Earth's layers are made up of different elements true or false?

What role does the salt bridge play in a voltaic cell? It allows electrons to flow from the anode to the cathode. It allows migration of ions from one half-cell to the other. It contains the electrodes. It creates the oxidation reaction.

What is the resulting formula unit when calcium and sulfur bond?

Is quartz (SiO2) a substance or mixture?

Which of the following fractions can be used in the conversion of 500 mL to the unit m3?

If the specific heat of aluminum is 899 J/kg °C and the specific heat of water is 4190 J/kg °C, which of the following statements is true? A. It takes more energy to heat 1 kg of water 1°C than it does to heat the same amount of aluminum. B.

True or false: the hydrogen atom is most stable when it has a full octet of electrons.

Is it illegal for fracking companies to let water that has been used for fracking deep back into the ground?

Classify each substance as a pure substance or a mixture. If it is a pure substance, classify it as an element or a compound. If it is a mixture, classify it as homogeneous or heterogeneous. a. Sweat b. Carbon dioxide c. Aluminum d. Vegetable soup

Which describes energy changes during nuclear fission? A very large amount of energy is produced from a tremendous mass. EEUU A very large amount of energy is produced from a very small mass. G .

For 2H2 + O2 → 2H2O: 4 moles of H2 will react with moles of O2 to produce moles of H2O