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3 years ago

What is the name of a neutral group of atoms that are held together by covalent bond (this word has 8 letters)

1 answer:

8 0

The word that you're looking for is either nonpolar or molecule. Both have 8 letters. A molecule is a group of atoms held together by covalent bonds, and nonpolar is used to describe a molecule in which the electrons are shared equally between the atoms.

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Lewis dot structure for N3-

labwork [276]

Answer :

The steps involved in the electron dot structure of $N^{3-}$ are :

First we have to determine the total number of valence electron in $N^{3-}$ .

Number of valence electrons in N = 5

The charge on N is (-3). So, we add 3 electrons.

Total number of valence electrons = 5 + 3 = 8 electrons

The image is shown below.

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3 years ago

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Which of the following statements is true about the nucleus?

vlabodo [156]

Answer: option d i think

Explanation:

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3 years ago

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What are two things that you observed when you heated the mixture of tin and nitric acid over the Bunsen burner in the virtual l

Rus_ich [418]

1. The reaction for this would be:

Sn + 4 HNO₃ → SnO₂ + 4 NO₂ + 2 H₂O

The first observation would be bubbling of the solution and brown acrid smoke is produced due to the presence of NO₂ gas. Another observation would be the presence of a white solid which is SnO₂.

2. Heating was required to get rid of the H₂O. When all moisture is gone, you weigh the sample. Afterwhich, you further heat it to get ride of the oxygen. By doing this, you would know the individual mass of each element. Then, you can solve for the empirical formula of the oxide of tin.

3 0

3 years ago

How many liters of 3.5 M solution can be made using 23 moles of LiBr *must show work to get credit*

MrMuchimi

<u>Answer:</u> 6.57 L of solution can be made.

<u>Explanation:</u>

Molarity is defined as the amount of solute expressed in the number of moles present per liter of solution. The units of molarity are mol/L. The formula used to calculate molarity:

$\text{Molarity of solution}=\frac{\text{Moles of solute}}{\text{Volume of solution (L)}}$ .....(1)

Given values:

Molarity of LiBr = 3.5 M

Moles of LiBr = 23 moles

Putting values in equation 1, we get:

$3.5mol/L=\frac{23mol}{\text{Volume of solution}}\\\\\text{Volume of solution}=\frac{23mol}{3.5mol/L}=6.57L$

Hence, 6.57 L of solution can be made.

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3 years ago

QUESTION 10

iris [78.8K]

Answer:

Explanation:

Phosphofructokinase-1

6 0

2 years ago