Why does oil prolong the life of car parts? a. it reduces wear due to friction c. it creates more momentum in the engine b. it protects them from dirt d. it to increase the mass of the engine

To save time, you can approximate the initial mass of the solid to the nearest ±1 g. for example, if you are asked to add 14.3 g of copper, add between 13 g and 15 g. which of the following sets include two samples with an equal density? which all that apply below 15.4 g gold and 18.7 g silver 15.2 g copper and 50.0 g copper 20.2 g silver and 20.2 g copper 11.2 g gold and 14.9 g gold

What does x represent in the formula for the compound xcl4?

Which of these best describes an ionic bond?