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3 years ago

6

Experiments show that light behaves like

2 answers:

ANTONII [103]3 years ago

5 0

Answer:

The anwser is A

Explanation:

erik [133]3 years ago

5 0

Answer:

As light travels from source to detection, it can behave as either a particle or a wave—or, paradoxically, both states or neither state. ... Eventually, researchers performing the so-called double-slit experiment demonstrated that Newton and Huygens were both right—photons of light could behave as both particles and waves.Oct 25, 2017

Explanation:

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0.0055 in scientific notation

Digiron [165]

Answer:

5.5 x 10^-3

Explanation:

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3 years ago

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Write the name for the compound whose formula is shown here<br><br> Ca3(BO3) 2

4vir4ik [10]

Answer:

Calcium Nitrate

Explanation:

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3 years ago

A common laboratory method for preparing a precipitate is to mix solutions containing the component ions. Does a precipitate for

laiz [17]

Answer:

CaF2 will not precipitate

Explanation:

Given

Volume of Ca(NO3)2 $= 10$ ml

Molar concentration of Ca(NO3)2 $= 0.001$

Volume of NaF $= 10$ ml

Molar concentration of NaF $= 0.0001$

Ksp for CaF2 $= 3.2 * 10^ {-11}$

CaF2 will precipitate if Q for the reaction is greater than ksp of CAF2

Moles of calcium ion

$= 10 * 0.001\\= 0.01$

$[Ca2+] = \frac{0.01}{10 + 10} \\= \frac{0.01}{20} \\= 5 * 10^{-4}$

Moles of F- ion

$= 10 * 0.0001\\= 0.001$

$[F-] = \frac{0.001}{10 + 10} \\= \frac{0.001}{20} \\= 5 * 10^{-5}$

$Q = [Ca2+] [F-]^2\\= (5 * 10^{-4}) * (0.5* 10^-4)\\= 1.25 * 10^{-12}$

Q is lesser than Ksp value of CaF2. Hence it will not precipitate

5 0

3 years ago

Which of the following species cannot act as a Lewis base?

gayaneshka [121]

Answer:

NH4+

Explanation:

A Lewis base is a substance with the ability to share or give pairs of electrons.

The NH4 + ammonium ion donates a proton, therefore the ammonium ion is a Lewis acid.

6 0

3 years ago

Is -280 f degrees hot or cold

N76 [4]

Answer:

COLD

Explanation:

6 0

3 years ago

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