Give an example of a physical change and a chemical change for iron

What element is being oxidized in the following redox reaction? Zn2 + (aq) + NH4 + (aq) → Zn (s) + NO3 (aq)

Object a has a mass of 12 G and a volume of 8 cm3 object be has a mass of 20 G and a volume of 8 cm3 which object has a greater density and by how much?

The volume of a gas is 59.5 liters at 121 kPa. what will be the volume if the pressure is reduced to 108 kPa, assuming temperature remains the same?

Indicate the relationship between the two structures in the pair. are they chair conformations of the same molecule? if so, are they conformational diastereomers, conformational enantiomers, or identical?

How would the tides on Earth be affected by the absence of the Moon? There would be no spring tides. The tides would occur at a much lower intensity. The high and low tides would occur more frequently. There would be no tides.

Consider the formation of glucose from carbon dioxide and water, that is the reaction of the photosynthesis process:

Is the animal farm poor true or false

Which list correctly shows carbohydrates in size from smallest to largest?

Metallic behavior is generally associated with elements with partially filled p orbitals. elements with unpaired electrons. elements with small atomic radii. elements with very negative electron affinities. elements with low ionization energies.

Does cos have a dipole moment? choose the answer that best explains the reason for your choice.