Identify the solution that contains both the solute and solvent in the solid phase. A) air B) NaCl C) bronze D) salt water

Aluminum metal reacts with chlorine producing a spectacular display of sparks: 2al (s) + 3 cl2 (g) à 2alcl3 (s) δho = - 1408.4 kj how much heat is released when 7.5 g of metal react with excess chlorine

An atom of selenium (Se) forms a monatomic ion. Which ion does it most likely form? A. Se 2+ B. Se 2 - <- - I believe this is correct. C. Se 6+ D. Se 6-

500.0 mL of a gas is collected at 74,5 kpa. What will the volume be at 101,3 kpa?

Calculate the volume, in ml. of the 1.0 m naoh stock solution needed to prepare 250 ml of 0.1 molar naoh.

How many molecules are there in 30.0 g of methane gas (CH4) ? a. 1.00 mole of molecules b. 3.011 x 10^23 molecules c. 1.13 x 10^24 molecules d. 6.88 x 10^23 molecules e. 30 molecules

When the pressure and number of particles of a gas are constant, which of the following is also constant? a. the sum of the volume and temperature in Kelvin b. the difference of the volume and temperature in Kelvin c.

Directions: Select the choice that best fits each statement. The following questions (s) refer to the following elements. (A) Carbon (B) Sodium (C) Sulfur (D) Phosphorus (E) Potassium This element in pyrite contributes to acid mine drainage.

Briefly explain the process of refining of petroleum.

Determine how many moles of KNO3 are created if 0.03 moles of Kl are completely consumed

In comparison to an atom of 199F in the ground state, an atom of 126C in the ground state has