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2 years ago

How many liters of carbon dioxide gas are in 18.6 moles of CO2 at STP?

Chemistry

1 answer:

PolarNik [594]2 years ago

5 0

Answer:

416.876

Explanation:

Uhmm I am so so very sorry if this is incorrect

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How does soil form bare rock???

RSB [31]

Weathering and erosion produce ever smaller rock particles which,

when mixed with dust and decayed organic matter over time ,

result in different types of soil .

[hope this helps]

3 0

2 years ago

Make an observation about the average height of the beanbag for each mass dropped. How does it compare with your calculated kine

Gekata [30.6K]

Answer:

the other person is correct

Explanation:

3 0

2 years ago

Choose all the answers that apply. Which of the following are essential elements are the most abundant on earth and are essentia

Lynna [10]

Answer:

you answers are sodium and chloride oxygen

Explanation:

sodium

chloride oxygen

8 0

2 years ago

Calculate the maximum KE and velocity of an electron from zinc by a 275nm photon

Dmitry [639]

Answer:

Kinetic energy: $6.024*10^{-20}$

Velocity: $3.64*10^{5}$

Explanation:

From the equations of the photo-electric effect,

We know:

$hv=hv_0+K.E$

Where,

1. $h$ is the Planck's constant which is $6.626*10^{-34}$

2. $v,v_0$ are the frequency of light emitted and threshold frequencies respectively.

3. $K.E$ is the kinetic energy of the electrons emitted.

By fact, we come to know that the threshold frequency of Zn is 300nm

And also $v=\frac{c}{d}$

Where ,

1. $c$ is the speed of light $=3*10^8$

2. $d$ is the wavelength.

Thus,

$\frac{hc}{d}=\frac{hc}{d_0}+K.E\\K.E=\frac{hc}{d}-\frac{hc}{d_0}\\K.E=hc*(\frac{1}{d}-\frac{1}{d_0})\\K.E=6.626*10^{-34}*3*10^8*(\frac{1}{275*10^{-9}}-\frac{1}{300*10^{-9}})\\K.E=6.024*10^{-20}kgm^2s^{-2}$

Now to find velocity:

$K.E=\frac{1}{2}mv^2\\v^2=1.324*10^{11}\\v=3.64*10^5$

8 0

3 years ago

Write the overall molecular equation for the reaction of hydroiodic acid ( HI ) and potassium hydroxide. Include physical states

Setler [38]

Answer:

HI(aq) + NaOH(aq)-------------> NaI(aq) + H2O(l)

Explanation:

The molecular reaction between hydroiodic acid and aqueous sodium hydroxide is shown above. It is a reaction of one mole of hydroiodic acid with one mole of sodium hydroxide to yield salt and water only. It is a neutralization reaction. Hydrogen iodide dissolves in water to produce hydronium ions which agrees with Arrhenius description of acids. Hydroiodic acid is a strong acid with PKa of -9.3

3 0

3 years ago