Which of the following measurements is expressed to three significant figures?

A. 0.0006 m

B. 6066 mg

C. 6.40 * 10-7 km

D. 0.060 mm

Which is the correct name for P2O5? phosphorus dioxide phosphorus pentoxide diphosphorus pentoxide diphosphorus hexaoxide

Who is correct? Reggie, because baking and melting cause bonds to be broken, leading to a chemical change. Reggie, because objects that are heated always undergo chemical changes.

Does H₂ have a coefficient? Yes or No

How many milliliters of water must be added 100.0ml of 4.50MHBr to make a solution that is 0.250MHCl

Electrons never flow from sink to source. True False

What's the chemical formula for iron (ii) nitride

Ammonia (NH3) is one of the most common chemicals produced in the united states. it is used to make fertilizer and other products. Ammonia is produced by the following chemical reaction. N2 (g) + 3h2 (g) = 2nh3 (g) If you have 1.00 x 10^3g of N2 a.

How many grams of O2 are in 5.0 moles of the oxygen gas?

How many of the following compounds are soluble in water? Cu (OH) 2

Mg is a member of which family? a) noble gases b) halogensc) alkaline earth metals d) alkali metalse) none of the above