How do you test a substance for a chemical property

A cube of butter weighs. 254 pounds and has a volume of 129.4 milliliters what is the density

Land features, such as Palo Duro Canyon in Texas, are shaped by the gradual wearing away due to Question 5 options: gravity. faulting. water erosion. mountain building.

What carries more information low frequency radio waves or high frequency waves

Select all that apply. What is common about the elements of a period? They have the same number of electron shells. They have similar chemical characteristics. They have similar physical characteristics. They transition from a metal to noble gas.

Which particle of the atom has a positive charge? A. proton B. electron C. nucleus D. neutron

How should scientist respond when new evidence that challenges current is presented?

Consider the following reaction, equilibrium concentrations, and equilibrium constant at a particular temperature. Determine the equilibrium pressure of H2. D2 (g) + H2 (g) ⇌ 2 HD (g) Kp = 1.80 P (D2) eq = 1.1 * 10-3 atm P (HD) eq = 2.7 * 10-3 atm

Find δe for the change in state of 1.0 molh2o (l) at 79 ∘c to h2o (g) at 116 ∘c. the heat capacity of h2o (l) = 75.3 j/molk, heat capacity of h2o (g) = 25.0 j/molk, and the heat of vaporization of h2o is 40.7*103j/mol at 100 ∘c.

Balloon A started with a volume of 1.76 L. The temperature of the room the balloon was in was 295 K. The balloon was heated to a temperature of 253.15 K. What is the new volume?

The standard internal energy change for a reaction can be symbolized as ΔU°rxn or ΔE°rxn. For the following reaction equations, calculate the energy change of the reaction at 25 °C and 1.00 bar. Sn (s) + Cl2 (g) - - - > SnCl4 (l) + H (KJmol) - 511.3.