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Naddika [18.5K]
3 years ago
6

6) How many valence electrons does an atom of Cu possess?

Chemistry
1 answer:
agasfer [191]3 years ago
7 0
The answer is c)11 because copper has 11 valence electrons
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The table below gives the atomic mass and relative abundance values for the three isotopes of element M.
Serhud [2]

The average atomic mass formula is:

average atomic mass = \Sigma (percent abundane)\times (atomic mass)

Substituting the values in the formula:

average atomic mass = \frac{78.99\times 23.9850+10\times 24.9858+11.01\times 25.9826}{100}

average atomic mass = \frac{1894.57515+249.858+286.068426}{100}

average atomic mass = 24.30516 amu

Hence, 24.30516 amu is the average atomic mass of element M.

7 0
3 years ago
Sodium metal reacts with aluminum chloride to produce sodium chloride and aluminum. The balanced reaction is: 3 Na(s) + AlCl3(aq
andre [41]
First convert 12.0g of Na to moles using the grams to moles conversation and you get about .5219 moles (I didn't use significant figures). Divide that number by 3 because that is the coefficient of Na and you will get about .17398 moles, which is how many moles are in 1. Since Al has a coefficient of 1, .17398 woild be your final answer
3 0
3 years ago
5. A particular anticodon is 5'-AGC-3'. The codon that is a precise complementary base pair match for this is 5'-AGU-3'. However
Veseljchak [2.6K]

Explanation:

Wobble Hypothesis given by Francis Harry Compton Crick states that 3rd base of mRNA codon can base pair with 1st base of a tRNA anticodon undergoing non-Watson-Crick.

The first 2 bases of the mRNA codon form Hydrogen bonds with the corresponding bases on tRNA anticodon in Watson-Crick manner. Through this, they only form the base pairs with the complimentary bases. However, formation of the Hydrogen bonds between 3rd base on codon and 1st base on anticodon can occur potentially in non-Watson-Crick manner.  

<u>Thus, the Wobble Hypothesis explains that why the multiple codons can code for single amino acid.</u>

3 0
3 years ago
If gas particles start colliding with the walls of their metallic container with increased force, what is their direct effect? l
stepladder [879]
The answer is B) Higher gas pressure.
8 0
3 years ago
Read 2 more answers
What titrant will be used to titrate the 0. 02 m hcl phenol red solution?
RideAnS [48]

The NaOH will be used What titrant  to titrate the 0. 02 m hcl phenol red solution.

Acid-base titrations may be the most typical titrations, although there are numerous more forms as well. Take a look at this illustration where sodium hydroxide is used to titrate a sample of hydrochloric acid (HCl) (NaOH). The titrant (NaOH), which is added gradually throughout the duration of the titration, has been added to the unknown solution.

Titrants are solutions with known concentrations that are added to solutions whose concentrations must be determined. The solution for whom the concentration needs to be determined is known as a titrant as well as analyte.

Therefore, the NaOH will be used as a titrant to titrate the 0. 02 m hcl phenol red solution.

To know more about titrant

brainly.com/question/21504465

#SPJ4

7 0
1 year ago
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