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PSYCHO15rus [73]
3 years ago
13

The atomic number of silver-108 is 47. Its mass number is 108. How many protons and neutrons does silver-108 contain? A. 47 prot

ons, 61 neutrons B. 47 protons, 108 neutrons C. 61 protons, 47 neutrons D. 108 protons, 47 neutrons
Chemistry
1 answer:
pychu [463]3 years ago
3 0

option A :47 protons and 60*neutrons

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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
2 years ago
How will you test for the gas which is liberated when hcl reacts with an active metal ?
DENIUS [597]
When HCl reacts with a metal, hydrogen gas will be evolved. To test this gas, insert a burning splinter into the outlet of gas, the flame will be extinguished with a pop sound. This will confirm the gas is hydrogen.
8 0
2 years ago
How many grams are in CO2?
Sati [7]
There are 44grams in CO2
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3 years ago
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Triss [41]

Answer:

Explanation:

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Explanation:

We assume that the temperature of the gas and the solid are EQUAL.

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What would be the energy change for the reverse transition:

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2 years ago
Find the empirical formula of a compound containing: 19.32% Ca, 34.30% Cl, and 46.38% O
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