Which metal is more active than NI and less active than Zn?

1. Cu

2. Cr

3. Mg

4. Pb

what is a compound? what are compounds composed of? what is true about the composition of a compound, no matter where we happen to find the compound?

Sterling silver is a solid solution of silver and copper. if a piece of a sterling silver necklace has a mass of 105.0g and a volume of 10.12 ml, calculate the mass percent of copper in the piece of necklace.

A runner at a track meet completes exactly one lap around a 400 m track. what is the distance? what is the displacement?

Explain the relationship between the number of covalent bonds and bond length

sodium carbonate decahydrate crystals were left exposed on a watch glass for two days state the observation on the crystals after two days

The use of fertilizers in agriculture has significantly altered several nutrient cycles including:

If 31.6 g of KMnO4 is dissolved in enough water to give 160 mL of solution, what is the molarity? AND what mass of oxalic acid, H2C204, is required to make 300 mL of a. 74 M solution?

From where do the kinetic tiles collect energy?

For the reaction 2Fe + 3Cl2 → 2FeCl3 which of the following options gives the correct reactant:reactant ratio? Fe:Cl2 = 1:1 Fe:Cl2 = 2:3 Fe:Cl2 = 3:2 Fe:FeCl3 = 1:1

A 2.575 g piece of gold (specific heat = 0.129 J/g°C) at a temperature of 75°C is placed into cold water at 10°C. If the gold loses 10.0 J of energy, what is its final temperature in the water? Enter your answer to the nearest whole number of °C.