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timofeeve [1]
3 years ago
15

A solution of nitric acid has a [H3O+] = 2.8 x 10-6 M. What is the pH?

Chemistry
1 answer:
vladimir1956 [14]3 years ago
7 0

Answer:

5.55

Explanation:

see explanation attached

hope it helps

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If 0.0203 g of a gas dissolves in
ololo11 [35]

Answer:

P2 = P1*n2 / n1

       =1.02 atm *0.008 moles / 0.00113 moles

      = 7.22 atm

∴the new pressure will be 7.22 atm

Explanation:

7 0
3 years ago
A sample of pure sodium-24 has an initial mass of 10.0 grams. How many grams of sodium-24 will remain at the end of 4 half-lives
astra-53 [7]
I got b 5)A sample of pure sodium-24 has an initial mass of 10.0 grams. How many grams of sodium-24 will remain at the end of 4 half-lives?


A. 0.315
B. 0.630
C. 5.00
D. 6.00
8 0
3 years ago
About how much evaporation in the water cycle occurs over the ocean?
ioda
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How many protons (p) and neutrons (n) are in an atom of sr? 38 p, 90 n 90 p, 38 n 38 p, 52 n 52 p, 38 n?
harina [27]
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3 0
4 years ago
What is the frequency of an X-ray that has a wavelength of 1.5 x 10 -9 m? The speed of electromagnetic radiation is 3.0 x 10 8 m
AlexFokin [52]

Answer:

2.0x10¹⁷ Hz is the frequency of the X-ray

Explanation:

We can find the frequency of a wave of energy from the wavelenght and its speed using the formula:

v = λƒ

<em>Where v is speed (For electromagnetic radiation = 3.0x10⁸m/s)</em>

<em>λ is the wavelength in meters = 1.5x10⁻⁹m</em>

<em>And f is the frequency in s⁻¹ = Hz</em>

<em />

Replacing:

3.0x10⁸m/s = 1.5x10⁻⁹m*ƒ

3.0x10⁸m/s / 1.5x10⁻⁹m = f

f =

<h3>2.0x10¹⁷ Hz is the frequency of the X-ray</h3>

<em />

3 0
3 years ago
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