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ohaa [14]
2 years ago
14

______= Speed / Wavelength

Chemistry
2 answers:
Nesterboy [21]2 years ago
6 0

Answer:

Frequency

Explanation:

It’s kinda self-explanatory but bascially speed=wavelength times frequency

Alex777 [14]2 years ago
5 0

Answer:

Frequency is Speed divided by Wavelength

Step-by-step explanation:

Don't think there needs to be an explanation for the formula, unless you want the conceptual understanding

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This circuit shows a battery and wires connected to a lightbulb. The chemical energy in the battery is converted to:
____ [38]

Answer:

B. electric energy then chemical energy

Explanation:

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2 years ago
Earth is the only planet that has a _____ and a _____.
Serggg [28]
If there are no selections than i would say a thick atmosphere and an unusual large moon.<span />
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3 years ago
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What are 3 characteristics of cnidarians?
patriot [66]
Tentacles with stinging cells, 2 body layers (ectoderm & endoderm), radially symmetric
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3 years ago
What mass of hydrogen will be produced by the reaction of 67.3 g of tin with excess water according to the following reaction?
Crank

Answer:

Mass of hydrogen produced =2.28 g

Explanation:

Given data:

Mass of tin = 67.3 g

Mass of hydrogen produced = ?

Solution:

Chemical equation:

Sn + 2H₂O    → SnO₂+ 2H₂

Number of moles of Sn:

Number of moles = mass/ molar mass

Number of moles = 67.3 g/ 118.71 g/mol

Number of moles = 0.57 mol

Now we will compare the moles of tin with hydrogen from balance chemical equation.

                             Sn             :               H₂

                              1               :                2

                          0.57             :               2×0.57 = 1.14

Mass of hydrogen:

Mass = number of moles ×molar mass

Mass = 1.14 mol × 2 g/mol

Mass = 2.28 g

6 0
3 years ago
How many molecules are in 4.00 x 10^2mg of ibuprofen?
Serggg [28]
Start by converting mg to g. There is .001g in every miligram, so there is 0.4g in this sample.

Then find the molar mass of ibuprofen (C13H18O2) which is 206.3g/mol

Then divide grams by the molar mass to get moles of C13H18O2: (0.4g)/(206.3g/mol) = 1.94x10^-3mol C13H18O2

Then multiply moles by Avogadro's number to get molecules: (1.94x10^-3mol)/(6.02x10^23) = 1.17x10^21 molecules of ibuprofen (C13H18O2)
3 0
3 years ago
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