Help me with this. I dont even know what this compound is...​

Answer:

The rate at which the air temperature changes with height in the atmosphere surrounding a cloud or a rising parcel of air. The overall average rate is a decrease of about 6.5°C/km, but the rate varies greatly in different regions of the world, in different airstreams, and at different seasons of the year.

The number of  moles of the gas is 0.016 moles

We know that in the airbag, nitrogen gas is obtained by the decomposition of sodium azide as follows; 2NaN3 -----> 2Na + 3N2

Since it is under ideal conditions;

P = 1 atm

V = 1 L

T = 495°C  or 768 K

n = ?

R = 0.082 atm LK-1mol-1

From;

PV= nRT

n = PV/RT

n = 1 atm *  1 L/ 0.082 atm LK-1mol-1 *  768 K

n = 0.016 moles

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Answer:

Crude oil is a mixture of comparatively volatile liquid hydrocarbons (compounds composed mainly of hydrogen and carbon), though it also contains some nitrogen, sulfur, and oxygen. Those elements form a large variety of complex molecular structures, some of which cannot be readily identified.

Answer:

The label on the X-axis is Heat Supplied or Absorbed

The label on the Y-axis is Temperature

Explanation:

The given graph is the heating curve of a substance as it is absorbs heat (increase in the x-axis) and have an increase in temperature (increase in the y-axis) between its different phases, from A to E

Therefore;

The label on the X-axis should be Heat Supplied or Absorbed

The label on the Y-axis should be Temperature

An appropriate state of phase 'A' is the solid phase of the substance where the temperature of the substance increases as heat is supplied without the substance changing into a liquid

Stage 'B' is the melting stage, when the substance transforms from solid to liquid as heat is applied, without an increase in temperature, which is seen by the horizontal line of stage 'B'

At stage 'C', the substance which is entirely liquid continues to absorb heat (moving to the right), while the temperature rises

At stage 'D', the substance in the liquid state continues to absorb heat (moving to the right), but rather than increase in its temperature, the substance transforms to the gaseous phase, which is phase 'E'

At phase 'E', the substance continue to absorb heat without changing state and therefore its temperature increases

The phases 'B', and 'D', where there is no increase in temperature as heat is added (progression to the right) are the regions where we have the latent heat of fusion and evaporation respectively.

Answer:

A. it's H20

B. mH2O=17g

C. m Al(OH)3= 39g

m AlS3 = 6.15

Answer:

A lot of heat

Explanation:

Answer:

The waves are behaving this way due to the simultaneous water drops landing in the water.

Explanation:

because ima smart baddie (≧▽≦)

Answer:

Surface mining (also known as "strip mining") has the potential to significantly erode soil fertility, pollute waters, deplete underground water sources, scar or altar the landscape, damage roads, houses, and other buildings, and kill wildlife.

Answer:

it should be calcium hydrate

Answer:

It is used to make black gunpowder and also to make sulfuric acid which is used in batteries, fertilizers, etc...

Explanation:

It is used to make black gunpowder and also to make sulfuric acid which is used in batteries, fertilizers, etc..

Answer:

c

Explanation:

Answer:

35.20

Explanation:

I got it right when I answered it

Answer:

The much higher power density offered by lithium ion batteries is a distinct advantage. Electric vehicles also need a battery technology that has a high energy density. ... Lithium ion cells is that their rate of self-discharge is much lower than that of other rechargeable cells such as Ni-Cad and NiMH forms.

Put this into your own words or teachers will make you redo it

Answer:

a

Explanation:

Answer:

Reaction with water: Aluminum oxide is insoluble in water and does not react like sodium oxide and magnesium oxide.

Answer:

The pressure of O₂ is 0.8 atm.

Explanation:

The pressure exerted by a particular gas in a mixture is known as its partial pressure. So, Dalton's law states that the total pressure of a gas mixture is equal to the sum of the pressures that each gas would exert if it were alone:

PT = PA + PB

This relationship is due to the assumption that there are no attractive forces between the gases.

In this case:

PT=Pnitrogen + Pcarbon dioxide + Pother gases

Being:

and replacing:

PT= 593.4 mmHg + 3 mmHg + 7.1 mmHg

you get:

PT= 603.5 mmHg

Being 760 mmHg= 1 atm, you get:

PT= 603.5 mmHg= 0.8 atm

The pressure of O₂ is 0.8 atm.

Answer:

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Explanation:

Answer: D

Explanation:

The car will move to the left because Sam is implying a grater force (3 N < 6 N) but it is traveling at a constant speed because there is still a force being acted upon it. <3

The result of applying forces to a toy car is required.

Option D is correct.

Force applied by Bobby is 3 N to the right

Force applied by Sam is 6 N to the left

Right is taken as positive and left is taken as negative.

m = Mass of toy

a = Acceleration

Net force applied to the toy

[tex]F=3-6\\\Rightarrow F=-3\ \text{N}\\\Rightarrow ma=-3\\\Rightarrow a=\dfrac{-3}{m}[/tex]

So, the toy will move left with a constant acceleration.

Constant acceleration means its speed will be increasing.

So, option D is correct.

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Answer:

Argon

Explanation:

Argon because chlorine is atomic number 17 and potassium is atomic number 19

Argon is between them thank you

Answer:

50g

Explanation:

moalr mass of CaCO3= 40g/mol+ 12g/mol+(16g/mol*3)

                                   =52g/mol+48g/mol

                                   =100g/mol

1 mol= 100g

0.5mol=x

by cross multiplication,

0.5*100gmol=x mol

x=50g

Answer:

467

Explanation:

ncl2 = 454.4x1/(71.0 g/mol) = 6.40 mols cl2

6.40 mols cl2 x 2molsHCL/1moleCL2 x 36.5g/1moleHCL = 467 g HCL

One mole of chlorine gas gives two moles of hydrogen chloride. Thus, 454.4 g of chlorine gas will give 467.2 g of hydrogen chloride.

Hydrogen chloride is a covalent compound formed by the electron sharing of chlorine and hydrogen. It normally exists in gaseous state and can be liquified to the acidic form.

As per the balanced reaction one mole of chlorine gas gives two moles of hydrogen chloride gas. The molecular mass of chlorine gas is 71 g/mol. The molar mass of HCl is 36.5 g/mol.

Hence, 71 g of chlorine gas gives 73 g of HCl. Then, the mass of HCl produced from 454.4 g of chlorine gas is calculated as follows:

mass of HCl = (454.4 × 73) / 71

                     = 467.2 g.

Therefore, the mass of HCl produced from 454.4 g of chlorine gas is 467.2 g.

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Answer:

No they form nitrogen oxide which can be poisonous to some species but depending on the amount of nitrogen it can be harmful to everything living. Such as if you put it with a plant that had low nitrogen levels then there would be no carbon dioxide to filter.

Explanation:

Answer:

The energy required is 8660.96 J.

Explanation:

Calorimetry is the measurement and calculation of the amounts of heat exchanged by a body or a system.

Sensible heat is the amount of heat that a body absorbs or releases without any changes in its physical state (phase change). This heat is given by the expression:

Q = c * m * ΔT

where Q is the heat exchanged by a body of mass m, made up of a specific heat substance c and where ΔT is the temperature variation.

In this case, you know:

Replacing:

Q= 4.18 [tex]\frac{J}{g*C}[/tex] *74 g* 28 C

Solving:

Q= 8660.96 J

The energy required is 8660.96 J.

Answer: Gene Characteristic. (They are usually made up of more than one gene).

Answer:

temperature a measurement of the average amount of energy PER UNIT OF STUFF

Heat Energy is TOTAL ENERGY IN THE STUFF

So, that's why the difference. If you have two things at the same temperature, then any one mole (which is the same as how many molecules or atoms it takes to make up the molecular weight of something in grams.. so one mole of Hydrogen weighs 1 gram, 1 mole of helium weighs 2 grams, 1 mole of Gold weight 196 grams) of the stuff will have the same amount of energy as one mole of the other stuff. If you measure by total mass though, then you realize that there are more water molecules than gold ones in the same volume of stuff, and heat is about volume and molecular density, not mass.

This is why some Stirling engine folks who have made solar plants use Helium as the working gas.. it contains a huge amount of heat for its volume (also because it is very compressible)

So.. Delta Q goes with moles, not mass.

Answer:

H₃P phosphidic acid

Explanation:

The Trihydrogen monophosphide, as stated in the exercise, can act as an acid. This is pretty similar to the case of hydrogen chloride, which is a gas but it can also be an acid, in this case, chloridic acid.

In the case of trihydrogen phosphide, we can write it molecular formula which is:

H₃P

Now, this is a binary compound because its composed of only two elements, in this case, hydrogen and phosphide. To name binary acid, we need to name the non metal with the sufije idic, and then, the word acid.

Following this simple rule, the trihydrogen phosphide would be, as acid:

H₃P: phosphidic acid

Hope this helps

Answer:

2PH3 = P2 +3H2

Explanation: