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lorasvet [3.4K]
3 years ago
10

Calculate the energy of a quantum of radiant energy with a frequency of 5.00x1011/s

Chemistry
2 answers:
Flauer [41]3 years ago
8 0
That most be your answer : 5.05500kilohertz
Aloiza [94]3 years ago
7 0
5.00 x  1011/s = 5.05500kilohertz
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A battery can provide a current of 4.60 A at 3.40 V for 2.50 hr. How much energy (in kJ) is produced? 1st attempt kJ Energy
Lunna [17]

Answer:

The energy produced equals 140.760 kJ

Explanation:

The relation between power, current and voltage is

Power=Current\times Voltage

Applying the given values in the relation above we get

Power=4.60\times 3.40=15.64W

Now Since Power=\frac{Energy}{Time}\\\\Energy=Power\times Time

Again applying the calculated values we get

Energy=15.64\times 2.50\times 3600=140760Joules=140.76kJ

4 0
4 years ago
Why was Rutherford's Gold Foil Experiment so important?
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Answer:

Answer is 'B' I think

Explanation:

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3 years ago
The chemical reaction involving an acid and a base or alkali is know as a ​
saul85 [17]

Ans

Neutralization reaction

Explanation:

The meaning is

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5 0
3 years ago
Read 2 more answers
What is the molarity of a naoh solution if 39.1 ml of a 0.112 m h2so4 solution is required to neutralize a 25.0-ml sample of the
aleksandrvk [35]
The reaction between NaOH and H₂SO₄ is as follows;
2NaOH + H₂SO₄ ---> Na₂SO₄ + 2H₂O
stoichiometry  of base to acid is 2:1
NaOH is a strong acid and H₂SO₄ is a strong acid, therefore complete ionization into their respective ions takes place.
number of acid moles reacted - 0.112 M / 1000 mL/L x 39.1 mL = 0.0044 mol
the number of base moles required for neutralisation = 0.0044 x 2 = 0.0088 mol
Number of NaOH moles in 25.0 mL - 0.0088 mol
Therefore in 1000 mL  - 0.0088 mol/ 25.0 mL x 1000 mL/L = 0.352 mol/L
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8 0
3 years ago
Why is foam fight chemical or a physical change
nata0808 [166]

Answer:

Foam fight is a chemical change.

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Please give me brainliest :)

4 0
3 years ago
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