How do chemists identify elements & compounds?

Which of the following compounds is likely to have a pH above 7? KOH HBr HCl HOH

Elemental phosphorus reacts with chlorine gas according to the equation p4 (s) + 6cl2 (g) →4pcl3 (l) a reaction mixture initially contains 45.77 g p4 and 130.0 g cl2.

What is the correct formula for calcium nitride

Select the correct answer. Which latent print detection technique is used to detect prints on a non-porous surface? A. silver nitrate B. iodine fuming C. ninhydrin D. superglue fuming

An instrument used to separate cell parts according to density is the

After Pangaea broke up, North America became part of what?

What the different betwen observe and reference

How many moles are in 12.5 g of H2O

How do the atomic number and the number of protons relate to one another? The atomic number tells us the number of protons The atomic number is protons + neutrons They do not Electron Cloud

Check my work? 150 g of an unknown liquid is heated with 24,975 kJ of heat to form 0°C to 75°C. Identify the unknown liquid. Substance C (J/g-°C) Water (ice) 2.05 Ammonia (liquid) 4.70 Ethanol 2.44 Gasoline 2.22 Water (liquid) 4.18 Water (vapour) 2.