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Nuetrik [128]
3 years ago
8

What is the energy of a photon that has a frequency of 0.5 Hz?

Chemistry
1 answer:
fomenos3 years ago
5 0
<h3>Answer:</h3>

3.313 × 10^-34 Joules

<h3>Explanation:</h3>

The frequency of a photon is 0.5 Hz

Required to find the energy of a photon;

We need to use the formula for energy of a photon;

Energy,E=hf, where h is the plank's constant and f is the frequency of the photon.

Plank's constant, h = 6.626 × 10^-34 J-s

Therefore;

Energy =  6.626 × 10^-34 J-s × 0.5 Hz

            = 3.313 × 10^-34 Joules

Thus, the energy of a photon with a frequency of 0.5 is 3.313 × 10^-34 Joules

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Gold and copper are example of alloy

Explanation:

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Two isotopes of hydrogen fuse to form a neutron plus the larger element,A) beryllium.B) carbon.C) deuterium.D) helium.
Nezavi [6.7K]

Answer:  D) helium.

Explanation:

Nuclear fission is a process which involves the conversion of a heavier nuclei into two or more small and stable nuclei along with the release of energy.

_{92}^{235}\textrm{U}+_0^1\textrm{n}\rightarrow _{56}^{143}Ba+_{36}^{90}Kr+3_0^1\textrm{n}

Nuclear fusion is a process which involves the conversion of two small nuclei to form a heavy nuclei along with release of energy.

Example: _1^2\textrm{H}+_1^3\textrm{H}\rightarrow _2^4\textrm{He}+_0^1\textrm{n}+\text{energy}

Thus when deuterium and tritium , the two isotopes of hydrogen are fused, a heavier nuclei helium is being formed from two smaller nuclei releasing a neutron.

3 0
3 years ago
Nitrogen (N2) and hydrogen (H2) react to form ammonia (NH3). Consider a mixture of six nitrogen molecules and six hydrogen molec
Nezavi [6.7K]

Answer:

a)  No molecules of hydrogen

b) four molecules of ammonia

c) four left molecules of nitrogen.

Explanation:

The balanced reaction between nitrogen and hydrogen molecules to give ammonia molecules is:

N_{2}(g)+3H_{2}(g) -->2NH_{3}

Thus one molecule of nitrogen will react with three molecules of hydrogen to give two molecules of ammonia.

We have six molecules of each nitrogen and hydrogen in the closed container and they undergo complete reaction it means the limiting reagent is hydrogen. For six molecules of nitrogen, eighteen molecules of hydrogen will be required.

So six molecules of hydrogen will react with two molecules of nitrogen to give four molecules of ammonia.

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b) four molecules of ammonia

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3 years ago
Let us assume that fe(oh)2(s) is completely insoluble, which signifies that the precipitation reaction with naoh(aq) (presented
Yuki888 [10]

17.8 mL NaOH

<em>Step 1.</em> Write the chemical equation

Fe^(2+) + 2NaOH → Fe(OH)2 + 2Na^(+)

<em>Step 2.</em> Calculate the moles of Fe^(2+)

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= 11.50 mmol Fe^(2+)

<em>Step 3.</em> Calculate the moles of NaOH

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= 17.8 mL NaOH

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3 years ago
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