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jekas [21]
1 year ago
6

Please answer urgent

Chemistry
1 answer:
erastova [34]1 year ago
4 0

The wavelength of a wave refers to the horizontal distance that is travelled by a wave.

<h3>What is wavelength?</h3>

The wavelength of a wave is given by the formula;

v =λf

f = v/λ

Substituting the values;

f = 3 * 10^8 m/s/410 * 10^-9 m

f = 7.3 * 10^14 Hz

for 2

f = 3 * 10^8 m/s/434 * 10^-9 m

f = 6.9  * 10^14 Hz

for 3

f = 3 * 10^8 m/s/486 * 10^-9 m

f = 6.2  * 10^14 Hz

for 4

f = 3 * 10^8 m/s/657 * 10^-9 m

f = 4.6 * 10^14 Hz

Learn more about wavelength:brainly.com/question/13533093

#SPJ1

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Determine the oxidation number of sodium in Na202
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Answer:

+1

Explanation:

Na₂O₂

NOTE: the oxidation number of oxygen is always –2 except in peroxides where it is –1.

Thus, we can obtain the oxidation number of sodium (Na) in Na₂O₂ as illustrated below:

Na₂O₂ = 0 (oxidation number of ground state compound is zero)

2Na + 2O = 0

O = –1

2Na + 2(–1) = 0

2Na – 2 = 0

Collect like terms

2Na = 0 + 2

2Na = 2

Divide both side by 2

Na = 2/2

Na = +1

Thus, the oxidation number of sodium (Na) in Na₂O₂ is +1

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2 years ago
Which product has a bitter taste, is slippery when mixed with water, and can damage skin and eyes?
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sodium hydroxide

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7 0
3 years ago
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Explanation:

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What are some changes that can be caused by sound energy? by electromagnetic energy?
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if one mole of calcium carbonate (the limiting reactant) is used, how much calcium chloride should the reaction produce? look at
salantis [7]

Answer:

The answer to your question is <u>111 g of CaCl₂</u>

Explanation:

Reaction

                 2HCl  +  CaCO₃   ⇒    CaCl₂  +  CO₂  +  H₂O

Process

1.- Calculate the molecular mass of Calcium carbonate and calcium chloride

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2.- Calculate the amount of calcium chloride produced using proportions.

The proportion CaCO₃ to CaCl₂ is   1 : 1.

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Then 111g of CaCl₂ will be produced.

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