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lina2011 [118]
2 years ago
5

A star is mainly made of hydrogen gas, but most classes of stars include other elements such as helium, calcium, and other heavi

er elements and molecules.
Group of answer choices

True

False
Chemistry
2 answers:
Xelga [282]2 years ago
6 0
That would be true, since most other stats include helium, calcium, etc
Sidana [21]2 years ago
4 0
The answer is true! :)
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ankoles [38]
DeltaH formation = deltaH of broken bonds - deltaH of formed bonds

Broken bonds: tiple bond N-N and H-H bond
Formed bonds: N-H and N-N bonds

You also have to take note of the molar coefficients

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8 0
3 years ago
A rod measures 17.2 inches.<br> How many centimeters is<br> this?<br> [ ? ] cm
Rufina [12.5K]

This problem is providing the length in inches of a rod and it is being required to convert it to centimeters. According to the following, the answer will be 43.7 cm:

<h3>Units conversion:</h3><h3 />

In science, we use units conversion to represent measurements in different types of units depending on a specific requirement. To do so, we use conversion factors based on equivalence statements, relating the required unit with the given one.

In this case, the equivalence statement between inches and centimeters is 2.54 cm = 1 in and we can use it to get the answer as shown below:

17.2in*\frac{2.54cm}{1in} \\\\=43.7 cm

Learn more about units conversion: brainly.com/question/13016491

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