Cross Multiplication

In a chemical reaction, the rate of reaction is inversely proportional to the concentration of a reactant. If the concentration of the reactant is doubled, what happens to the rate of reaction?

• The rate of reaction doubles

• The rate of reaction halves

• The rate of reaction remains the same

• The rate of reaction quadruples

Tags

NGSS.HS-PS1-5

Which of the following is an example of a cross-multiplication in chemical equations?

• Balancing @@ ext{H}_2 + ext{O}_2 ightarrow ext{H}_2 ext{O}@@

• Using stoichiometry to find the mass of a product

• Determining the limiting reactant

In a physics experiment, the force applied is inversely proportional to the distance. If the distance is reduced by half, what happens to the force?

• The force doubles

• The force halves

• The force remains the same

• The force quadruples

Which of the following best describes cross-multiplication in genetics?

• Crossing two different species

• Using a Punnett square to predict offspring

• Calculating allele frequency

• Determining genetic linkage

In a biology experiment, the growth rate of bacteria is inversely proportional to the concentration of an antibiotic. If the concentration of the antibiotic is increased, what happens to the growth rate of the bacteria?

• The growth rate increases

• The growth rate decreases

• The growth rate remains the same

• The growth rate doubles

Which of the following scenarios involves cross-multiplication in physics?

• Calculating velocity using distance and time

• Balancing forces in a lever system

• Using vectors to find resultant force

• Determining acceleration from force and mass

In an experiment, the pressure of a gas is inversely proportional to its volume. If the volume is decreased by a factor of three, what happens to the pressure?

• The pressure triples

• The pressure decreases by a factor of three

• The pressure remains the same

• The pressure doubles

Which of the following is an example of cross-multiplication in environmental science?

• Calculating carbon footprint

• Balancing chemical equations in pollution control

• Using ratios to determine species population

• Analyzing energy consumption data

Tags

NGSS.HS-ESS3-2

NGSS.HS-LS2-2

In a chemical reaction, if the concentration of a reactant is inversely proportional to the time taken for the reaction to complete, what happens if the concentration is increased?

• The time taken increases

• The time taken decreases

• The time taken remains the same

• The time taken doubles

Tags

NGSS.HS-PS1-5

Which of the following best illustrates cross-multiplication in astronomy?

• Calculating the distance of stars using parallax

• Determining the mass of planets

• Using light years to measure distance

• Analyzing the spectrum of a star