A tool to measure forces such as weight or friction

What is the bond polarity of NBr3

The mass of 1 gram: A. is kept as a standard platinum cylinder in France B. is. 01 kg C. equals the mass of 1 mL of water at 4°C D. equals 1 cm³

What chemical change causes cake to rise?

Phosphoric acid can be prepared by reaction of sulfuric acid with "phosphate rock" according to the equation:ca3 (po4) 2 + 3h2so4 → 3caso4 + 2h3po4 suppose the reaction is carried out starting with 125 g of ca3 (po4) 2 and 75.0 g of h2so4.

What is your weight a measure of

Bacteria are only found in decaying matter. A. True B. False

Which is considered a chemical mutagen? tanning beds tobacco X-rays precious metals

Combining 0.380 mol Fe2O3 with excess carbon produced 13.7 g Fe Fe2O3 + 3C → 2Fe + 3CO What is the actual yield of iron in moles? What is the theoretical yield of iron in moles? What is the percent yield?

When a hydrogen electron makes a transition from n=3 to n=1?

If two electrons have same number of protons but different number of neutrons can they be atoms of the same element?