Answer:
40.06
Explanation:
<u>(23 * 39) + (48 * 40) + (29 * 41)</u>
100
= 40.06
formula:
<u>(% of isotope A * mass of A) + (% of isotope B * mass of B) ......</u>
100
Answer:
You can see that it is an endothermic reaction or heat is being absorbed for the change from magnesium to magnesium oxide. So it is an endothermic reaction. So these are the four reasons why we can say that burning of magnesium ribbon in the air is considered a chemical change.
Explanation:
hope it help
Homogeneous has the same proportion of its own components throughout in any given samples while heterogeneous has components in which proportion aren’t the same they are vary throughout the sample
Answer:
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Explanation:
