The three-dimensional arrangement of electron groups around the central atom is called . A. Election-pair repulsion
B. Electronegativity
C. Geometric design
D. Electron-group geometry

Which force is most responsible for binding together an atom's protons and neutrons? electrostatic gravitational nuclear magnetic

Classify each possible hypothesis about a medicinal aloe vera plant as falsifiable or non-falsifiable. aloe vera gel is the best natural skin moisturizer. aloe vera gel can heal wounds by boosting cell renewal. aloe vera juice tastes better than carrot juice. drinking aloe juice can reduce the risk of lung cancer.

Apulley system is used to lift a 2,000 newton engine up a distance of 3 meters. the operator must apply a force of 250 newtons to the chain of the pulley system to lift the motor. to lift the engine 3 meters, the operator must pull a total of 30 meters of chain through the pulley system. what is the value of di?