Pls help I am confused my sister got me sweating

Answer:

a

Explanation:

Answer: Atoms are the smallest particles of an element.

Answer:

(a) CO2 will have more average kinetic energy per molecule.

(b) The root mean square speed for H2 is greater than CO2.

(c) The number of molecules will remain the same in each case.

(d) The density of CO2 will be greater than the density of H2.

Explanation:

(a) The formula of Average Kinetic Energy is:

In this case, the higher the temperature, the higher the energy, so CO2 will have more average kinetic energy per molecule.

(b) The formula of Root mean square speed:

Replacing the values of constant gases (R), temperature (T) and molar mass (kg/mol) for each compound, we can calculate the root mean square speed.

The root mean square speed for H2 is 2,609.4m2/s2 and for CO2 is 410.96m2/s2.

(c) The number of molecules will remain the same in each case since the volume is constant.

(d) Using the formula of density (density=mass/volume), and knowing that the volume remains the same, the density of CO2 will be greater than the density of H2 since the pressure is higher in the flask of CO2.

Answer:

I think it's green or blue...

Answer:

3.2877204

Explanation:

The ozone layer is present in the stratosphere layer of the Earth's atmosphere. Therefore, option (C) is correct.

An atmosphere can be defined as layers of gases that envelop a planet and is held in place due to the gravity of the planetary body. A planet contains an atmosphere when the gravity is great and the temperature of the atmosphere of any planet is low.

Earth's atmosphere is made of Nitrogen (78 %), Oxygen (21%), Argon (0.9%), and Carbon dioxide (0.04 %).  The troposphere can be defined as the lowest layer of the atmosphere. The troposphere contains 75 to 80 % of the mass of the atmosphere.

The stratosphere contains the ozone layer, at an altitude between 15km and 35km. This atmospheric layer absorbs most of the UV radiation that Earth receives from the Sun.

Learn more about the atmosphere, here:

https://brainly.com/question/29379794

#SPJ1

Models can be used to represent a process or show the composition of a material. For example, a model of an atom shows what matter is made out of and how it is composed. Scientists have been using models since ancient times to help explain the world around us. Models help you understand something that you cannot see or touch by making it visible or giving it a form that you can physically explore. In this case, the model lets scientists explore atoms without having to use an electron microscope. This method provides them with up-close images from different angles so they can learn about their properties in detail.

In the event that I was in this circumstance, my to begin with response would likely be one of stun and disillusionment, particularly in the event that I cherished my work and had fair begun to form progress in paying off my understudy credits.

In any case, I would too realize that usually an opportunity to investigate unused career paths and conceivably indeed discover a distant better; a much better, a higher, a stronger, an improved"an improved work or seek after other openings that will not have been accessible to me sometime recently.

In terms of finding modern work, I would begin by upgrading my continue and coming to out to my proficient arrange, counting previous colleagues and guides, to see in the event that they knew of any work openings or may give me any leads. I would moreover begin looking at worksheets and coming out to selection representatives to see in case there were any openings that coordinated my abilities and interface.

Whereas the prospect of having to discover an unused work and possibly move to an unused city or nation can be overwhelming, I would attempt to remain positive and see this as an opportunity to develop both actually and professionally. For case, I might consider seeking extra preparation or instruction in a modern field or industry, or investigating business and beginning my possess commerce.

By and large, whereas confronting the movement of my company to an outside nation would certainly be a challenging situation, I would attempt to approach it with an open intellect and see it as an opportunity to memorize, develop, and discover unused openings for myself. 

To know more about work-related issues refer to this :

https://brainly.com/question/29459072

#SPJ1

Answer:

0.136 J/(g°C)

Explanation:

We can use the formula for specific heat:

q = mcΔT

where q is the amount of heat added, m is the mass of the substance, c is the specific heat, and ΔT is the change in temperature.

Rearranging the formula, we get:

c = q / (m * ΔT)

Substituting the given values, we get:

c = 13.70 J / (21 g * 4.90°C)

c = 0.136 J/(g°C)

Therefore, the specific heat of platinum is 0.136 J/(g°C).


ALLEN

Answer:

Methyl ethyl ketone

Explanation:

Compound 'A' forms phenyl hydrazone, so it must be a carbonyl compound.  Since it also gives a negative iodoform test, so it can't be an aldehyde.  

'A' on reduction gives propane. So, it must be butanone.  Ketone reacts with phenyl hydrazine to form phenyl hydrazone but gives a negative iodoform test.

Thus, the correct answer is - Methyl ethyl ketone

A) Ethanol in water: Distillation.

B) Boiling the mixture of chloride crystals with water: Evaporation.

C) Pure water from muddy water: Filtration.

D) Sodium chloride in water: Evaporation or Crystallization.

E) Sodium carbonate in water: Filtration or Evaporation.

F) Chlorophyll from leaves: Extraction using a suitable solvent like ethanol.

G) Mixture of acetic acid and alcohol: Distillation.

H) Serum from blood sample: Centrifugation.

I) Kerosene from water: Separatory funnel or Decantation.

J) Ammonium chloride in sand: Sublimation or Dissolving in water and Filtration.

A) Ethanol in water: Distillation can be used to separate ethanol from water based on their different boiling points.

B) Boiling the mixture of chloride crystals with water: By heating the mixture, the water will evaporate, leaving behind the chloride crystals.

C) Pure water from muddy water: Filtration can be used to separate the solid particles (mud) from the water.

D) Sodium chloride in water: Evaporation can be used to separate sodium chloride from water by heating the mixture until the water evaporates, leaving behind the salt.

E) Sodium carbonate in water: Filtration can be used to separate solid sodium carbonate from water, similar to muddy water.

F) Chlorophyll from leaves: Extraction using a suitable solvent like ethanol or acetone can be used to separate chlorophyll from leaves.

G) Mixture of acetic acid and alcohol: Distillation can be used to separate the mixture based on their different boiling points.

H) Serum from blood sample: Centrifugation can be used to separate the serum, which is the liquid part of blood, from the solid components like cells.

I) Kerosene from water: Separatory funnel or decantation can be used to separate the immiscible liquids by pouring off the top layer (kerosene) from the bottom layer (water).

J) Ammonium chloride in sand: Sublimation can be used to separate ammonium chloride by heating the mixture, causing the ammonium chloride to vaporize and then condense back into solid form in a cooler region, leaving the sand behind.

Know more about Sublimation here:

https://brainly.com/question/16789108

#SPJ8

Answer: sand should both heat and cool faster than water

Explanation: water has a higher specific heat capacity than sand- meaning that it takes a lot of heat, or energy, to raise the temperature of water  one degree, whereas it takes comparatively little energy to change the temperature of sand by one degree

Answer:

As the Mentos candy sinks in the bottle, the candy causes the production of more and more carbon dioxide bubbles, and the rising bubbles react with carbon dioxide that is still dissolved in the soda to cause more carbon dioxide to be freed and create even more bubbles, resulting in the eruption

The amount of ice that can be melted by a given amount of heat depends on several factors, such as the mass of the ice, the specific heat capacity of ice, and the heat of fusion of ice (the amount of heat required to melt a given mass of ice at its melting point).

Assuming that the ice is at its melting point (0°C or 32°F) and that the heat is used solely to melt the ice (not to raise its temperature), we can use the heat of fusion of ice and the equation:

Q = m * L

where Q is the heat required to melt the ice, m is the mass of the ice, and L is the heat of fusion of ice (334 J/g).

To find the mass of ice that can be melted with 560 J of heat, we can rearrange the equation to solve for m:

m = Q / L

m = 560 J / 334 J/g

m = 1.67 g

Therefore, 560 joules of heat can melt 1.67 grams of ice at its melting point.

Answer:

The amount of ice that can be melted with a certain amount of heat depends on several factors such as the mass of the ice, the initial temperature of the ice, and the specific heat capacity of ice.

However, assuming we are dealing with a certain amount of ice with a specific mass and initial temperature, we can use the following formula:

Q = m × Lf

where Q is the amount of heat required to melt the ice, m is the mass of the ice, and Lf is the heat of fusion of ice, which is equal to 334 joules/gram.

To find the amount of ice that can be melted with 560 joules of heat, we need to rearrange the formula as:

m = Q ÷ Lf

Plugging in the values, we get:

m = 560 J ÷ 334 J/g ≈ 1.67 g

Therefore, 560 joules of heat can melt approximately 1.67 grams of ice.

Answer:

Half circle

Explanation:

because in the next day between 5O'clock the sun will rise then the moon will therefore created to be in a half moon

Answer:

the two elements are in the same period, with element R the first element in the period and element Q the last element

A rainbow is produced through a proces that includes refraction, reflection, and dispersion of  sunlight.

A rainbow is formed when sulinght is refracted and reflected by rain drops in the atmospher.

The sunlight is split into its component colors, which is why rainbows appear as having an array of colors. This is due to each color being bent by a different amount during refraction.

The colors of a rainbow are always in the same order, with red on the outside and violet on the inside.

Find more exercises on rainbows;

https://brainly.com/question/7965811

#SPJ1

If A van travels 2 kilometers due south, turns left, and then travels 1 kilometer. It takes a left turn again

and travels 2 kilometers. the displacement of the van is 1 kilometers.

Given,

A van travels 2 kilometers due south.

then turn left and travels 1 kilometer.

Then, the van takes left turn again and travels 2 kilometers.

As the displacement is the shortest distance traveled by the body. thus the displacement of the van is 1 kilometers.

The term "displacement" refers to a shift in an object's position. It is a vector quantity with a magnitude and direction. The symbol for it is an arrow pointing from the initial location to the ending place. For instance, if an object shifts from location A to position B, its position changes. Displacement is the term for this alteration in an object's position.

it is the shortest distance travelled by the body.

Learn more about displacement here :

brainly.com/question/4320329

#SPJ13

Answer:

1 Al(NO3)3 + 1 (NH4)3PO4 → 1 AlPO4 + 3 NH4NO3

Explanation:

To balance Al(NO3)3 + (NH4)3PO4 → AlPO4 + NH4NO3 you'll need to be sure to count all of the atoms on each side of the chemical equation.  Once you know how many of each type of atom you can only change the coefficients (the numbers in front of atoms or compounds) to balance the equation.

Important tips for balancing chemical equations:

a. The chemical equation for the electrolysis of water is:

2H2O(l) → 2H2(g) + O2(g)

b. The gas obtained at the anode during the electrolysis of water is oxygen (O2).

c. The volume of gas obtained at the anode is 0.002232 moles or approximately 0.05 L of oxygen gas.

a. The chemical equation for the electrolysis of water is:

2H2O(l) → 2H2(g) + O2(g)

b. The gas obtained at the anode during the electrolysis of water is oxygen (O2).

c. According to the balanced chemical equation, for every 2 moles of water (H2O) electrolyzed, 1 mole of oxygen gas (O2) is obtained. Since 1 mole of any gas occupies 22.4 L at standard temperature and pressure (STP), we can use the stoichiometry of the reaction to determine the volume of oxygen gas produced.

Given that 50 cm³ of gas is obtained at the anode, we need to convert this volume to liters:

50 cm³ = 50/1000 L = 0.05 L

Using the stoichiometric ratio of the balanced equation, we find that 2 moles of water produce 1 mole of oxygen gas. Therefore, 0.05 L of oxygen gas is equivalent to:

0.05 L × (1 mole/22.4 L) = 0.002232 moles

Thus, the volume of gas obtained at the anode is 0.002232 moles or approximately 0.05 L of oxygen gas.

for such more questions on gas

https://brainly.com/question/24719118

#SPJ8

The correct options that apply during a chemical change are:

A) One atom or more changes into atoms of another element.

B) New substances with different properties are formed.

C) Solids, liquids, or gases may form. Option A, B and C

During a chemical change, the arrangement of atoms in molecules is altered, resulting in the formation of new substances with different chemical properties. This is represented by option B. For example, when hydrogen gas (H₂) reacts with oxygen gas (O₂), a chemical change occurs, and water (H₂O) is formed. The properties of water, such as boiling point, density, and chemical reactivity, are distinct from those of its constituent elements.

Additionally, during a chemical change, atoms can rearrange to form molecules of different elements, as indicated in option A. For instance, during a nuclear reaction, such as radioactive decay, the nucleus of an atom can change, leading to the formation of atoms of different elements.

Option C is also correct. Depending on the specific reaction conditions, chemical changes can result in the formation of solids, liquids, or gases. For example, when a metal reacts with an acid, such as zinc with hydrochloric acid, a gas (hydrogen) is produced.

Options D and E are not universally applicable to all chemical changes. While some reactions may release heat energy (exothermic reactions), others may absorb heat energy (endothermic reactions). The requirement for heating or the release of heat depends on the specific reaction and its energy considerations.

In summary, during a chemical change, atoms can change into atoms of another element (A), new substances with different properties are formed (B), and solids, liquids, or gases may form (C).

For more such questions on  chemical change visit:

https://brainly.com/question/1222323

#SPJ8

Answer: 17.2 g/ml

Explanation:

Answer:

1.E25 it is the answer the answer to mass of 1×10^25 molecules of water​

Explanation:

this is just EXPLINATION find your answer using this

first divide the number of molecules by Avogadro's number 6.022*10^25

you will

l get no. of Moles of water

multiply the no. of Moles with mass of 1 Mole of water 18g per mole

if get answer you comment

you should try on your own you will understand better

The Independent variable  in the experiment is the type of covering material.

An experiment is the only way by which we are able to decode cause and effect relationships. Since science is empirical, every tentative explanation if a phenomenon is subjected to controlled tests. These controlled tests are what we call an experiment. There must be an independent variable and there must be  dependent variable. The independent variable is the variable that is manipulated in the experiment while the dependent variable is the variable that changes as we manipulate the independendent variable.

Now, if we look at the experiment, we can see that we are manipulating the type of covering in order to determine the impact that it has on the time that it taking for cooling to occur.

Hence the Independent variable  in the experiment is the type of covering material. The type of the covering was being changed and then the impact of the change of the covering material on the cooling time is studied.

Learn more about independent variable:https://brainly.com/question/1479694

#SPJ1

Answer:

E2

Explanation:

We can generally regard the bromocyclohexane as having a secondary carbon atom to Which the bromine atom is attached.

Tert-butoxide in tert-butanol favours the formation of an alkene (elimination) leading to the predominance of the less substituted alkene.

Generally, bulky bases such as tert-butoxide favours elimination by E2 mechanism over substitution.

The mechanism of Reaction A is E2 and also mechanism over substitution.

We can generally regard the Bromo cyclohexane as maintaining a secondary carbon atom to Which the bromine atom is connected.

Tert-butoxide in tert-butanol prefers the formation of an alkene (elimination) leading to the predominance of the undersized substituted alkene. Therefore, Commonly, bulky bases such as tert-butoxide favors elimination by the E2 mechanism over substitution.

Find more information about Bromine substituent here:

https://brainly.com/question/23192856

The specie that would have the longest bond is ON₂. Option A

We know that the length of a bond has to do with the order of the bond generally we know that the shorter the bond is, the greater the s character of the bond and the implication of that is that the bond would be much shorter and this would have to come into play here.

We now have to look at each of the bonds and keep the template at the back of our minds that the single bonds are longer than the double bonds and the double bonds are longer than the triple bonds.

In effect, the higher the bond order of the compound, the shorter then bond between the elements that we have in the compound would be from the basics of chemistry. Hence the options would show us that ON₂ has the longest bond here.

Learn more about bond length:https://brainly.com/question/14924352

#SPJ1

By using filtration, the sand and fine salt can be effectively separated based on their difference in particle size, providing a clean separation of the two components.

Filtration is a separation technique that takes advantage of the difference in particle size between sand and salt. It involves passing the mixture through a porous material, such as filter paper or a filter funnel, which allows the liquid (saltwater) and small salt particles to pass through while retaining the larger sand particles.

Here's how the filtration process can be carried out:

1. Set up a filter apparatus with a funnel and filter paper or a filter flask.

2. Place the mixture of sand and salt in a beaker or a flask.

3. Slowly pour the mixture into the filter paper or funnel, allowing the liquid (saltwater) to pass through while retaining the sand on the filter paper.

4. Once the liquid has passed through completely, the sand will be left behind on the filter paper or in the filter flask.

5. Carefully remove the sand from the filter paper or filter flask, and the saltwater solution can be collected separately.

For more such questions on filtration

https://brainly.com/question/29756050

#SPJ8