertz[/tex]

Given the following data:

Scientific data:

1. To determine the energy associated with an electromagnetic radiation of [tex]6.34 \times 10^{15} \;Hertz[/tex], we would apply Einstein's equation for photon energy:

Mathematically, Einstein's equation for photon energy is given by the formula:

[tex]E =hf[/tex]

Where:

Substituting the given parameters into the formula, we have;

[tex]E = 6.626 \times 10^{-34}\times 6.34 \times 10^{15} \\\\E = 4.2 \times 10^{-18}\;Joules[/tex]

2. To determine the frequency of one of the bands of the sodium emission spectrum:

Mathematically, the frequency of a wave is given by the formula:

[tex]Frequency = \frac{Speed}{wavelength} \\\\Frequency = \frac{3 \times 10^8}{5.85 \times 10^{-7}} \\\\Frequency =5.13 \times 10^{14}\;Hertz[/tex]

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Answer:

Nitrogen

Explanation:

Pure sugar is sucrose C12H22011

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Here's the procedure to Crack an egg ~

Step 1 ~

Step 2 ~

Step 3 ~

Answer:

does not depend

Explanation:

Answer:

Explanation:

I hope it's help u

Answer:

24

Explanation:

2.40*10=24.0

Answer:

I'll h he d Glendale https hehe

Explanation:

grendel v BB hehe iron v

Answer:

Metals

Explanation:

There are more metals next time trying checking the table they will be in colored squares to count to see which has more! HOPE THIS HELPED!

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Answer: A hydrocarbon contains 92.3% by mass of carbon and 7.7% by mass of hydrogen. The empirical formula of the compound will be oose answer:

CH CH5 CH CH3.

Explanation: :)

Potential energy is the energy an object has because of where it is in relation to other objects. Kinetic energy is what makes the object move. Many rides use the transfer of potential energy to kinetic energy to move along the track. Hope this helps!

Answer:

A.Yes

Explanation:

Answer:

KBr final solution:

V = 250mL --> 0.25L

Concentration/Molarity = 1.5 mol/L

To find the amount of moles of KBr here, just multiply the volume by the concentration (0.25 x 1.5 = 0.375 mol)

So the amount of moles for KBr is 0.375 mol. Now we know that the mass divided by the molar mass (the atomic mass values of K and Br in the periodic table added together) would give us the amount of moles aswell.

n = moles

m = mass

M = molar mass

n = m/M

so if we rearrange this equation to find mass, we would get:

m = n x M

Molar mass for KBr: (39.09) of K + (79.90) of Br = 118.99

m = 0.375 mol    x    118.99

m = 44.62g

Therefore 44.62g of KBr is needed to make 250mL of a 1.5 M KBr solution.

Answer:

Carbon monoxide (CO)

Explanation:

Organic compounds are generally any chemical compounds that contain "carbon-hydrogen bonds". Due to carbon's ability to catenate, millions of organic compounds are known. The study of the properties, reactions, and syntheses of organic compounds comprise the discipline known as organic chemistry.

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Blank # 1 - Observation

Blank # 2 - Observation

Blank # 3 - Observation

Blank # 4 - Inference

Blank # 5 - Observation

Answer:

Numbers 1,2,3, and 5 are all O
And Number 4 is aN I