Answer:
2.8 * 10^(-6) / 1.4 * 10^(-2)=
2* 10^(-8)
1. Synthesis or Combination reaction
2. Double replacement reaction
3. Single Replacement reaction
4. Decomposition reaction
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SAMPLE A - <span>pure substance.
</span>SAMPLE B - <span>homogeneous mixture.
</span>SAMPLE C - <span>heterogeneous mixture.
</span>Pure substance - <span>constant composition and properties.</span>
Homogeneous mixture - same uniform appearance and composition.
Heterogeneous mixture - <span>not </span>uniform<span> in composition, two phases (liquid and dust).
</span>
B! because the hydrogen causes some nuclear reactions.
B.
Spring tides occur during a new/full moon. The sun, moon and earth form a straight line during these phases.
