True or false? minerals are identified on the basis of their physical properties

How would your experimental formula of magnesium chloride "MgClx" have been affected if your product was not dried completely before weighing it? Would "x" be too high or two low?

Why nucleus of an atom is negatively charged?

Hat discovery led Darwin to develop his theories on adaptation? A. The Galapagos islands contain a range of habitats. B. The Galapagos islands originate from volcanoes. C.

Which term describes the maintenance of a stable internal condition a.) endosytosis b.) homeostasis c.) mitosis d.) photosynthesis

For the following hypothetical reaction: 3A+9B-->5C How many moles of B will you need to convert 2 moles of A into as many moles of C as possible? Enter just the number; not the number and units

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.