One light-hour is the distance that light travels in an hour. how far is this, in kilometers? (recall that the speed of light is 300,000 km/s)

How many grams of hydrogen gas would be produced from the use of 9.5 moles of aluminum

Write an equation for the reaction of magnesium oxide with sodium chloride to produce magnesium chloride and sodium oxide. 1. Show the formulas of the reactants. 2. Show the formulas of the products. 3.

Student follow up 1 The ionic equation for the reaction between zinc and sulfuric acid is: Zn (s) + 2H + (aq) - Zn?" (aq) + H2 (g) a State what has been oxidised in this reaction. Explain your answer in terms of electrons.

What are the stages of filtration in the nephrons?

Which are examples of equilibrium? Check all that apply. Water drips out of a faucet and down a drain. A person's income and expenses are equal every month.

Which has more atoms, 2moles of carbon or 2 moles of aluminum

At 100 degrees c, water reacts with acetic anhydride to make acetic acid. also, at 100 degrees c, water reacts with acetylsalicylic acid and reverts it to salicylic acid and acetic acid.

What is the valence electron configuration of the group 2a elements?

Which of the following statements about monosaccharide structure is true? A) Aldoses and ketoses differ in the position of their hydroxyl groups. B) Monosaccharides can be classified according to the spatial arrangement of their atoms.

Examples of chemical and physical changes