Chemistry, 25.02.2021 20:20, bosa1423ov5zrr
PLEASE HELP IM REALLY STRESSED OUT AND I JUST NEED SOMEONE TO DO THIS FOR ME! IK ITS ALOT SORRY! In this task, you'll determine whether a reaction between baking soda and citric acid is an endothermic reaction and whether it can be used in a cold pack. Estimated time to complete: 15 minutes Use this information to answer the questions that follow: To begin the experiment, Xavier washed his hands and put on safety goggles. He then measured 120 milliliters of tap water, 2.5 milliliters of baking soda, and 2.5 milliliters of citric acid. The initial temperature of the water was 23.5°C. Next Xavier added the baking soda and citric acid to the water. The mixture immediately began to bubble vigorously, which lasted for about 30 seconds. The new temperature of the mixture was 17.7°C.
Part A: is a chemical reaction taking place during Xavier's experiment? How do you know?
Part B: Did the chemical reaction absorb or release energy? How do you know?
Part C: Could this chemical reaction be used inside a cold pack or inside a container designed to keep a drink cold? Justify your answer.
Answers: 2
Chemistry, 22.06.2019 17:00, brownvester44
Astable electron arrangement for an atom is one that does not easily change. how is this arrangement arrived at? a. valence electrons are transferred or shared to create a full outer shell of electrons. b. valence electrons are discarded into space to create a full outer shell of electrons. c. protons (positive charge) pair with valence electrons (negative charge) to create a strong bond. d. outer shells with valence electrons are transferred or shared.
Answers: 2
Chemistry, 23.06.2019 09:20, annapittbull12
1) a. water molecule breaks up into hydrogen and oxygen on passing electricity. does this involve breaking intermolecular or intramolecular forces of attraction. explain b. on boiling water changes to water vapor. does this involve breaking intermolecular or intramolecular forces of attraction. explain methanol evaporates faster than water. contrast the intermolecular forces and the vapor pressures of methanol and water?
Answers: 2
Chemistry, 23.06.2019 11:30, elizebeth4501
Which of these have the same number of particles as 1 mole of water h2o
Answers: 1
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