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CaHeK987 [17]
3 years ago
12

Help please! I seriously need this done quickly

Chemistry
1 answer:
Fantom [35]3 years ago
6 0

Answer:

-33% yield

Explanation:

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How much did one drop of HNO3 cause the pH of water to change?
ankoles [38]
Assuming that there is missing information in this question I’m just going to go ahead and say that it’s lower.

HNO3 (nitric acid) is a very strong acid which should be found on the lower end of the pH scale. While water, on the other hand, is neutral and found at a pH of 7.

So if you add one drop of a strong acid into a neutral solution of 100ml let’s say, one can assume that the pH of that solution is now very low and probably found between 1-3 on a pH scale.

Reminder:

-Acids are found between 1-6 on the pH scale. The lower the number the stronger the acid

-Bases are found between 8-14 on the pH scale. The higher the number the stronger the base
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3 years ago
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Marina CMI [18]

Answer:

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Explanation:

7 0
4 years ago
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4. Which of the following methods of preserving food keeps food for long without going bad by making bacteria inactive? A. Freez
maw [93]

Answer:

c. because it lacks oxygen which might support life of the bacteria

6 0
2 years ago
A 145.2 L sample of gas exerts 315.7 mm Hg pressure at 89.8 °C. What volume does the gas have at 706 mm
jenyasd209 [6]

Answer:

c

Explanation:

mark me brainlisted please

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3 years ago
Calculate the wavelength of an electron (m = 9.11 x 10-28 g) moving at 3.66 x 100 m/s. A) 1.81 x 10-10 m B) 2.76 x 10-9 m C) 5.0
inna [77]

Answer:

option e = 1.99 × 10⁻⁶ m

Explanation:

Given data:

Mass of electron = 9.11 × 10⁻²⁸ g   or 9.11 × 10⁻³¹ Kg

Velocity = 3.66 × 100 m/s

Wavelength = ?

Solution:

Formula:

λ  = h / m. v

λ  = wavelength

h = planck's constant

m = mass

v = velocity

Now we will put the values in equation

λ  = h / m. v

λ  =  6.63 × 10⁻³⁴ Kg. m²/s  / 3.66 × 100 m/s . 9.11 × 10⁻³¹ Kg

λ  =  6.63 × 10⁻³⁴ Kg. m²/s / 3334.26  × 10⁻³¹ Kg .m/s

λ  = 1.99 × 10⁻⁶ m

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