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Rudiy27
3 years ago
9

Giúp em với mị người

Chemistry
1 answer:
alukav5142 [94]3 years ago
6 0

Answer:that is so hard

Explanation:

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Sound wave a has lower frequency than sounds wave b but both waves have the same amplitude . What must also be true of these two
Nady [450]

Explanation:

Higher the frequency smaller will be the wavelength. Higher frequency have shorter wavelength and lower frequency waves have larger wavelength. Also, Beats are formed by the superposition of two waves with slightly different frequencies but with similar amplitudes. In time, waves switch between constructive interference and disruptive interference, giving the resultant wave a time-varying amplitude.

8 0
3 years ago
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How many molecules of BH3 are in 14.32 grams of BH3?
kkurt [141]

Answer:

6.23 x 10^23 molecules

Explanation:

First find the number of moles of BH3 from the information given. We know the amount of grams present and we can find the molar mass which is 13.84.

We know that moles is grams divided by molar mass so we get 14.32/13.84 which is 1.03 moles.

Finally, to figure out the number of molecules, we multiply 1.03 by Avogadro's number which is 6.022x10^23 and we get 6.23x10^23 molecules.

3 0
3 years ago
Convert 1.350 atm into mmHg
Daniel [21]

Answer:

1026

Explanation:

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1026

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Formula

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7 0
3 years ago
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The next three (3) problems deal with the titration of 361 mL of 0.501 M carbonic acid (H2CO3) (Ka1 = 4.3 x 10-7, Ka2 = 5.6 x 10
professor190 [17]

Answer:

!

Explanation:

need it too^^

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3 years ago
Question 7 (1 point)
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