Which tools are used to measure weather? Choose all answers that are correct. A. barometer B. rain gauge C. anemometer D. speedometer

Type the correct answer in the box. Jay, Kip, and Tia are each measuring the concentration of a solution. They are doing experiments separately. They are all are using a colorimeter-a device used for measuring colors.

What is true of synthesis and decomposition reactions? O Synthesis reactions require more energy than decomposition reactions. Synthesis reactions produce more products than decomposition reactions.

What are the characteristics of a neuton

What is the net ionic charge of a calcium ion? A. + 1 B. - 1 C. - 2 D. + 2

Determine the speed of sound at 20 oC in (a) air, (b) helium, and (c) natural gas (methane). Express your answer in m/s.

Which containe the most moles: water, aluminum, salt, baking soda

A 806.3 ng sample of an unknown radioactive substance was placed in storage and its mass measured periodically. after 47 days the amount of radioactive substance had decreased to 100.8 ng.

How does one determine a percent composition from an empirical formula.

N an exothermic reaction, what is true of the enthalpy? A. It has increased. B. It has decreased. C. It has remained unchanged. D. It has, at minimum, doubled.

Which of the following is not a property of a metal? Luster Malleability Permeability Ductility