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4vir4ik [10]
3 years ago
5

4) Complete the following statement: Different elements...

Chemistry
2 answers:
Andrew [12]3 years ago
6 0
D.) Have different numbers of protons.
Arada [10]3 years ago
4 0
Have a different number of protons
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How many moles are in 3.45 g of Na2O?Round your answer to three significant
Neporo4naja [7]

Answer: There are 0.056 moles present in 3.45 g of Na_{2}O.

Explanation:

Given : Mass = 3.45 g

Moles is the mass of substance divided by its molar mass.

Hence, moles of Na_{2}O (molar mass = 61.98 g/mol) is as follows.

Moles = \frac{mass}{molar mass}\\= \frac{3.45 g}{61.98 g/mol}\\= 0.056 mol

Thus, we can conclude that there are 0.056 moles present in 3.45 g of Na_{2}O.

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3 years ago
Calculate how much Kool-aid you will need to make 0.5 L of each of the following solutions: 0.1M, 0.4M, & 0.7M.
icang [17]

Answer:

the 4th option

Explanation:

because i said so

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dmitriy555 [2]
C underground pipelines

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3 years ago
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Both the codons uuu and uuc specify the amino acid phenylalanine. what is the term for this phenomenon?
kaheart [24]

This is called codon degeneracy. It is also said that the genetic code is redundant, meaning that multiple codons can code for the same amino acid, like for example CCC and CCA both coding Proline.

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7 0
3 years ago
Answer all 5 questions, please
klemol [59]
1.) protons neutrons and electrons

2.) a wall outlet it is made up of metal that conducts heat. When when heat is applied it provides enough energy to these electrons

3.) is an imbalance if electric charges within or on the surface of a material

4.) static electricity decoded tiny changes in the surface of a balloon causes it to charge more when rubbed against our hair

5.) you might have to answer that on your own but if you don’t want to here’s my experience


One day me and my twin brother were jumping on the trampoline and when we fell down my hair rubbed against the surface of it and stuck up

Hope that helped and Brainiest?
6 0
3 years ago
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