What is the ph value of water and salt?

When a candle is cooling down is it a physical or chemical change

Laurie is moving a dresser with a mass of 250kg. She does 126 J of work with a force of 14 N. How far does she move the dresser?

What is the acceleration of an object if it goes from a velocity of + 25m/s to rest in 5.0s?

Which term best describes all atoms in ionic bonds? A. stable B. unstable C. positively charged D. negatively charged

For the aqueous solution containing 75 mg of compound C in 1.0 mL of water, what will be the total amount of the solute C that will be extracted after seven (7) extractions using a certain solvent D if 0.

All elements have a unique atomic emission spectrum. In which of the following scenarios would this fact be most useful? A. when trying to determine a star's chemical composition B. when trying to determine how old an artifact is C.

How does ATP form? Why is it important to the cell?

A 40.0 g drinking glass is filled with hot liquid. The liquid transfers 1,000. J of energy to the glass. If the temperature of the glass increases by 50.0 degrees Celsius, what is the specific heat of the glass?

What is the percent by mass of oxygen in propanal, CH3CH2CHO? (1) 10.0% (3) 38.1% (2) 27.6% (4) 62.1%

In which orbitals would the valence electrons for selenium (Se) be placed? s orbital and f orbital s orbital only s orbital and p orbital d orbital only