1. ¿Cuál de las siguientes oraciones revela la idea central del texto? RI.2
A. la basura marina y los peligros que enfrentan las tortugas
B. la importancia de los combustibles fósiles para la producción de
plástico
C. el exceso de plástico en la naturaleza y el daño que provoca a las
personas
D. el daño en la vida marina y en el ambiente que producen las bolsas de
plástico
Answers: 2
Chemistry, 21.06.2019 13:30
One of the reactions in a blast furnace used to reduce iron is shown above. how many grams of fe2o3 are required to produce 15.5 g of fe if the reaction occurs in the presence of excess co? a.11.1 g b.22.1 g c.30.0 g d.44.2 g
Answers: 2
Chemistry, 22.06.2019 05:30
Match the following vocabulary terms to their definitions. 1. amount of energy required to change 1 gram of material from the solid to the liquid state at its melting point 2. a measure of the kinetic energy of the particles of a substance 3. the amount of heat energy required to raise the temperature of 1 gram of liquid water from 14.5°c to 15.5°c 4. amount of energy required to change 1 gram of material from the liquid to the gaseous state at its boiling point 5. the amount of energy required to change 1 gram of a substance 1°c a. temperature b. latent heat of vaporization c. latent heat of fusion d. calorie e. specific heat
Answers: 1
Chemistry, 22.06.2019 23:30
With the largest atoms and the smallest number of valence electrons and with the smallest atoms and the greatest number of valence electrons are the most reactive. a. nonmetals; metals b. nonmetals; transition elements c. transition elements; metals d. metals; nonmetals
Answers: 3
Chemistry, 23.06.2019 03:30
The semi-conductors on the periodic table are classified as
Answers: 1
1. ¿Cuál de las siguientes oraciones revela la idea central del texto? RI.2
A. la basura marina y l...
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