Answer: Blank 1: 6
Blank 2: 1
Blank 3: 7
Explanation:
According to the law of conservation mass, mass can neither be created nor destroyed in a chemical equation. Explanation: According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction.
The balanced chemical equation will be:

The stratosphere is above the earth's troposphere. It is about 32 miles above the earth's surface.
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Answer:
C. Amount of 3 dimensional space the object occupies
Explanation:
Single dimension is a laminar
Amount of 2 dimension is area
Amount of 4 dimension is negligible

Prominent copper sulfide minerals include Cu2S (chalcocite) and CuS (covellite).
Answer:
It depends on their melting and/or their boiling points, because the heat provides the particles with kinetic energy to break the electrosatic bonds in the substances, which can differ in strength
Explanation: