The density of platinum is 23.4 g/cm3

. Calculate the mass of 75.0 cm3

of platinum.

What is the difference in hydrogen ion concentration between hydrochloric acid and a lemon

Study the balanced chemical reaction. H2 + O2 → H2O2 (M H2 = 2.02 g/mol; M H2O2 = 34.02 g/mol) If 100.0 g of hydrogen peroxide (H2O2) is produced, what percent of the product is hydrogen? A) 50.0% is hydrogen. B) 94.1% is hydrogen. C) 5.

What do methanol (CH2O), ethanoic acid (C2H4O2), and glucose (C3H6O3) all have in common? a. They are all carbohydrates b. They all have the same empirical formula c. They all have the same % composition d. All of the above are true

Which travels along surface waves two media

What was the main reason the Federalists wanted to replace the Articles of Confederation? (1) The president did not have the power to veto legislation. (2) The legislative branch enacted an unfair tax program.

During its life cycle, an amphibian lives both on land and in water.

An atom that contains 22 protons, 23 neutrons, and 22 electrons would have a mass of approximately

Compared with a ph of 7, a solution of ph 5 has what times/fraction of the hydrogen concentration?

Write a formulae equation to represent the combustion of carbon to form carbon dioxide and the thermal decomposition of magnesium carbonate

A5.00 liter ballon of gas at 25 degree Celsius is cool to 0 degrees Celsius. What is the volume (liters) of the ballon?