What is the oxidation number for S in the compound S03? (Recall that O has an oxidation number of - 2.)

A. 0

B. + 2

C. + 4

D. + 6

Write a balanced chemical equation for the complete combustion of C3H7BO3, a gasoline additive. The products of combustion are CO2 (g), H2O (g), and B2O3 (s).

At STP, which sample contains the same number of molecules as 11.2 liters of CO2 (g) at STP? (1) 5.6 L of NO2 (g) (3) 11.2 L of N2 (g) (2) 7.5 L of H2 (g) (4) 22.4 L of CO (g)

Write a sentence to explain mitosis using a skin cell as an example

A scientific law: is well tested, is unusually an equation, is an example of a scientific model, all of the above

How would Mg change to gain a noble gas structure? lose 2 electrons gain 6 electrons

What is a example of one natural source of radioactivity

Give the coordination number for each metal ion in the following compounds: (a) [Co (CO3) 3]3 - (note that CO32 - is bidentate in this complex) (b) [Cu (NH3) 4]2+ (c) [Co (NH3) 4Br2]2 (SO4) 3 (d) [Pt (NH3) 4][PtCl4] (e) [Cr (en) 3] (NO3) 3 (f) [Pd

A gas contained in a steel tank has a pressure of 1.5 atm at a temperature of 320 K. What will be the gas pressure when the temperature changes to 450 K?

How many ml is in a teaspoon?

In 1987 the first substance to act as a superconductor at a temperature above that of liquid nitrogen (77 k) was discovered. the approximate formula of this substance is yba2cu3o7. calculate the percent composition by mass of this material.