Scientific method steps

Which two elements have the same number of valence electrons? A.) Na and Sr B.) Zr and H C.) O and S D.) Mg and P

What must be true for a hypothesis to become generally accepted by scientists

Etahnol has a density of 0.79 g/ml. what is the volume, in quarts, of 1.80 kg of alcohol?

In protein synthesis, how many nitrogenous bases code for a single amino acid?

Which statement about electrolytic cells is correct? A.) The anode is positive, and it is where reduction occurs. B.) The anode is negative, and it is where reduction occurs. C.) The anode is positive, and it is where oxidation occurs. D.

What resources that we use everyday

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.