Ok, I need helpies! .__. Which of the following accurately describes the orbital path of most planets in our solar system?

The orbital path is in a perfect circle.

The orbital path looks circular.

The orbital path is in a large elliptical shape.

The orbital path varies greatly from planet to planet.

Write two balanced equations 1. dissolving of solid sodium hydroxide in water 2. the reaction of sodium hydroxide solution with hydrochloric acid

Classify this reaction: 2al+n2-> aln.

100 grams of molten lead (600°c) is used to make musket balls. if the lead shot is allowed to cool to room temperature (21°c), what is the change in entropy (in j/k) of the lead? (for the specific heat of molten and solid lead use 1.29 j/g⋅°c; the latent heat of fusion and the melting point of lead are 2.45 × 104 j/kg and 327°c, respectively.)