1. Mrs. Johnson’s first period class is designing an investigation to determine what could affect the rate of chemical change when vinegar is added to baking soda. Which of the following would be a valid test (independent) variable for this experiment?
A. The Temperature of the vinegar at the start of the reaction.
B. The time it takes for the reaction to take place.
C. The amount of gas produced by the reaction
D. The color of the products of the reaction.
Answers: 1
Chemistry, 22.06.2019 01:30
Reaction rate depends on how many molecules are coming into contact with each other with enough energy to react. increasing the temperature of the reactants will increase -
Answers: 3
Chemistry, 22.06.2019 13:30
Apush or pull that moves or changes and object when to objects touch
Answers: 2
Chemistry, 22.06.2019 17:10
Acalorimeter is to be calibrated: 51.203 g of water at 55.2 degree c is added to a calorimeter containing 49.783 g of water at 23.5c. after stirring and waiting for the system to equilibrate, the final temperature reached is 37.6 degree c. specific heat capacity of water (s = 4.18 j/g∙degree c). calculate the calorimeter constant. (smδt)warm water = -[(smδt)cold water + (calorimeterδtcold water)]
Answers: 2
Chemistry, 22.06.2019 22:00
All of the following are homogeneous mixtures except a) sugar dissolved in water. b) orange juice. c) coffee with cream. d) household vinegar. e) apple juice
Answers: 1
1. Mrs. Johnson’s first period class is designing an investigation to determine what could affect th...
Mathematics, 02.02.2021 22:00
Mathematics, 02.02.2021 22:00
Mathematics, 02.02.2021 22:00
Biology, 02.02.2021 22:00
Mathematics, 02.02.2021 22:00
Mathematics, 02.02.2021 22:00
Mathematics, 02.02.2021 22:10
Chemistry, 02.02.2021 22:10
Mathematics, 02.02.2021 22:10