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natali 33 [55]
3 years ago
6

Which of the following combinations of information would allow you to calculate concentration in ppmv? Check all that apply. mol

es of solute and mass of solution moles of solute, mass of solution, and density of solution mass of solute, density of solute, and volume of solution volume of solute, mass of solution, and density of solution
Chemistry
1 answer:
kakasveta [241]3 years ago
3 0

Answer:

Explanation:

-mass of solute, density of solute, and volume of solution

-volume of solute, mass of solution, and density of solution

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What is the atomic number of an atom that has 6 protons, 6 neutrons, and 6 electrons? What is the atomic number of an atom that
Juli2301 [7.4K]

Answer: The atomic number of an atom that has 6 protons, 6 neutrons, and 6 electrons is 6.

Explanation:

Atomic number is defined as the number of protons or number of electrons that are present in an atom.

For a neutral atom:

Atomic number = Number of electrons = Number of protons

Given :  Number of electrons = Number of protons = 6

Thus atomic number = 6

Mass number is defined as the sum of number of protons and neutrons that are present in an atom.

Mass number = Number of protons + Number of neutrons

Given: Number of neutrons = 6

Thus mass number = Number of protons + Number of neutrons = 6+ 6= 12.

The atomic number of an atom that has 6 protons, 6 neutrons, and 6 electrons is 6.

4 0
3 years ago
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sweet [91]

Answer:

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5 0
2 years ago
14. What are the different types of river in Nepal ?explain them briefly ​
Stella [2.4K]

Answer:

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8 0
2 years ago
Hydroxylamine is a weak molecular base with kb = 6.6 x 10-9. what is the ph of a 0.0500 m solution of hydroxylamine?
7nadin3 [17]
Answer is: pH of hydroxylamine solution is 9,23.

Kb(NH₂OH) = 1,8·10⁻⁵<span>.
c</span>₀(NH₂OH)<span> = 0,0500 M = 0,05 mol/L.
c(NH</span>₂⁺) = c(OH⁻) = x.

c(NH₂OH<span>) = 0,05 mol/L - x.
Kb = c(NH</span>₂⁺) · c(OH⁻) / c(NH₂OH).

0,0000000066 = x² /  (0,05 mol/L - x). 

solve quadratic equation: x = c(OH⁻) = 0,000018 mol/L.<span>
pOH = -log(</span>0,000018 mol/L) = 4,74.<span>
pH = 14 - 4,74 = 9,23.</span>


4 0
3 years ago
Which of the following molecules has correctly labeled bond dipoles?
Pepsi [2]
The bond dipole moment<span> uses the idea of </span>electric dipole moment<span> to measure the </span>polarity<span> of a chemical bond within a </span>molecule<span>. It occurs whenever there is a separation of positive and negative charges. In the diagram above, option B exhibited a bond dipole moment. I hope this helps.</span>
8 0
3 years ago
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