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Readme [11.4K]
3 years ago
6

Let's practice calculating mass number. If an atom has 3 protons and neutrons, what's the mass number

Chemistry
1 answer:
kicyunya [14]3 years ago
5 0
The mass number is the same as the number of neutrons
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Give the value of the quantum number ℓ, if one exists, for a hydrogen atom whose orbital angular momentum has a magnitude of 6√(
MakcuM [25]

Answer:

For this angular momentum, no quantum number exist

Explanation:

From the question we are told that

   The magnitude of the angular momentum is  L  = 6\sqrt{\frac{h}{2 \pi} }

The generally formula for Orbital angular momentum is mathematically represented as

           L  = \sqrt{(l * (l + 1)) } *  \frac{h}{2 \pi}

Where l is the quantum number

now  

We can look at the given angular momentum in this form as

      L  = 6\sqrt{\frac{h}{2 \pi} }    =  \sqrt{36}  * \sqrt{\frac{h}{2 \pi}} }

comparing this equation to the generally equation for Orbital angular momentum

     We see that there is no quantum number that would satisfy this equation

5 0
4 years ago
What type of change occurs when rust on a nail a. chemical change b. physical change
Korvikt [17]

Answer:

Chemical change

Explanation:

The rusting of iron/a nail is a chemical change

Iron (Fe) and Oxygen (O) combine to create the compound Iron Oxide (Fe2O3), which is rust.

5 0
3 years ago
What is the pH of a 0.1M basic solution? <br><br> A. 7 <br> B. 0<br> C. 1<br> D. 13
Cloud [144]
C is the correct answer
4 0
3 years ago
You take a balloon and stick it in a refrigerator. The temperature inside the refrigerator is 4.0 °C and the temperature in your
Kobotan [32]
 First convert the 2 temperatures to  degrees K:
4   + 273  ---> 277   and 22---> 295

So using Charles' Law

V1 / T1  = V2 / T2
0.50 / 295 = V2 / 277

solving for V2 gives a volume of  0.469 L  to nearest milliliter

4 0
3 years ago
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A descriptive investigation gets its name from the fact that you are describing _____. A. your observations in writing B. your r
FrozenT [24]

Answer:

A) your observations in writing

Explanation:

6 0
3 years ago
Read 2 more answers
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