WORTH 18 POINTS! MY LIFE DEPENDS ON THIS ANSWER!!!
Which compound listed below is most likely to have to following properties?
-solid at room temperature
- high melting points
-solble in water
-conductive when dissolved
1.sodium chloride
2.carbon monoxide
3.nitrogen trifluoride
4.none of these compounds could have all of the properties listed

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Answer:

The core turns its hydrogen to helium and stops nuclear fusion which causes the outer shells of hydrogen to collapse.

Explanation:

This results in higher temperature and pressure which in turn causes the outer shells to expand and cool as a red giant.

Answer: 3.834

Explanation: 18*0.213

Answer:

0.30

Explanation:

Provided that the volume and pressure remains constant

[(Pressure of cyclopropane)/ (Pressure of Oxygen)] = [(no. Of moles of cyclopropane)/(no. Of moles of Oxygen)]

Pressure of cyclopropane= 170. torr

Pressure of Oxygen= 570. torr

If we substitute the values

[(no. Of moles of cyclopropane)/(no. Of moles of Oxygen)] = 170/570

[(no. Of moles of cyclopropane)/(no. Of moles of Oxygen)] = 0.30

Hence, the ratio of the moles of oxygen to the moles of cyclopropane in the mixture is 0.30

Answer:

439.7nm

Explanation:

Energy of a quantum can be calculated using below formula

E=hv...........eqn(1)

But v=λ/ c .........eqn(2)

If we substitute eqn(2) into eqn(1) we have

E= hc/(λ)

Where E= energy

h= Plank's constant= 6.62607004 × 10-34 m2 kg / s

c= speed of light

c= 2.998 × 10^8 m/s

λ= wavelength= ?

But the energy was given in Kj , it must be converted to Kj/ photon for unit consistency.

Energy E= 272 kJ/mol × 1mol/6.02× 10^23

Energy= 451.83× 10^-24 Kj/ photon

E= hc/(λ)...........eqn(1)

If we make λ subject of the formula

λ= hc/E

Then substitute the values we have

λ= [(6.626 × 10^-34) × (2.998 × 10^8)]/451.83× 10^-24

λ=(0.00043965) × (1Kj/1000J) × (10^9nm/1m)

λ=439.7nm

Hence, the longest wavelength of radiation with enough energy to break carbon-sulfur bonds is 439.7nm

The specific heat : c = 0.306 J/g K

Given

Heat = 35.2 J

Mass = 16 g

Temperature difference : 7.2 K =

Required

The specific heat

Solution

Heat can be calculated using the formula:  

Q = mc∆T  

Q = heat, J  

m = mass, g  

c = specific heat, joules / g ° C  

∆T = temperature difference, ° C / K  

Input the value :

c = Q / m.∆T  

c = 35.2 / 16 x 7.2

c = 0.306 J/g K

Answer:

Concave Lenses Are for the Nearsighted, Convex for the Farsighted. Concave lenses are used in eyeglasses that correct nearsightedness.

Explanation:

the answer Is A hope it helps

Answer/Explanation:

The rate of a reaction depends on the rate constant and concentration the rate constant according to Arrhenius is as u stated. An increase in temperature increases the rate constant and hence the rate. An increase in concentration increases the rate but not the rate constant.

Answer:

56/hr

Explanation:

Each of the following organs had a role in excretion, except for the Heart. Therefore, the correct option is option C.

Excretion seems to be the process throughout which an organism eliminates metabolic waste. In vertebrates, this is largely done by that of the skin, kidneys, especially lungs. When a substance is secreted, this could perform certain roles once it leaves the cell. Excretion is required by all forms of life.

Animals, for example, use the urethra, a member of the excretory, to evacuate urine. In unicellular organisms, waste products are ejected quickly via the cell surface. During biological functions, such as cellular respiration, a variety of chemical changes occur in the body. Each of the following organs had a role in excretion, except for the Heart.

Therefore, the correct option is option C.

To know more about excretion, here:

https://brainly.com/question/9382811

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Answer:

288g

Explanation:

Given parameters:

Number of moles of H₂O  = 16moles

Unknown:

Mass of the water = ?

Solution:

To solve this problem, first find the molar mass of H₂O;

     Molar mass of H₂O = 2(1) + 16  = 18g/mol

Mass of H₂O = number of moles x molar mass

                      =  16 x 18

                      = 288g

Answer:

Earth Scientists Use Fractals To Measure And Predict Natural Disasters.

Explanation:

Answer:they can use fractals

Explanation:

Answer:

Carboxylic acid

Explanation:

Asprin is a drug that contains the carboxylic acid functional group (R-COOH), ester functional group (R-O-CO-R') and the aromatic group (benzene ring).

When we take in aspirin, it becomes salicylic acid. This metabolite irreversibly inhibits the enzyme cyclooxygenase. Hence the the production of protective prostaglandins is blocked causing inflammation and pain.

Answer: A: Has little to no reaction; might turn slightly red in color. B: The liquid grows darker in color to a more reddish tone.

Explanation: I didn’t have the necessary materials to complete the experiment so the teacher told me and I put it in my own words.

Answer:

Simple carbs break down easier and contain sugars. Complex carbs contain starch and fiber.

Explanation:

Answer Image result for What is the difference between the structure of simple and complex carbohydrates?

Simple vs Complex Carbs. Carbohydrates are sugars that come in 2 main forms – simple and complex. This is also referred to as simple sugars and starches. The difference between a simple and complex carb is in how quickly it is digested and absorbed – as well as it's chemical structure.

Answer:

Maybe (C)

...............

Answer:

A. plates move in faster

Explanation:

The convergence is a process where both the plates tend to move in closer as one plate overrides the other and the formation of a Himalayas is described as a range that formed by the movement of the sediments that were bought by the Tethys sea. By the collision of the Indian and the Eurasian plate.

i hope this helps

Explanation:

kinetic energy Increases due to gravity. A rock being pushed down a hill increases in speed, due to gravity, what goes up must come down....

Answer:

369 ml

Explanation:

Mass of Aluminium (Al) = 20 g

Molar concentration =  2.007M

Molar concentration = Number of moles / Volume

The relationship between mass and number of moles;

Number of moles = Mass / Molar mass

Number of moles = 20 / 27 = 0.741 mol

2.007  = 0.741  / Volume

Volume = 0.741 / 2.007 = 0.369 L

converting to millilitres by multiplying by 1000

Volume = 0.369 * 1000 = 369 ml

Answer:

1.57 × 10^-4

one point five seven times ten to the power of negative four

Answer:

cell,tissue,organ,organ system,organism

Answer:

The answer is: ATP

(Im pretty sure)

Answer:

11.3 g.

Explanation:

Hello there!

In this case, since the combustion of butane is:

[tex]C_4H_{10}+\frac{13}{2} O_2\rightarrow 4CO_2+5H_2O[/tex]

Thus, since there is a 1:5 mole ratio between butane and water, we obtain the following mass of water:

[tex]m_{H_2O}=7.26gC_4H_{10}*\frac{1molC_4H_{10}}{58.14gC_4H_{10}}*\frac{5molH_2O}{1molC_4H_{10}} *\frac{18.02gH_2O}{1molH_2O}[/tex]

Therefore, the resulting mass of water is:

[tex]m_{H_2O}=11.3gH_2O[/tex]

Best regards!

Answer:

1.34 * 10^-7 M

Explanation:

The Ksp of lead II chromate is 1.8 x 10^-14

So, we have that;

PbCrO4(s) -----> Pb^2+(aq) + CrO4^2-(aq)

                             s                  s

Where s = molar concentration of Pb^2+(aq) and  CrO4^2-(aq)

and;

[Pb^2+] = [CrO4^2-]

This implies that Ksp = s^2

s = √Ksp

s = √1.8 x 10^-14

s = 1.34 * 10^-7 M

Answer:

inonic bonds with cavalent bonds

Explanation:

ionic bonds