DOT class 6 includes:
Division 6.2 - Infectious substance
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Class 6 hazardous materials are toxic substances and infectious substances. These materials are capable of causing harm to human health when exposed, inhaled, or ingested. Examples include medical waste, infectious substances, and toxic chemicals.
There are 16 dots in the Lewis Dot Structure of H2Se. Each hydrogen atom contributes 1 dot and selenium contributes 6 dots.
Class one has one division.
The electron dot formula for SF6 would show 6 pairs of dots around the central Sulfur atom, representing the 6 Fluorine atoms bonded to it. The Sulfur atom will have 12 valence electrons around it in total.
The probability of rolling a dot cube and stopping with exactly two dots on top is 1/6, because there are 6 possible outcomes when rolling a dot cube (1, 2, 3, 4, 5, 6) and only one of those outcomes has two dots on top.
Yes, you can connect 9 dots set in a three on three array with four lines by imagining the array as a square with a dot at each corner and one dot in the center. You would draw a line from the top-left dot to the bottom-right dot, another line from the top-right dot to the bottom-left dot, one line horizontally through the center dot, and one line vertically through the center dot.