Answer:
0.25 g/cm³ or 0.25 g/mL
Explanation:
Density = Mass / Volume, so you would then plug in your two variables.
D = 6 g/ 24 mL = 0.25 g/mL or 0.25 g/cm³
Answer:
notochord, a dorsal hollow nerve cord and pharyngeal slits.
Answer:
The answer to your question is This molecule has 10 carbons and 20 hydrogens.
Explanation:
- Number of carbons
You can see the picture below, all the edges are carbons and they are numbered, there are 10 carbons.
- Number of hydrogens
Carbon 1 has 3 hydrogens
Carbon 2 has 2 hydrogens
Carbon 3 has 1 hydrogen
Carbon 4 has 2 hydrogens
Carbon 5 has 3 hydrogens
Carbon 6 has 2 hydrogens
Carbon 7 has 1 hydrogen
Carbon 8 has 1 hydrogen
Carbon 9 has 2 hydrogens
Carbon 10 has 3 hydrogens
Total number of hydrogens = 20
The short answer is: The scientist means that a dose of 20 mg per kilogram is enough to kill one half or fity percent of the animals used in the test. LD stands for leathal doseage. The 50 means 50 percent. Subsequently a dose of 20 mg per killogram has a lethal dose that will kill 50% of the test subjects.