What element has 102 neutrons and 70 electrons

How would a scientist go about determining if an unknown substance is an element, compound, solution, or heterogeneous mixture?

Dry air is a better electric insulator than humid air. Would the electric discharge from a charged balloon happen more slowly in dry or humid air?

Testing shows that a sample of wood from an artifact contains 25% of the original amount of carbon-14. Given that the half-life of carbon-14 is 5730 years, how old is the artifact? OA. 5730 years OB. 22,920 years OC. 17,190 years OD. 11,460 years

Equilibrium occurs when : Answers: the net force on the object is zero. all the forces acting on an object are balanced. the sum of the + x forces on an object equals the sum of the âx forces.

What percentage of North American adults may be functioning below their potential due to prolonged exposure to stress

What is the most advanced life form on earth

Which EM wave is about the size of humans?

Describe how the Catapult works?

Newton's third law of motion states that the force pair acting on different objects consist of two forces that

While working on her science fair project Venus connected a battery to a circuit that contained a light bulb. Venus decided to change the light bulb to a higher resistance, but she wanted to keep the current the same.