If you stretch back a rubber band and release it, it shoots across the room. What type of energy conversion has occurred?

mechanical to thermal

elastic to chemical

elastic to mechanical

mechanical to elastic

Calculate the molarity of na + ions in 135 ml of a solution containing 5.32 g nacl and 1.20 g na2so4.

The goal of this experiment is to separate a mixture of two unknown compounds into individual components and to identify the compounds. Answer the questions below. More than one answer may be possible.

What is the kinetic energy of a 150kg object that is moving with a speed of 15m/s?

The electronic configuration of an element is given below. 1s22s22p63s1 Which statement about the reactivity of the element is true? A. It is reactive because it has a full outermost energy level. B.

Which of the following reactions is endothermic? H2 (g) + ½O2 (g) → H2O (g), ΔH = - 57.82 kcal ½N2 (g) + O2 (g) + 8.1 kcal → NO2 (g) ½N2 (g) + 3/2H2 (g) → NH3 (g) + 11.0 kcal C (diamond) + O2 (g) → CO2, ΔH = - 94.50 kcal

Explain, in terms of electrons, why the radius of a calcium ion is smaller than the radius of a calcium atom.

The silkworm feeds on what

For the reaction? Fe+? H2o ⇀↽? Fe3o4+? H2, a maximum of how many grams of fe3o4 could be formed from 354 g of fe and 839 g of h2o? Answer in units of g

Quicklime (CaO) is produced by the thermal decomposition of calcium carbonate (CaCO3). Calculate the volume of CO2 at STP produced from the decomposition of 152 g CaCO3 by the reaction. CaCO3 - > CaO + CO2

What is the nearest star in Gemini