What did scientists learn from the information found on seismographs?

how deep the ocean is

the structure of the Earth's crust

the depth and density of Earth's layers

the elements present in the interior

When a 3.80 g sample of magnesium nitride (MW 101g/mol) is reacted with 3.30 g of water, 3.60 g of MgO is formed. What is the percent yield of this reaction? Mg3N2 + 3 H2O - - > 2 NH3 + 3 MgO

Which atom has the largest atomic radius? K Br Ca Kr

Write the structure (s) for the organic product (s) of the carbohydrate reaction below. excess acetic anhydride

Witch is the best discription of a molecule

How does the law of conservation of mass apply to this reaction: Mg + HCl > H2 + MgCl2?

Why is crushed ice used for snow cones

A gas mixture contains CO, Ar and H2. What is the total pressure of the mixture, if the mole fraction of H2 is 0.35 and the pressure of H2 is 0.58 atm?

Student follow up The ionic equation for the reaction between zinc and sulfuric acid is. Zn (s) + 2H (aq) - - Zn" (aq) + H2 (g) a State what has been oxidised in this reaction. Explain your answer in terms of electrons.

What is required for reactants to form bonds? energy output energy input equilibrium exchange reaction

Check out the list of scientific names. These names all represent animals. These are all animals but they cannot reproduce to produce fertile offspring with each other.