The main differences between a light wave and a radio wave is it's A. Speed

B. Wavelength

C. Frequency

D. Both B and C

Felicity and Dawson are conducting an investigation to determine the empirical formula of iron oxide. They start with an 85.65g piece of iron metal and burn it in the air. The mass of the iron oxide produced is 118.37.

What mass of ammonium hydroxide is produced when 34 grams of ammonium chloride are added to an excess of potassium hydroxide?

A 0.50 L container at 305 K holds a 0.22 g sample of carbon dioxide gas (CO2). Assuming ideal gas behavior, what is the pressure, in kilopascals, exerted by the gas? A 23 kPa B 25 kPa C 41 kPa D 67 kPa

21 neutrons, 20 electrons, 20 protons

Indentify three types of fossils

What enables Dna to have so many variations with only 4 chemicals?

A chemist obtains 500.0 mL of a solution containing an unknown concentration of calcium iodide, CaI2. He pipets 15 mL of this solution into a 100 mL volumetric flask and dilutes to the mark.

Enthalpy changes that are difficult to measure directly can often be determined using Hess' Law to construct an enthalpy cycle.

Student follow up 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.

Consider the balanced chemical reaction below. When the reaction was carried out, the calculated theoretical yield for water was 176 grams, but the measured yield was 148 grams. What is the percent yield?