How many atoms of hydrogen are represented in 2 (NH4) 2504?

A. 4

B. 8

C. 16

D. 32

How are gases different from liquids and solids in terms of the distance between the particles?

A compound with formula AL (XF4) 3 contains (unidentified) element X, which is 11.3% by mass of the composition of the substance. What is identity of element X

Living organisms make their own carbon

Which of the following chemical equations violates the law of conservation of mass? A. Ti + 2Cl2 yields TiCl4 B. 2C2H2 + 5O2 yields 4CO2 + 2H2O C. Li2SO4 + 2Ca (NO3) 2 yields 2LiNO3 + 2CaSO4 D, MgSO4 + 2NaOH yields Mg (OH) 2 + Na2SO4

For the following endothermic reaction at equilibrium: Fe2O3 (s) + 3 H2 (g) 2 Fe (s) + 3 H2O (g) Decide if each of the following changes will increase the value of K (T = temperature).

a substance that undergoes a physical change like melting is still the same substance is it true or false

What is a polar molecule

A mixture of He He, N 2 N2, and Ar Ar has a pressure of 22.1 22.1 atm at 28.0 28.0 °C. If the partial pressure of He He is 2475 2475 torr and that of Ar Ar is 1049 1049 mm Hg, what is the partial pressure of N 2 N2?

Oceans make the temperaturs of nearby land more extreme ... True or false

The Greek letter D stands for A. Mass of B. Rate of C. Change in D. Heat stored in