An atom had a mass of 43 and it also has has 21 electrons

If the fuel does not have enough oxygen to burn completely CO2 and H2O, there can be two additional products. What are they?

CuSO4 absorbs light strongly at a wavelength of 635 nm. Consider that you measure the initial intensity of light, Io, entering the solution at 635 nm, and the intensity of light passing through the solution, I, at 635 nm. Sample 1: 0.

Interpret, in terms of atoms and in terms of moles, the supscript in a chemical formula C2H6

How many liters of 13.5 molar HCL stock solution are needed to make 10.5 liters of a 1.8 molar HCL solution? Show all the steps taken to solve this problem.

When preparing a TLC slide of a reference standard material (RSM), a solvent or mixture of solvents is used to dissolve the RSM and transfer it into the TLC plate. How does its polarity affects the Rf of the RSM?

Radium-223 is a radioactive isotope with a half-life of 11.4 days. how long (in days) will it be before 87.5% of the sample has decayed?

Which kind of reaction is shown below? 2H2O2 → 2H2O + O2

Phosphorus has the molecular formula p4, and sulfur has the molecular formula s8. how many grams of phosphorus contain the same number of molecules as 7.88 g of sulfur?

Latitude is the only factor that determines the temperature of a region true or false?

What is the overall reaction for lactic acid fermentation?