If your lungs were filled with air containing this level of lead, how many lead atoms would be in your lungs? (Assume a total lu

The reaction will yield 2 mol of H₂O. The balanced chemical equation for this process is: c3h8 (g) + 5o2 (g) → 3co2 (g) + 4h2o (g). Since 5 moles of O₂ create 4 moles of H₂O, 2.5 mol of O₂ will produce: 2.5 x 4/5 = 2 mol of H₂O.

Energy can be expressed as:

Q = ms dT

where m represents the mass of the block,

s stands for specific heat,

and dT indicates the temperature change.

Among the three blocks, the copper one has the lowest specific heat, resulting in a greater temperature change and subsequently, the highest final temperature.

Response: The volume of the cube that is underwater is 29.8 mL

Clarification:

Initially, we need to find the mass of the ice.

Equation applied:

Provided information:

Ice density =

Volume of ice = 45.0 mL

The cube displaces 40.5 g of liquid to float.

Next, we will ascertain how much of the cube is submerged in the liquid.

Therefore, the submerged portion of the cube is 29.8 mL

Answer:

The molality of the solution is 1.08 m.

Explanation:

First, determine the mass of the solvent.

A 13% solution by mass indicates that 13 grams are found in every 100 grams of solution.

Thus, solution mass = solute mass + solvent mass

100 g = 13 g + solvent mass

Therefore, solvent mass = 100 g - 13 g → 87 g

Next, we calculate the moles of solute (mass / molar mass):

13 g / 138.2 g/mol = 0.094 moles

Finally, to find the molality, which is the moles of solute per 1 kg of solvent (mol/kg), we convert the solvent mass to kg:

87 g. 1 kg / 1000 g = 0.087 kg

Then, molality → 0.094 mol / 0.087 kg = 1.08 m

The correct answer is option (D): CO₂, BCl₃, and Fe³⁺. Lewis theory defines an acid as a substance that can accept electron pairs, while a base donates electron pairs. a. It’s a Lewis acid as it accepts electron pairs. b. It isn't a Lewis acid since it does not accept electron pairs, but serves as a base by donating and accepting hydrogen ions. c. This qualifies as a Lewis acid as it accepts electron pairs due to having an incomplete octet and empty 2p orbitals. d. This is categorized as a Lewis acid as it accepts electron pairs. Therefore, the ions recognized as Lewis acids include CO₂, BCl₃, and Fe³⁺.