What volume of water (in mL) do you need to add 50.0 mL of a 0.250 M of NaCl(aq) to bring the concentration down to 0.100 M?

The mathematical expression for the change in free energy of a system is ΔG = ΔH – TΔS. Which of the following statements best describes a term in this equation?

Which one of the following choices is a vector quantity?

The table gives the x and y components of two vectors A and B: Reference: Ref 1-2 Which one of the following statements concerning these vectors is true?

How many grams of BaCO3(s) (molar mass = 197.31 g/mol) could you theoretically produce if you react 58.0 g of BaI2(aq) (molar mass = 391.10 g/mol) with 39.0 g K2CO3(aq) (molar mass = 138.21 g/mol)? BaI2(aq) + K2CO3(aq) → BaCO3(s) + 2 KI(aq)

To prevent legs and ankles from swelling while sitting in a wheelchair, residents may

Given 399 g of ethanol (C2H5OH) which has a specific heat capacity of 2.46 J g-1 °C-1, how much energy (in kJ) is required to raise the temperature by 180. °C?

Action Inc., a sports brand, gives a portion of its profits to the local sports club that offers free coaching to children from lower income groups. This donation to a community organization is an example of ________ responsibility.

In the figure, “A” is a point located on the positive y axis. What will be the easiest way to determine the force reaction BZ ?

What is the correct representation of the following combinations of units inthe correct SI form: .