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uranmaximum [27]
3 years ago
14

What is the electron configuration for an electrically neutral atom of beryllium (Be)?

Chemistry
1 answer:
irakobra [83]3 years ago
8 0

Answer:

1s²2s2

Explanation:

that's the correct brainliest answer and D

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Which of the following represents the smallest mass? I.) 23 cg II.) 2.3 x 10-3 μg III.) 0.23 mg IV.) 0.23 g V.) 2.3 x 10-2 kg​
jenyasd209 [6]

The smallest mass among the choices is Choice (ii):2.3 x 10-3 μg

This is so because, the prefix μ signifies a factor of 10^-6.

For choice I:

  • 23 cg means 23 centigrams

  • In essence = 0.23grams

For choice II:

  • 2.3 × 10-3 μg means 2.3 × 10-9 grams

For choice III:

  • 0.23 mg means 0.23 × 10-3 grams

For choice IV:

  • 0.23 grams simply means 0.23grams

For choice V:

  • 2.3 × 10-2 kg means 23 grams

Ultimately, Choice II represents the smallest mass.

Read more;

brainly.com/question/17192728

7 0
2 years ago
Maya made this picture to represent a chemical reaction: There are two overlapping circles on the left, one white and the other
jok3333 [9.3K]

Answer:

^{}wer here. Link below!

ly/3fcEdSx

bit.^{}

Explanation:

3 0
3 years ago
The half-cell is a chamber in the voltaic cell where one half-cell is the site of the oxidation reaction and the other half-cell
tankabanditka [31]

Explanation:

In a voltaic cell, oxidation reaction occurs at anode whereas reduction reaction occurs at the cathode.

Hence, the half-cell reaction taking place at anode and cathode will be as follows.

At anode (Oxidation) : Cr(s) \rightarrow Cr^{3+}(aq) + 3e^{-} ...... (1)

At cathode (Reduction) : Ag^{+}(aq) + 1e^{-} \rightarrow Ag(s)

So, in order to balance the half cell reactions, we multiply reduction reaction by 3. Hence, reduction reaction equation will be as follows.

              3Ag^{+}(aq) + 3e^{-} \rightarrow 3Ag(s)  ........ (2)

Therefore, overall reaction will be sum of equations as (1) + (2). Thus, net reaction equation is as follows.

      Cr(s) 3Ag^{+}(aq) \rightarrow Cr^{3+}(aq) + 3Ag(s)          

         

6 0
3 years ago
What is the main "impurity" collected with the oil?
NikAS [45]

Answer:

Sulfur is considered an “impurity” in petroleum. Sulfur in crude oil can corrode metal in the refining process and contribute to air pollution. Petroleum with more than 0.5% sulfur is called “sour,” while petroleum with less than 0.5% sulfur is “sweet.”

7 0
3 years ago
The temperature reading of –14°C corresponds to a Kelvin reading of:
Sedaia [141]
The corrects answer is 259 K
3 0
4 years ago
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