What does a machine change to make work easier? Select three options.

1) the amount of work done

2) the amount of force applied

3) the time needed to do the work

4) the direction of a force

5) the distance over which over a force is applied

Given: K = °C + 273.15 What is the temperature of the flame in degrees Celsius? You measure the flame of a candle and get a reading of 1,376.06 K. This valuelis equal to °c

Acetone and chloroform form an unusually strong intermolecular bond why is this

Born and Meyer developed a quantitative theory of bonding in ionic crystals in which the potential energy of the system is given by

Describe the silica tetrahedron

What color would the methyl orange indicator turn in a solution with a pH of 2? Red Yellow Pink Orange

What is the molarity of a solution that has 548 grams of HCl dissolved in 1.50 l water?

Steve puts some cheddar cheese in a pan on the stove and starts to melt it. After a little while, there is a layer of oil floating on top of the cheese. From the way the cheese melted, Steve knows it is a A Element B Solid C Mixture D Pure Substance.

Which experimental feature of the MALDI-MS technique allows the separation of ions formed after the adduction of tissue molecules? A) Distance travelled by ions depends on the ion charge. B) Velocity of ions depends on the ion mass-to-charge ratio.

Which temperature is required for the cell potential to be the standard cell potential? A) - 273°C B) 100°C C) 25°C D) 0°C

1. the purpose of the aqueous solutions in a galvanic cell is to? a. provide ions to be oxidized and reduced b. provide a path for the free flow of electrons c. maintain charge balance in the cell d. correct any volume changes in the cell 2.