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Nikolay [14]
2 years ago
6

A___

Chemistry
2 answers:
Xelga [282]2 years ago
6 0
Meteoroid i’m pretty sure
damaskus [11]2 years ago
5 0

Answer:

I think it is a rock...

Explanation:

maybe idrk tho

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Which of the following properties can be used as evidence a chemical reaction has occurred? (Select all that apply)
frutty [35]
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2 years ago
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3 years ago
How does the abundance of various isotopes affect the atomic mass?
eduard

solution:

The quoted atomic mass on the Periodic Table is the WEIGHTED average of the individual isotopic masses. The higher the isotopic percentage, the MORE that isotope will contribute to the isotopic mass. For this reason, most masses that are quoted on the Table are non-integral.

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6 0
3 years ago
How many molecules are in 5 moles of C10H210?
Pavlova-9 [17]

Answer:

3.0 x 10²⁴molecules

Explanation:

Given parameters:

Number of moles of compound  = 5moles

Unknown:

Number of molecules  = ?

Solution:

A mole is substance that contains the Avogadro's number of particles;

   1 mole  = 6.02 x 10²³ molecules

   5 moles of the compound will give 5 x 6.02 x 10²³ molecules

                = 3.0 x 10²⁴molecules

3 0
2 years ago
Given the balanced equation representing a reaction at 101.3 kPa and 298 K:
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Answer (4)

Endothermic processes: are those in which occurs the absorption of heat.
the change of enthalpy (ΔH) is greater <span>than zero.
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hope this helps!
8 0
3 years ago
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