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4 years ago

What is the main cause of an earthquake

Chemistry

2 answers:

Natali5045456 [20]4 years ago

4 0

Answer:

I thinks it's stress caused by plate movement hope this helps

sergij07 [2.7K]4 years ago

3 0

Answer: stress caused by plate movement

Explanation:

Earthquakes are caused by the movement of tectonic plates, the different types of movements being divergent, convergent and transform.

Divergent boundaries: where new crust is generated as the plates pull away from each other.

Convergent boundaries: where crust is destroyed as one plate dives under another.

Transform boundaries: where crust is neither produced nor destroyed as the plates slide horizontally past each other.

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1. How many hydrogen atoms are in 5 molecules of isopropyl alcohol, C3H7O

Gekata [30.6K]

1. c. 35
2. d. 1.26 x 10^24 molecules
3. d. 303.6 g

8 0

3 years ago

Read 2 more answers

If the detector is capturing 3.3×108 photons per second at this wavelength, what is the total energy of the photons detected in

Reil [10]

Answer:

The total energy of the photons detected in one hour is 7.04*10⁻¹¹ J

Explanation:

The energy carried by electromagnetic radiation is displaced by waves. This energy is not continuous, but is transmitted grouped into small "quanta" of energy called photons. The energy (E) carried by electromagnetic radiation can be measured in Joules (J). Frequency (ν or f) is the number of times a wave oscillates in one second and is measured in cycles / second or hertz (Hz). The frequency is directly proportional to the energy carried by a radiation, according to the equation: E = h.f, (where h is the Planck constant = 6.63 · 10⁻³⁴ J / s).

Wavelength is the minimum distance between two successive points on the wave that are in the same state of vibration. it is expressed in units of length (m). In light and other electromagnetic waves that propagate at the speed of light (c), the frequency would be equal to the speed of light (≈ 3 × 10⁸ m / s) between the wavelength :

$f=\frac{speed of light}{wavelength}$

So:

$E=\frac{h*speed of light}{wavelength}$

In this case, the wavelength is 3.35mm=3.35*10⁻³m and the energy per photon is:

$E=\frac{6.63*10^{-34}*3*10^{8}}{3.35*10^{-3} }$

E=5.93*10⁻²³ $\frac{J}{proton}$

The detector is capturing 3.3*10⁸ photons per second. So, in 1 hour:

$E=5.93*10^{-23} \frac{J}{proton} *3.3*10^{8} \frac{proton}{s} *\frac{60}{1} \frac{s}{minute} *\frac{60}{1} \frac{minute}{hr}$

E=7.04*10⁻¹¹ $\frac{J}{hr}$

The total energy of the photons detected in one hour is 7.04*10⁻¹¹ J

3 0

3 years ago

Yield for this reaction? Reaction: N2(g) + 3 H2(g) → 2 NH3 (g)

andriy [413]

Answer:

Yes, yield.

Explanation:

N2(g) + 3 H2(g) → 2 NH3 (g) balanced equation

First, find limiting reactant:

Moles H2 = 1.83 g x 1 mole/2 g = 0.915 moles H2

Moles N2 = 9.84 g N2 x 1 mole/28 g = 0.351 moles N2

The mole ratio of H2: N2 is 3:1, so H2 is limiting (0.915 is less than 3 x 0.351)

Theoretical yield of NH3 = 0.915 mol H2 x 2 mol NH3/3 mol H2 = 0.61 moles NH3

6 0

3 years ago

Estimate the heat of neutralization of H3PO4 in kJ/mol given these data: Heat transferred = 2.5 x 102 J Moles of H3PO4 = 1.4 x 1

OlgaM077 [116]

Below are the steps to get the answers:

1.) write out the balance equation 3NaOh+H3PO4->Na3PO4+3H2O

2.) You are given everything needed to calculate q=heat transfer=2.2*10^2, H3PO4 moles= 1.5*10^-3, NaOH moles=5.0*10^-3

3.) equation is deltaHneutraliztion=q/Moles of limiting reagent H3PO4 is limiting reagent because lowest moles, and is used up first

4.) Now plug in variables DeltaH=2.2*10^2(1.5*10^3)= 146.67kj/mole Notice we had to convert J to kj,

7 0

3 years ago

7 organic compounds of plant origin

Nat2105 [25]

Explanation:

Among the numerous types of organic compounds, four major categories are found in all living things carbohydrates, lipids, proteins and nucleic acids.

8 0

3 years ago