How does the valence of the element relate to its chemical activity?

A circuit contain a 5-ohm, a3-ohm, and an 8-ohm resistor in series. What is the total resistance of the circuit?

What is astrometry? What is astrometry? measuring the positions of stars on the sky using metric units for distance (e. g.

A man pushes against a truck that is too heavy for him to move. Has work been done? Explain.

Technician A says that the pushrods should be rotating while the engine is running if the camshaft and lifters are okay. Technician B says that the camshaft rotates at one-quarter the crankshaft speed. Who is right

A sodium ion has 11 protons and 10 electrons. what is its charge?

Total energy input is 1400 and my efficiency is 80% so what is the useful energy output in jules?

What is the force of gravity acting on a 2000-kg spacecraft when it orbits two Earth radii from the Earth's center (that is a distance r=6380 km above the Earth's Surface. The mass of the Earth is 5.98 x 1024 kg.

An LC circuit has a 6.00 mH inductor. The current has its maximum value of 0.570 A at t = 0s. A short time later the capacitor reaches its maximum potential difference of 66.0 V. What is the value of the capacitance?

The first law of thermodynamics states that ΔE = Q - W. Is this also a statement of the principle of conservation of energy? Yes, the heat added and the change in internal energy of the gas equal the work done by the piston.

How can we calculate the density of a sustance that has irregular volume