Explain why air is not a good conductor of heat

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:

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:

(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:

Thrust acts on the spacecraft and propels in the space.

1. The force created by the shuttle's engines in expelling the burning fuel produces an equal thrust in the opposite direction. This thrust acts on the spacecraft and propels in the space.

2. The thermosphere and the stratosphere are our hottest atmosphere layers because these two layers are present near the sun as compared to other layers of atmosphere.

3. When the meteors hit the atmosphere, meteors rub against air particles and create friction which is heating the meteors. The heat vaporizes most meteors, creating what we call shooting stars.

Learn more about atmosphere here: https://brainly.com/question/24925283

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!

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

I have 22.4 litre of methane gas

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:

in December, so winter is the season

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

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:

C. an ether

Explanation:

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:

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:

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!

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:  " 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!

_____________________

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:

A. Karl Landsteiner is the most likely for her to mention.

[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:

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

Answer:

insoluble substances

Explanation:

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:

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]

Answer:

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