A 22.4 liter sample of gas at STP weighs 12.0 grams. What is the molecular weight of the gas?
ОООО
32.0 g/mol
16.0 g/mol
12.0 g/mol
29.4 g/mol
d

Write the complete balanced equation for the reaction between lead (iv) oxide (pbo2) and water (h2o).

Use examples from the article to explain one positive and one negative effect that chemistry has had on society.

The reactions shown here can be combined to make the overall reaction c(s) + h2o(g) ⇌ co(g) + h2(g) by reversing some and/or dividing all the coefficients by a number. a. c(s) + o2(g) → co2(g) k=1.363×10^69 b. 2 h2(g) + o2(g) → 2 h2o(g) k=1.389×10^80 c. 2co(g) + o2 (g) → 2 co2(g) k=1.477×10^90