4. a compound takes on (4 points) a mixture of the properties of the elements that composes it entirely new properties than the elements that composes it the properties of the most abundant element that composes it the properties of the strongest element that composes it 5. compounds can be separated by (4 points) temperature chemical means pressure physical means 6. all atoms of the same element must have the same number of electrons. neutrons. protons. compounds. 7. when a metal bonds with a nonmetal, they form a(n) (4 points) element ionic compound covalent compound molecule 8. the compound fes is an example of a(n) (4 points) covalent compound atom ionic compound element 9. which of the following measurements changes based on the strength of gravity? (4 points) size length weight mass 10. the model below shows a calcium atom. how many electrons are in the third energy level? 8 20 2 18

A compound takes on entirely new properties from the elements that it is composed from. There are many chemical bonds broken and made for new chemical compound to be formed which changes the properties of the new compound than the elements.

A compound can be separated by chemical means only unlike mixtures which can be separated by physical means.  Compound has to be chemically destroyed into elements.

All atoms of the same element must have the same number of protons but can differ in number of neutrons.  In the process of covalent compounds they share electron and in ionic form they lose electrons. So, electrons are not always same for the same element.

When metal forms bond with a nonmetal it usually forms an ionic compound.  Ionic bonds are formed when metal loses an electron and a non metal gains that electron.

The compound FeS is an example of an ionic compound as Fe is the metal and S is a non metal.

Weight is influenced by the strength of gravity rest other factors remains unaffected by the gravity.

Calcium atom has 20 electrons in its atom.

Which is further divided into 4 different energy levels 2,8,8,2.

Where 1st has 2 electrons, 2nd has 8 electrons and 3rd has 8 electrons and 4th also has 2 electrons.

1.consider the following balanced equation and answer parts a through. show calculations for each part.  

3 ag(s) + 4 hno3(aq) → 3 agno3(aq) + no(g) + 2 h2o(l)  

a. calculate the number of moles of agno3 produced by the reaction of 3 moles of ag with excess hno3. if the number to the left of the compound represents the number of moles of the compound which are present, then 3 moles of ag react with 4 moles hno3 to produce 3 moles agno3 (aq).

so the answer to a would be 3 moles.

b. calculate the number of moles of agno3 produced by the reaction of 108 grams of ag with excess hno3.  

i'm not sure how to plug in the grams of silver into an equation using moles to find how many moles are produced.

c. calculate the number of grams of agno3 produced by the reaction of 108 grams of ag with excess hno3  

d. calculate the number of moles of no produced as a byproduct of the reaction of 108 grams of ag with excess hno3.  

e. calculate the number of grams of no produced as a byproduct starting with 108 grams of ag and excess hno3.  

explanation:

a boiling water reactor does not boil the water. a pressurized water reactor boils the water faster. a pressurized water reactor is heated directly by the core. a pressurized water reactor does not use fission.