Explain why hydrogen, not sodium, is formed at the cathode.

Answer:

i do not know

Explanation:

Answer:

answer in picture

Explanation:

When temperature increases, the air molecules gets energy. The air molecule starts moving randomly. The pressure is increased in the tire.

Entropy is defined as a measure of randomness or disorder of a system. disorder increases over time. Energy disperses.

In tire, it is filled with air molecules, its nothing but oxygen, nitrogen, sulpurdioxide, carbondioxide etc. when the outer side temperature increases, tire starts heating.

Heat is nothing but one type of energy, energy will transfer in to molecule. Molecule starts vibrating, hitting to walls this will increases the temperature and pressure increases.

Thus, if outer temperature increases. Pressure also increases.

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Answer:

in December, so winter is the season

Precautions need to be observed when using methanol and a flame are wearing a mask and gloves, performing experiment from a distance and in a careful and safe way.

Methanol burns with a clear, clean flame which is dangerous if not carried properly. Wearing a mask and gloves during experiment in order to safe the hands and face from burning.

Performing experiment from a distance and in a carful way avoids the chances of accident so we can conclude that wearing a mask and gloves, performing experiment from a distance and in a careful and safe way are the precautions are needed.

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Answer:

Biochemical compounds make up the cells and other structure of organism and carry out life processes.Carbon is the basic of all biochemical compounds so carbon carried life process on the earth

It means that a person has the ability to describe, explain, and predict natural phenomena. Scientific literacy entails being able to read with understanding articles about science in the popular press and to engage in social conversation about the validity of the conclusions. Scientific literacy implies that a person can identify scientific issues underlying national and local decisions and express positions that are scientifically and technologically informed. A literate citizen should be able to evaluate the quality of scientific information on the basis of its source and the methods used to generate it. Scientific literacy also implies the capacity to pose and evaluate arguments based on evidence and to apply conclusions from such arguments appropriately.

hope this helps and sorry if this is wrong

Answer:

no not technically most of the time it is just their miles and maybe their esophagus, and also your stomach if you're lucky. Most of the time the ice cream isn't cold all the way down it is warmed up or by your core body temperature. The only way your full body would be cold when you eat ice creams if you are already cold in your and your core temperature has dropped.

Answer:

16

Explanation:

the number a grams is 16

Answer:

Roughly 471.96589800000004. Hope i helped :D

Explanation:

Answer:

Amino acid

Explanation:

When you eat food the body's digestive system breaks down the protein into the individual amino acids, which are absorbed and used by cells to build other proteins and a few other macromolecules, such as DNA

Answer:

transpiration

Explanation:

Transpiration is when water moves up a plant stem, because water has surface tension due to cohesion.

In water, the H is slightly positive and the O2 are both slightly negative. This creates bonds between the H and O of another molecule. This causes water to be sticky, and when water moves up a plant, other molecules are also pulled up.

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Answer:

Sound waves are longitudinal waves

Water waves are transverse waves.

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Volume is the amount of space occupied by any object or substance in a given defined space it can be expressed in litres. The volume of the balloon is 5.8 L.

Volume is a defined space occupied by any substance in a confined place with some amount of weight or mass.

The volume of the balloon can be estimated by the ideal gas equation:

[tex]\rm PV = n RT[/tex]

Where,

Substituting values in the equation:

[tex]\begin{aligned} \rm V &= \rm \dfrac{nRT}{P}\\\\&= \dfrac{(0.24)(0.082)(308)}{1.05}\\\\&= 5.8\;\rm L\end{aligned}[/tex]

Therefore, the volume of the balloon is 5.8 L.

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Answer:

➢There are different ways to trigger the conversion of diamond to graphite, for instance by simply heating the diamond under exclusion of oxygen or even with an aimed mechanical stroke.

Explanation:

hope it will help you have a great day bye and Mark brainlist if the answer is correct

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Answer:

video and through an algebriac expression

Explanation:

Explanation:

from definition of density we have

density=mass/volume

and density=55 mass=220g

volume=220/55

volume=4ml

or 4×10^-3l

Answer:

4cm³

Explanation:

220.0g is our mass

55.0g/cm³ is our density

220g/55g/cm³

= 4cm³

Gesso is a white paint blend that comprises pigment, chalk and gypsum. It is a medium utilised for surface preparation and as a primer for a painting.

Gesso is widely utilized for preparing surfaces and as primers by painters. They were used by painters and artists earlier to make canvas, boards for painting purposes.

It was first formulated by chalk powder dust and pigment derived from the animal skin. They are widely used because of their adhering properties.

The use of the gesso makes the paint adhere to the canvas and the board surfaces and also, makes the surface textured.

Therefore, option b. it is used for preparing the surface is correct.

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Answer:

b on edge

Explanation:

Answer:

The  percent composition of glucose  in the  mixture  is 85 % (Answer E)

Explanation:

"percent  composition of glucose = (mass of glucose /  mass  of the mixture) x 100

Step 1:  calculate the mass  of glucose ( C6H12O6)

mass of glucose =  moles of glucose  x  molar mass  of glucose

molar  mass of C6H12O6  = [( 12 x6) + ( 1  x12) + ( 16 x6)= 180 g/mol

mass  is therefore= 1.3 moles x 180g/mol = 234  grams

Step 2: calculate  the percent composition

= mass of glucose /mass of mixture x 100

= 234 g/276 g  x 100  = 85 %(answer E)"

Answer: the answer is E

Explanation: plato users

Considering the definition of physical property, a physical property is a characteristic that describes an object or substance and can be measured without affecting the composition or identity of the substance.

A physical property is a characteristic that describes an object or substance and is based primarily on the structure of the object, substance or matter, which is visible and measurable.

That is, physical properties are those that can be measured without affecting the composition or identity of the substance. In this way, the physical properties of matter are the visible and characteristic characteristics of a substance that can be measured and do not produce new chemical substances.

Some examples of physical properties are: color, shape, size, density, melting point and boiling point.

A physical property is a characteristic that describes an object or substance and can be measured without affecting the composition or identity of the substance.

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Explanation:

Metamorphic rocks form when rocks are subjected to high heat, high pressure, hot mineral-rich fluids or, more commonly, some combination of these factors. Conditions like these are found deep within the Earth or where tectonic plates meet.

I have 22.4 litre of methane gas

Answer:

A process during which chemical bonds between atoms are broken and new ones are formed, producing one or more substances.

Moles are the amount of substance that contains as many particles.

Explanation:

A chemical reaction is when a chemical change occurs for example when a nail comes into contact with air and is then exposed to air it begins to rust. It forms a red-brown substance which changes the chemical composition of the original compound.

Examples of chemical reactions:

Combustion

Oxidation (rusting)

Cooking an egg

Photosynthesis

Digestion

Fireworks

Paper Burnin

The mole is the amount of substance that contains as many particles (molecules, ions or atoms) as there are in 12g of carbon.

1 mol is the amount of substance that contains the same number of particles as there are atoms in 12.0 g of carbon-12 and that number is referred to as Avogardo's constant (6.022 x [tex]10^{23}[/tex]).

The bond length and energy of the bond formed between hydrogen (H) and astatine (At) would change if the bond order increases or decreases or when its potential energy is at the lowest.

Bond length is also referred to as bond distance and it can be defined as an equilibrium distance between the nuclei of two (2) covalently bonded atoms in a molecule.

Bond energy can be defined as the amount of chemical energy that is required to break one mole of a given chemical bond.

In Chemistry, the bond length and energy of a molecule is typically determined by the following:

In conclusion, you can predict that the bond length and energy of the bond formed between hydrogen (H) and astatine (At) would change if the bond order increases or decreases or when its potential energy is at the lowest.

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Any capacity for doing work is called energy. It is a quantity and can be of various forms. Energy is getting transferred from arm muscles to the ball.

Energy is the work done by the object to perform any given task and is dependent on the factors like the distance and the force applied.

When Abin lifts the bowling ball then the object is displaced from its original position and some amount of force is applied by the arm muscles.

The chemical energy stored in the arm of Abin is a form of energy and gets transferred to the ball from the muscles so it can be lifted.

Therefore, option B. energy is transferred from the arms muscles to the ball.

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Answer:

B. It is being transferred from his arm muscles to the ball.

Explanation:

got it right.

Considering the definition of ideal gas and gas laws, The Ideal Gas Law not apply and gases are considering real under conditions of high pressure low pressure.

An ideal gas is a theoretical gas that is considered to be composed of randomly moving point particles that do not interact with each other.

In other words, an ideal gas is defined as one in which all collisions between atoms or molecules are perfectly elastic and in which there are no intermolecular attractive forces, so they do not interact with each other.

Gases in general are ideal when they are at high temperatures and low pressures.

On the other hand, the gas laws are a set of chemical and physical laws that allow us to determine the behavior of gases in a closed system. The parameters evaluated in these laws are pressure, volume, temperature, and moles.

Summary

The Ideal Gas Law not apply and gases are considering real under conditions of high pressure low pressure.

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Answer:

its A and D

Explanation:

We have that the source that does not produce Heat is

Drilling wells to bring hot water to the surface

Option D

Generally, Heat in this context speaks to a hot or high temperature of molecules from the earth body

Therefore,Gathering lava from volcanoes to boil water,Pumping hot spring water into homes and businesses are few example of ways the earth generate natural heat Whilst drilling wells to bring hot water to the surface is not an actual thing as water drilled out is not hot

Therefore, the source that does not produce Heat is

Drilling wells to bring hot water to the surface

Option D

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Based on the stoichiometry of the reaction, 15.27 g of Sulfur are required to produce 42.0 g of FeS.

A stoichiometry of a reaction shows the ratio in which reactant molecules will combine to form products.

The balanced equation of the reaction is given below:

Fe + S -----> FeS

Molar mass of sulfur = 32 g

molar mass of iron = 56 g

molar mass of FeS = 88 g

32 g of sulfur produces 88 g of FeS

mass of sulfur that will produce 42.0 g of FeS = 32/88 * 42 = 15.27 g

Therefore, 15.27 g of Sulfur are required to produce 42.0 g of FeS.

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[tex] \text{Given, Concentration of HCl}= 10 {}^{ - 6} M[/tex]

[tex] \text{After Dilution conc. of HCl =} \frac{10 {}^{ - 6} }{100} = {10}^{ - 8}M [/tex]

[tex] \therefore \text{pH = - log[H}^{ + } ][/tex]

[tex] \therefore \text{ pH }= - \log [{} {10}^{ - 8}] = 8[/tex]

[tex] \text{But} \: \text{This} \: \text{Is} \: \text{Not True Because} \\ \text{ An Acidic Solution Cannot have} \text{pH Greater than 7.} \\ \text{ In this case} [ {H}^{ + } ] \text{ Ions Of Water Molecule} \\ \: \text {Cannot Be Neglected.}[/tex]

[tex] {[H}^{ + } ] = {[H}^{ + } ] _{HCl} +{ [H + }^{ } ] _{H_2 O}[/tex]

[tex][H {}^{ + } ][OH {}^{ - } ] = 10 {}^{ - 14} \\ [H {}^{ + } ] = {10}^{ - 7} \\ [H {}^{ + } ] \text{total} = {10}^{ - 8} + {10}^{ - 7} \\ = {10}^{ - 8} (1 + 10) \\ = 11 \times {10}^{ - 8} [/tex]

[tex] \text{Now from, pH} = - \text{log}[H {}^{ + } ] \\ = \text{ - log}(11 \times {10}^{ - 8} ) \\ = - \text{ log}11 - \text{ log} {10}^{ - 8} \\ = 6.957[/tex]