Which of the following is not a correct chemical equation for a double replacement reaction?

2 HNO3 + Mg (OH) 2 yields 2 H2O + Mg (NO3) 2

H3PO4 + 3 NaF yields 3 HF + Na3PO4

2 KNO2 + BaSO4 yields K2SO4 + Ba (NO2) 2

Ca + 2H2O yields Ca (OH) 2 + H2

A reaction is expected to produce 28.3 moles of hydrogen gas. If the hydrogen is collected at 297 K and 1.08 atm, what is the volume?

Write balanced equations showing the reactions between hydrogen and each of the following elements.

What term best describes when cryptography is applied to entire disks instead of individual files or groups of files?

Which statement about the noble gas is most reliable

A solution in equilibrium with solid barium phosphate (ba3 (p o4) 2) is found to have a barium ion concentration of 0.0005 m and a ksp of 3.4 x 10-23. calculate the concentration of phosphate ion. 1. 2.6x10-7 2. 1.04x10-6 3. 5.2x10-7 4. 1.3x10-7 5.

How should scientist respond when new evidence that challenges current is presented?

Consider the following reaction, equilibrium concentrations, and equilibrium constant at a particular temperature. Determine the equilibrium pressure of H2. D2 (g) + H2 (g) ⇌ 2 HD (g) Kp = 1.80 P (D2) eq = 1.1 * 10-3 atm P (HD) eq = 2.7 * 10-3 atm

Find δe for the change in state of 1.0 molh2o (l) at 79 ∘c to h2o (g) at 116 ∘c. the heat capacity of h2o (l) = 75.3 j/molk, heat capacity of h2o (g) = 25.0 j/molk, and the heat of vaporization of h2o is 40.7*103j/mol at 100 ∘c.

Balloon A started with a volume of 1.76 L. The temperature of the room the balloon was in was 295 K. The balloon was heated to a temperature of 253.15 K. What is the new volume?

The standard internal energy change for a reaction can be symbolized as ΔU°rxn or ΔE°rxn. For the following reaction equations, calculate the energy change of the reaction at 25 °C and 1.00 bar. Sn (s) + Cl2 (g) - - - > SnCl4 (l) + H (KJmol) - 511.3.