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7nadin3 [17]
3 years ago
13

Protons + Neutrons = the atomic ?

Chemistry
1 answer:
kolezko [41]3 years ago
7 0

Answer:

The atomic mass number is the number of protons and neutrons in an atom.

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Which of the following violates the Aufbau principle?
kondor19780726 [428]

E and B

Explanation:

The last option violates Aufbau's principle.

Aufbau's principle states that "the sublevels with lower energies are filled up before those with higher energies."

This implies that orbitals are not filled based on numerical order but on their energy levels.

The order is as follows;

   1s 2s 2p 3s 3p 4s 3d  e.t.c

In B, the 3s was not filled before jumping to 3p

In E, 3p was not filled before jumping to 3d and 3d was not even the next orbital.

learn more:

Atomic orbital brainly.com/question/1832385

#learnwithBrainly

3 0
3 years ago
The outline of a partial periodic table is shown.
vova2212 [387]

Answer:

I think section #3

Explanation:

When i was in science class in my memory it was always in that area

4 0
3 years ago
Read 2 more answers
What is the mass in grams of 8.65 mol C8H18?
aliina [53]

Answer:

m = 998 g

Explanation:

Hello there!

In this case, according to the definition of the molar mass as the mass of one mole of the compound, it is possible to state the 1 mole of C8H18 has a mass of 114.26 grams; therefore, the mass in 8.65 moles turn out to be:

m=8.65mol*\frac{114.26g}{1mol}\\\\m=998g

In agreement to the notation requirement.

Best regards!

5 0
3 years ago
What is the value of k, at 25 degrees Celsius
Dimas [21]
<h3>Answer:</h3>

298.15 K

<h3>Explanation:</h3>

W e are supposed to calculate the Value of K at 25°C

Assuming the value of K represent K, the question wants us to convert  degree Celsius to Kelvin.

  • To convert degrees Celsius to kelvin scale, we use the relationship;
  • Kelvin (K) = Degrees Celsius + 273.15 ; 273.5 is a constant
  • That is, to convert temperature from °C to Kelvin we add a constant of 273.15 to the °C given.

In this case;

Temperature is 273.15 °c

Thus, to Kelvin scale temperature will be;

= 25°C + 273.15

= 298.15 K

Therefore, the value of K, at 25°C is 298.15 K

7 0
3 years ago
What is the current in the 30 ohm heating coil of a coffee maker that operates on a 120 volt circuit?
SpyIntel [72]

Answer:

4Amps. i can't see other questions clearly

Explanation:

using  ohms law  \\ v = ir

  • V=120 volt
  • R=30ohms
  • I=?

I=V/R

I=120/30

I=4amps

8 0
3 years ago
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