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Zigmanuir [339]
3 years ago
11

Question 4(Multiple Choice Worth 4 points)

Chemistry
2 answers:
Sveta_85 [38]3 years ago
6 0
C because endangered animals cannot be tested in the scientific method
boyakko [2]3 years ago
6 0

Answer: C) Why should endangered animals be protected?

Explanation:

A science is a discipline which can answer questions related to the cause of natural processes or events occurring in the natural world. The questions related to science can be answered by experimental procedures.

C cannot be answered by science as it is a question of moral question related to social ethics. The endangered animals if abolished will negatively reduce the biodiversity of the organisms living on earth.  

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When pcl5 solidifies it forms pcl4 cations and pcl6–anions. according to valence bond theory, what hybrid orbitals are used by p
SSSSS [86.1K]

When pcl5 solidifies it forms pcl4 cations and pcl6–anions. according to valence bond theory, hybrid orbitals that  are used by phosphorus in the pcl4 cations are one orbital of s and three orbital of p as it is sp³hydridised.

<h3>What is sp³ hybridization?</h3>

Hybridization is a process or system which specifies the shape and geometry of any element or molecule with bond angles too.

The pcl4 cation is sp³ hybridized because of the phosphorus behave as a central atom here and the 4 chloride molecules are attached with the p- orbitals to the phosphorus molecule.

Therefore, pcl4 cation  is sp³ hybridized.

Learn more about sp³ hybridization, here :

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5 0
2 years ago
The second atomic structure YES <br> No
gizmo_the_mogwai [7]

Answer

The second part of the theory says all atoms of a given element are identical in mass and properties. The third part says compounds are combinations of two or more different types of atoms. The fourth part of the theory states that a chemical reaction is a rearrangement of atoms.

Explanation:

4 0
3 years ago
A student measures the mass of a sample as 9.64 g. Calculate the percentage error, given that the correct mass is 9.80 g.
rosijanka [135]

Answer:

<h3>The answer is 1.63 %</h3>

Explanation:

The percentage error of a certain measurement can be found by using the formula

P(\%) =  \frac{error}{actual \:  \: number}  \times 100\% \\

From the question

actual mass = 9.80 g

error = 9.80 - 9.64 = 0.16

We have

p(\%) =  \frac{0.16}{9.80}  \times 100 \\  = 1.632653061...

We have the final answer as

<h3>1.63 %</h3>

Hope this helps you

5 0
4 years ago
Disadvantages of modern periodic table?<br>​
ira [324]

Answer:

It has its elements with mass numbers phrased in many decimal places, it requires one to round off to get the actual value.

The atomic numbers of some elements such as Protonium were just guessed.

4 0
3 years ago
HELP ASAP!!!!!!
Sav [38]

1, 4, 1, 2, 1

Explanation:

We have the following chemical reaction:

MnO₂ + HCl → MnCl₂ + H₂O + Cl₂

To balance the chemical equation the number of atoms of each element entering the reaction have to be equal to the number of atoms of each element leaving the reaction, in order to conserve the mass.

So the balanced chemical equation is:

MnO₂ + 4 HCl → MnCl₂ + 2 H₂O + Cl₂

Learn more about:

balancing chemical equations

brainly.com/question/14112113

#learnwithBrainly

7 0
4 years ago
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