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3 years ago

Molecules condense when the temperature ______________. A. increases B. decreases

Chemistry

2 answers:

lisabon 2012 [21]3 years ago

7 0

Molecules condense when the temperature decreases :)

bekas [8.4K]3 years ago

6 0

B decreases i think if i remember right

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A hydrogen atom in an excited state can be ionized with less energy than when it is in its ground state. What is n for a hydroge

Molodets [167]

Explanation:

It is known that formula for the ionization energy of hydrogen atom is as follows.

E = $\frac{13.6 eV}{n^{2}}$

or, n = $\sqrt{\frac{13.6}{E}}$

The value of energy is given as 0.544 eV. Therefore, we will calculate the value of n as follows.

n = $\sqrt{\frac{13.6}{E}}$

= $\sqrt{\frac{13.6}{0.544 eV}}$

= 5

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30 mL of 0.6 M HCl solution is neutralized with 90 mL NaOH solution. What is the concentration of the base? Show all work Please

skad [1K]

From

na=1

nb=1

Va=30mls

Vb=90mls

Ma=0.6M

Mb=?

from

Mb=Ma×Va×nb

 Vb×na

Mb=0.6×30×1

 90×1

mb=18

 90

Mb=0.2M

NaOH=40

From

conc=molarity×mr

conc=0.2×40

conc=8g/mol

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