You have a box that has a volume of 412cm and weighs 42g what is its density

Water contrasts on freezing?

What energy is created when an electron is added to a neutral atom of an element, forming a negative ion?

The density of benzene at 15 °c is 0.8787 g/ml. Calculate the mass of 0.1500 l of benzene at this temperature. Enter your answer in terms of grams

Which of the following statements holds true for chemical change? A) in a chemical change, no new substance is formed B) in a chemical change, a substance changes its phase C) in a chemical change, the molecular structure of a substance changes D)

Isopropyl Alcohol (C3H8O) is the active ingredient in hand sanitizer. If I have 125 grams of Isopropyl Alcohol (C3H8O) ... b. How many Hydrogen atoms are present? (round answer to 1 decimal place)

An atom that contains 22 protons, 23 neutrons, and 22 electrons would have a mass of approximately

Compared with a ph of 7, a solution of ph 5 has what times/fraction of the hydrogen concentration?

Write a formulae equation to represent the combustion of carbon to form carbon dioxide and the thermal decomposition of magnesium carbonate

A5.00 liter ballon of gas at 25 degree Celsius is cool to 0 degrees Celsius. What is the volume (liters) of the ballon?

How much thermal energy (q) is required to heat 15.2 g of a metal (specific heat = 0.397 J/G) from 21.0 degrees C to 40.3 degree C