100g of water at 90 degree celsius is added to 50g of water at 10 celsius, what is the final temperature

The weight of an object is the product of its mass, m, and the acceleration of gravity, g (where g=9.8 m/s2). If an object's mass is m=10. kg, what is its weight?

Which of the following elements has the lowest electronegativity? a. lithium b. Carbon C. bromine d. fluorine

When heat is added to or removed from a substance, it may change its state. What state will most likely result if heat is added to a liquid?

What is the oxidation number of chlorine

Which example best describes the conversion of chemical energy to mechanical energy? A. fuel being combusted to power a rocket B. electricity boiling water C. sunlight warming the ground

What are two parts of the peripheral nervous system

Why is it problematic for some of a prescription cream to get on the outside of the jar?

How many milliliters of a 2.5 M LiOH solution are needed to completely neutralize 25 mL of a 1.0 M H2SO4 solution?

What is a neutralisation reaction?

Pure water at 25°C ionizes as what?