Which of the following is a valid mole ratio from the balanced equation 2Fe2O3 + 3C - 4Fe + 3CO2? 2 mol Fe,
O
4 mol Fe
4 mol C
3 mol Fe
2 mol Fe, o,
4 mol C
3 mol C
4 mol CO2

In which of these cases are the two wave points considered to be in phase with each other?

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal.b. he is determining chemical properties that are sufficient to identify the metal.c. he is determining physical properties that are insufficient to identify the metal.d. he is determining chemical properties that are insufficient to identify the metal.

What energy conversion occurs when a sling shot is used to shoot a rock across the room? (2 points) question 2 options: 1) stored mechanical energy is converted to mechanical energy. 2) stored mechanical energy is converted to radiant energy. 3) gravitational energy is converted to radiant energy. 4) gravitational energy is converted to mechanical energy.