A student added 5 grams of calcium chloride, a white solid substance, to 15 grams of water at 220 C. Several observations were made and the student inferred that a chemical reaction occurred.
Which observation best supports the student's inference that a chemical reaction occurred?
A. The calcium chloride dissolved in the solution.
B. The mass of the solution totals 20 grams.
C. The temperature of the solution is 350 C.
D. The solution became lighter in color
Answers: 1
Chemistry, 21.06.2019 23:30
What’s the scientific notation for the number 6,840,000,000
Answers: 1
Chemistry, 22.06.2019 08:30
For each of the compounds below, show that the charges on the ions add up to zero. a. kbr b. cao c. li(2)o d. cacl(2) e. alcl(3)
Answers: 2
Chemistry, 22.06.2019 12:00
What is the lowest number energy level where a d sublevel is found
Answers: 1
Chemistry, 22.06.2019 14:00
Ascientist measures the speed of sound in a monatomic gas to be 449 m/s at 20∘c. what is the molar mass of this gas?
Answers: 2
A student added 5 grams of calcium chloride, a white solid substance, to 15 grams of water at 220 C....
Mathematics, 16.07.2019 13:40
Chemistry, 16.07.2019 13:40
Mathematics, 16.07.2019 13:40
Biology, 16.07.2019 13:40
Social Studies, 16.07.2019 13:40
Social Studies, 16.07.2019 13:40
Social Studies, 16.07.2019 13:40
Social Studies, 16.07.2019 13:40
Social Studies, 16.07.2019 13:40
Mathematics, 16.07.2019 13:40