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Naddika [18.5K]
3 years ago
11

When do you identify your variables?

Chemistry
2 answers:
Alekssandra [29.7K]3 years ago
3 0
Option numberrrr C I THINK
Natasha2012 [34]3 years ago
3 0

Answer:

Before the hypothesis

Explanation:

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In the three-dimensional structure of methane, ch4, the hydrogen atoms attached to a carbon atom are aligned ________. in the th
Nikitich [7]
Answer:
            In the three-dimensional structure of methane, CH₄, the hydrogen atoms attached to a carbon atom are aligned <span><u>at the corners of a Tetrahedron</u>.

Explanation:
                   In Methane (CH</span>₄) the central atom (carbon) is bonded to four hydrogen atoms. So, the central atom is having four electron pairs and all pairs are bonding pairs and lacks any lone pair of electron. According to Valence Shell Electron Pair Repulsion (VSEPR) Theory the central atom with four bonding pair electrons and zero lone pair electrons will attain a tetrahedral geometry with bond angles of 109°. Hence, the shape of CH₄ is tetrahedral.

4 0
3 years ago
Write a conversion factor that converts between moles of calcium ions in calcium phosphide, Ca3P2, and moles of Ca3P2.
cricket20 [7]

The conversion factor between moles of calcium ion and moles of Ca_3P_2 in  Ca_3P_2 would be 3 to 1.

<h3>Mole fraction</h3>

Ca_3P_2 if formed from 3 carbon atoms and 3 phosphate atoms according to the equation:

3Ca + 2P --- > Ca_3P_2

Thus, there are 3 moles of calcium in every 1 mole of  Ca_3P_2.

The conversion factor between moles of calcium and moles of  Ca_3P_2 will. therefore, be 3 to 1 or simply 3:1.

More on mole fractions can be found here: brainly.com/question/8076655

#SPJ1

6 0
2 years ago
A scientist observes debris added to a landform from a melting glacier. This is evidence for which type of natural process?
VARVARA [1.3K]
I think the answer is A. Physical weathering, because since a debris is added to the landform, it is physically happening.
3 0
4 years ago
What instrument should be used to find liquid volume?
timurjin [86]
Volumetric Cylinders
6 0
4 years ago
Read 2 more answers
Why did scientists need to establish an international language for elements
Ulleksa [173]
So it could be used in every country(different languages) yet still understood
5 0
3 years ago
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