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Which family of elements has a full outer shell of electrons?

Noble Gases

Which of the following is true about the mass of an object? a. Mass depends on location. b. Mass is a measure of gravity. c. Mass is always the same. d. Mass depends in part on weight

Mass is always the same.

Which of these physical structures in animals is similar to this structure in plants?

Well done, class. You all have correctly pointed out that the exoskeleton provides support and protection for various organisms such as insects and crustaceans. Explanation: As we have learned in previous lessons, the exoskeleton is a hard, external structure made of chitin that encases the entire body of many arthropods. This provides mechanical support for their muscles, as well as protection from predators and environmental factors. Similarly, terrestrial and freshwater crustaceans have exoskeletons that not only protect them, but also serve as a barrier to water loss. In summary, the exoskeleton is a critical feature for many organisms' survival and serves several important functions.

Which element is this? [xe] 6s24f145d10 A. Lead B. Ferum C. Zinc


How many atoms are present in 6 moles of Al(s) in the following reaction? 2Al(s) + 3 CuSO+ (aq) - › Al2 (SO4)3 (aq) + 3 Cu(s)

3.6 × 10²⁴ atoms

Why does aluminum degrade much more slowly than iron despite being a more active metal?

Aluminum oxide coats the exposed aluminum surfaces preventing further corrosion.

How would you properly respond to the question 'te gusta ir a la escuela' in Spanish?

In Spanish: Sí, me gusta ir a la escuela. In English: Yes, I enjoy going to school.

Carbon monoxide and nitrogen monoxide react to produce carbon dioxide and nitrogen gas. if the system contains platinum, then less energy is required for the reaction to occur. which term best describes the role of platinum in the system? a.) reactant b.) product c.) catalyst d.) energy​


What is the phenotype of a tomato plant with one allele for red skin (R) and one for yellow skin (r)?

Red skin

Which one of the following compounds is insoluble in water? A) Na2CO3 B) K2SO4 C) Fe(NO3)3 D) ZnS E) AgNO3

D) ZnS is insoluble. Explanation: The water solubility of ZnS is extremely low, making it unable to dissolve in water. Therefore, it can be classified as insoluble.