A sample of 22K gold contains the following: 22 g gold, 1.0 g silver, and 1.0 g copper. What is the percent gold in the sample? Group of answer choices

How are reactants converted to products in an elementary reaction?

Suppose the heat of neutralization had ben determined using a glass beaker instead of a polystyrene coffee cup. how would the measured value have been affected?

The slope of a distance-versus - time graph shows an object's? A. time of travel B. none of the other answer choices C. distance traveled D. speed

An earthquake's magnitude is a measure of the

Volcanoes are a source of this, but a bigger source in human activity. What is the thing?

A chemical reaction can start when enough activation energy is added to the reactants. Do you think the activation energy for chemical reactions in living things is high or low / Explain your answer

20 Which statement describes a reversible reaction at equilibrium? (1) The activation energy of the forward reaction must equal the activation energy of the reverse reaction.

Count the total number of atoms in CaCO3: 2 3 4 5 6

Question #21TrueFalse The general name for a substance added to a reaction that affects the rate but is not consumed in the reaction is called a complex a. True b. False

what kinda energy is produced when a force causes a substance to vibrate, and the energy is transferred through the substance in a wave.