Explain to to me about lanthanum

Describe how you think the tiny dust particles acquired a charge.

Calculate the kinetic energy (in joules) of a mole of water molecules traveling at 11.7 m/s.

Under what conditions does an increase in temperature turn a nonspontaneous process into a spontaneous process? Choose one or more: a. ΔH 0 b. ΔH > 0, ΔS > 0 c. ΔH > 0, ΔS < 0 d.

What is the relationship between monosaccharide and polysaccharide

A substance is followed by the symbol (l) in a chemical equation. What does the symbol represent? A. The substance has the least molecules in the equation. B. The substance is in the liquid state. C. The substance is produced last in the reaction. D.

Whats the mass number of the atom 86/36 Kr?

An apple is placed on a scale. the scale shows that the apple weighs 1/4 a pound. this demonstrates that the apple has A: Atoms. B: Elements. C: Vitamins. D: Weight.

Identify Cobalt sulfride

If the reactants have a potential energy of 10.2 kJ/mol and the products have a potential energy of 15.7 kJ/mol, what is AH?

How to solve determine the final temperature when 450.2 grams of aluminum at 95.2°c is placed in an insulated calorimeter with 60.0 grams of water at 10.0°c?