1 Let's convert the density figure to grams per cubic centimeter (g/cm3). You'll have noticed that the density in our example is kg/m3, so we need to divide that figure by 1000 to give us a g/cm3 figure. 920 / 1,000 = 0.92g/cm3.  Next, we need to convert the unit figure from milligrams (mg) to grams (g).
Laws for Leaving a Child Home Alone. Only a couple of states have laws that specify the age when a child can be left home alone, including Maryland (age 8) and Illinois (age 14). However, most states have guidelines with the Department of Health and Human Services or other child protective agencies that test a child's ability to be left home alone.
What is the legal age for children to stay home alone overnight? Quick Answer. In the United States, no federal law exists setting an age at which children can stay home along unsupervised, although some states have certain restrictions on age for children to stay home alone as well as duration of unsupervised period.