Which orbital diagram represents
helium (atomic number = 2)?

[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]

Answer:

C = q / m x dT

Explanation:

By definition, specific heat, C = heat absorbed, q divided by mass, m and change in temperature, dT

So C = q / m x dT

Answer:

The specific heat capacity of a material is the energy required to raise one kilogram (kg) of the material by one degree Celsius (°C)

Formula:

energy (J) = mass (kg) * specific heat capacity (J/kg°C ) * change in temperature

required answer:

using the formula:

C =   [tex]\frac{102}{12.5*(55-22)}[/tex]

C = 0.2473 J/kg°C

             ↑

This is the specific heat capacity of copper

Answer:

insoluble substances

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:

(80.0, 20.0) The statement states that 80% of the compound is carbon. To acheive the amount of carbon in a 100 g sample, you need to multiply the weight of the sample by the percentage of carbon in the compound. Recall that 80%=80/100=.8 .8*100g=80g of carbon. The same process goes for the hydrogen. .2*100g=20g hydrogen.  Explanation:

I have 22.4 litre of methane gas

Answer:

you can also get oxygen from the mouth but you get more from the nose so i would chose nose

Answer:

The dispersed particles of lyophobic colloidal systems have the same kind of electric charge. Particles with like charge repel each other and their mutual repulsion prevents them from joining together and settling out. The accumulation of similar kind of charges on the suspended particles holds them part and thus stabilizes the system.

Explanation:

I am assuming you are talking about their phase and in that case, they are mostly solid except for mercury and bromine.

Hope that helps!

The solute in this case would be sodium chloride and sucrose.

Solutes are substances capable of dissolving in solvents to give homogenous mixtures known as solutions.

In this case, both sodium chloride and sucrose were added to water - water is acting as the solvent.

Sodium chloride is soluble in water and so also is sucrose.

Thus, a homogenous mixture of sodium chloride and sucrose would result.

More on solutes can be found here: https://brainly.com/question/7932885

Answer:

Sound waves are longitudinal waves

Water waves are transverse waves.

Hope this helps!

The mutation is a helpful mutation since it helps bacteria to survive and reproduce.

Answer:

in December, so winter is the season

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.

Learn more about  Ideal Gas Law:

https://brainly.com/question/4147359?referrer=searchResults

Answer:

its A and D

Explanation:

Answer: Neutral

Explanation: This is because, in the ph scale, greater than 7 indicates base or alkaline (basic), while less than 7 indicates that it is acidic.

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.

To find more about Energy, refer the link below:

brainly.com/question/ 8630757

#SPJ2

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

Answer:

1. B

2.C

3.The further out and the closer the the equator a place on Earth is the warmer it is due to the fact that the sun directly hits countries on the equator and takes in heat faster then the north and south pole. Countries on more of a curve are colder due to the fact they are more curved and it is harder for the heat to be taken in at a curve.

B is center point line passing through earth and it's placed right infront of sun so b would have highest temperature

#2

A and C both are poles so at a and c least sun light can reach hence lowest temperature.

#3

the rocky planet was exposed to harsh and forceful solar winds, which blew the Martian atmosphere away.

Another option for thickening the atmosphere of Mars, and, in turn, raising the temperature of the planet, would be to set up solar-powered, greenhouse-gas producing factories.

Answer:  " PHBALANCE " .

_____________________

Explanation:
_____________________
The pH scale is logarithmic and indicates how acid or how basic a substance is.
 ph balance ; as one word in a crossword puzzle,

with 9 letters ; P-H-B-A-L-A-N-C-E ; amounts to exactly 9 (nine) letters ;

And starts with a "P" ;

    the 3rd letter is "B" .

_____________________

Source:  Self-perception and tuition.

Hope this helps!  Please let me know if the answer is correct; or if it makes sense!

_____________________

To convert it in Kg/m³ divide by 1000 and multiple with 10⁶

[tex]Density = 0.2 \: \times \frac {{10}^{6} }{10 {}^{3} } = 0.2 \times {10}^{3} \\ Density = 200 \: kg \: m {}^{ - 3} [/tex]

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

For more information on Earth visit

https://brainly.com/question/24878669

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.

Hope this helps!

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:

The London dispersion force is a temporary attractive force that results when the electrons in two nearby atoms of two different molecules occupy positions that make the atoms form temporary dipoles (positive or negative charge).

Explanation: