Answer:
It is heterogeneous as it is made up of visibly different substances or phases.
Options are provided in the given question, so the complete question is as follows:
Laboratory equipment is cleaned and properly stored after use primarily so that —
A. chemical products can be measured and recorded as data
B. time is saved in setting up the next experiment
C. toxic materials can be kept in the laboratory
D. the possibility of contamination in the laboratory is minimized
Answer:
D. the possibility of contamination in the laboratory is minimized
Explanation:
After the completion of experiments, all the laboratory equipment should be cleaned and properly stored to minimize the possibility of contamination in the laboratory.
Any contamination in the laboratory can affect the experiment and will not give an accurate result, so it is important to clean and store the equipment properly.
Hence, the correct answer is "D".
Answer:
825.5 mm
Explanation:
850 mm is the total pressure of the two gases....subtract the water vapor pressure and the remainder is due to the oxygen
850-24.5 = 825.5 mm
For every 2 mol of Na 1 mole of cl2 will react
4 mol Na = 2mole cl2
