Calculate the concentration in g/L when 250 grams of sodium chloride is dissolved in 1.5 L of water.

A plant that requires more light than darkness in order to grow A. Stimulus B. Tropism C. Long-day plant D. Short-day plant

What is produced each time a c-c bond is re-arranged or broken?

The elements in Period 5 on the Periodic Table are arranged from left to right in order of (1) decreasing atomic mass (2) decreasing atomic number (3) increasing atomic mass (4) increasing atomic number

What is opium is it a drug if so is it bad for you and will u die if u take it

10.0 g of calcium carbonate was heated. The mass of calcium oxide left was 5.6 g. Calculate the mass of carbon dioxide produced in the reaction. CaCO3 (s) + Cao (s) + CO2 (g)

Which of the following is not true of science? 1. Science offers proof of a claim 2. Science is a way of knowing 3. Science is a process 4. Science provides support or fails to provide support to claim

What happens to the velocity of a sound wave in air if the temperature of the air increases

Determine the [oh-] concentration of a 0.741 m koh solution at 25°c.

In the lab, students decomposed a sample of calcium carbonate by heating it over a Bunsen burner and collected carbon dioxide according to the following equation: CaCO3 (s) CaO (s) CO2 (g) (a) How many mL of carbon dioxide gas were generated by the

J. J. Thomson A) Electrons are in orbital levels. John Dalton B) Atoms are the smallest unit of an element. Ernest Rutherford C) Electrons are scattered within the atom. Niels Bohr D) Protons are at the center of an atom.