If an element contains 8 electrons how many electrons will be placed in the 2nd valence shell? 6 2 8 5 11

Grade 8 Science Does anyone know the correct answer to this Science question? If you do work on an object, how will its energy change? Its energy will increase. Its energy will decrease. Its energy remains the same.

The SI unit for current is: joules volts ohms amps

Which of the following would have the lowest threshold velocity? clay pebbles silt large rocks

Which organic reaction produces rubber and plastics? A) polymerization B) esterification C) saponification D) fermentation

When a 500. gram sample of water at 19.0oC absorbs 8.40 kiloJoules of heat, the temperature of the water will change to? A) 23.0oC B) 19.0oC C) 15.0oC D) 4.00oC

What is the primary function of neurons?

The decomposition of 11.0 g of fe2o3 results in

For the reaction: 2H2O2 → 2H2 + 2O2, what is the total number of moles of O2 produced from the complete decomposition of 8 moles H2O2? A) 2 moles B) 4 moles C) 8 moles D) 16 moles

If you have 15 grams of water, how many molecules of water do you have?

What is the volume of an object with a mass of 220g and a desnisty of 55cm3?