An 8-year-old child fell to the ground from an 8-foot-high playground structure. He is lying on his back and moving very little. What sign or symptom would make you call 911 right away?

Pulse

Explanation:

The sign that would make me call 911 is his pulse. If the child's pulse is unresponsive, then that would be a clear sign for me to call the paramedics.

Explanation:

Well he fell down 8 feet, he is on his back, and is moving very little. Mostly the movement part and the sounds he might make conscious or not

it is a solid

explanation:

the dissociation of nickel hydroxide is follows:

the concentration of hydroxide ion is

the equilibrium constant value of nickel hydroxide is = 6.1 * 10^-^1^6 and thus equilibrium equation can be written as:

thus, concentration of ni is 0.23 * 10^-^4 mol /l