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Questions in Grade Middle-school

[Homework Help] A 1-gram sample of a compound is added to 100 grams of [tex]H_2O(l)[/tex], and the resulting mixture is then thoroughly stirred. Some of the compound is then separated from the mixture by filtration. Based on Table F, the compound could be: 1. AgCl 2. CaClâ‚‚ 3. NaCl 4. NiClâ‚‚

[Homework Help] Which statement describes a reversible reaction at equilibrium? 1. The activation energy of the forward reaction must equal the activation energy of the reverse reaction. 2. The rate of the forward reaction must equal the rate of the reverse reaction. 3. The concentration of the reactants must equal the concentration of the products. 4. The potential energy of the reactants must equal the potential energy of the products.

[Homework Help] Which change results in the formation of different substances? A. burning of propane B. melting of NaCl (s) C. deposition of CO2(g) D. solidification of water

[Homework Help] What does the judicial branch do?

[Homework Help] What are two Cabinet-level positions?

[Homework Help] What did Susan B. Anthony do?

[Homework Help] What type of formula represents the simplest whole number ratio of atoms of the elements in a compound? 1. Molecular formula 2. Condensed formula 3. Empirical formula 4. Structural formula

[Homework Help] What do we show loyalty to when we say the Pledge of Allegiance?

[Homework Help] If the President can no longer serve, who becomes President?

[Homework Help] Which quantity can be calculated for a solid compound, given only the formula of the compound and the Periodic Table of the Elements? 1. The density of the compound 2. The heat of fusion of the compound 3. The melting point of each element in the compound 4. The percent composition by mass of each element in the compound