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MariettaO [177]
3 years ago
14

How do you find the significant figure of 505kg-450.25kg

Chemistry
1 answer:
horrorfan [7]3 years ago
6 0

Answer:

4 significant figures

Explanation:

505 has 3 significant figures

450.25 has 5 significant figures

First do simple subtraction

505 - 450.25 =54.75

And then evaluate any number that has significance or is important if the decimal were to be moved.

4 significant figures

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The equation for photon energy, E , is
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The wavelength of a photon that has an energy of E = 3.69×10−19 J is 5.42 x 10⁻⁷ m.

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The space between corresponding points (adjacent crests) in adjacent cycles is known as the wavelength () of a waveform signal that is sent in space or down a wire.

The wavelength can be calculated by the given formula

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Putting the values in the formula

λ = (6.626 x 10⁻³⁴)(2.9 × 10⁸) / (3.65 x 10⁻¹⁹) = 5.42 x 10⁻⁷ m.

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2 years ago
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Answer:

At end point there will a transition from pink to colorless.

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How many total moles of ions are released when each of the following dissolves in water?
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This surficial phase has a thickness of 0-10 atomic layers in Sr(HCO3)2 solutions and a thickness of 0-4 layers in Ca(HCO3)2 solutions and dissolves and/or recrystallizes within 6 minutes of reaction.

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