What does a smaller uncertainty in chemistry mean?

Give one reason why something would have a smaller uncertainty.

Classify the bonds formed between each pair as ionic, polar covalent, or nonpolar covalent based solely on each element's position on the periodic table. O-O, Fe-O, Al-N, O-I, S-I, Br-Br, P-Br, Be-Cl

Use the electron-transfer method to balance this equation: Zn (s) + HCl (aq) → ZnCl2 (aq) + H2 (g) a. 2Zn (s) + HCl (aq) → ZnCl2 (aq) + H2 (g) b. Zn (s) + 2HCl (aq) →ZnCl2 (aq) + H2 (g) c. Zn (s) + HCl (aq) →ZnCl2 (aq) + H2 (g) d.

At a certain temperature, the solubility of strontium arsenate, sr3 (aso4) 2, is 0.0550 g/l. what is the ksp of this salt at this temperature?

Compare S (secondary) waves and P (primary) waves. Why do they travel at different speeds?

The chemical symbol for sodium is a. n. b. s. c. na. d. sn. user: the most active of all the chemical elements is a halogen known as a. iodine. b. astatine. c. bromine. d. fluorine.

The density of aluminum is 2.7 g/ml. if the aluminum has a volume of 10 ml, what is the mass of the aluminum?

A. List three things that your body strives to keep constant. (example metabolism) B. Describe one way in which each of the items you listed in Part A could be at least temporarily disrupted from equilibrium.

Part I Complete and balance the following equation: NO-2 (aq) + Al (s) →NH+4 (aq) + AlO-2 (aq) (basic solution)

A 425.00-gram sample of a compound decomposes into 196.01 grams of carbon, 41.14 grams of hydrogen, 130.56 grams of oxygen, and 57.29 grams of silicon. Experiments have shown the compound has a molecular weight of 208.329.

What characters do all minerals share