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uysha [10]
2 years ago
13

2 True or False. The speed of light is sped up by dense media.​

Chemistry
1 answer:
slava [35]2 years ago
8 0

Answer:

False.

Explanation:

Photons are slowed down when passing through matter, at a rate proportional to the density of the substance it passes through.

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PLZ HELP ME!!!!! Identify the compound that plants make to store as energy.
aliya0001 [1]

Answer:

Glucose

Explanation:

Plants make glucose to store as energy.

4 0
3 years ago
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Rank the ions in order of increasing basicity: CH3NH-, CH3CH2-, CH30-
Alexxx [7]

In order to find out the ranking of ions basicity, check the pKa values of each ions. The principle that you need to remember is that the stronger the acid the weaker the corresponding conjugate base. The pKa dictates acid value of the compound. The answer would be CH3NH, CH3O-, and CH3CH2-. 

3 0
3 years ago
calculate the concentration of silver in a 100.0 mL solution of silver bromide at 25oC (298 K) when the Ksp is 5.0 x 10-13
Sliva [168]

Answer:

Concentration AgBr at saturation = 7.07 x 10⁻⁷M

Explanation:

Given AgBr(s) => Ag⁺(aq) + Br⁻(aq) ; Ksp = 5 x 10⁻¹³ = [Ag⁺][Br⁻]

    I       ---                0              0

    C     ---               +x             +x

     E     ---                 x               x

[Ag⁺][Br⁻] = (x)(x) = x² = 5 x 10⁻¹³ => x = SqrRt(5 x 10⁻¹³) = 7.07 x 10⁻⁷M

4 0
3 years ago
Which element has the lowest first ionization energy? (F), (Li), (Fr), (Rb)?
Mariulka [41]

Answer:

Fr

Explanation:

Francium (Fr) has the lowest ionization energy, with a value of 4.0727eV. This ionization energy increases as one advances in a period, being greater in the group of nonmetals.

6 0
3 years ago
Help!! <br> What is the concentration of an unknown with an absorbance of 0.4 using the plot?
sveta [45]

Answer:3,4,1,2

Explanation:

hope this helped

6 0
3 years ago
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