Chemistry High School

Structural formula of 2 ethyl, 4 methyl-Heptane​

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Structural Formula Of 2 Ethyl, 4 Methyl-Heptane

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what type of heat transfer takes place when you come in contact with a snow flake on a cold day?

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Answer:

Conduction

Explanation:

Conduction is how heat transfers through direct contact with objects that are touching. Any time that two objects or substances touch, the hotter object passes heat to the cooler object.

Answer:

Conduction

Explanation:

Conduction is how heat transfers through direct contact with objects that are touching. Any time that two objects or substances touch, the hotter object passes heat to the cooler object.

What is the percent composition of Phosphorus in Li3PO3

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Answer:

you will get 17.983 g of lithium for every 100 g of lithium phosphate.

Explanation:

69.7%  is the percent by mass of Lithium in  Li[tex]_3[/tex]PO[tex]_3[/tex]. A percent is obtained by multiplying the result by 100.

One approach to show the concentration for an element within a compound or component in a combination is as a mass percentage. The mass percentage is computed by dividing the total weight of the combination by the mass of each component and multiplying the result by 100%. The mass percent is calculated by dividing the mass that contains the compound and solute by the mass for the element or solute.

99.795g/mol = molar mass of  Li[tex]_3[/tex]PO[tex]_3[/tex]

6.94g/mol = molar mass of Li

mass percentage of Li=(molar mass of Li/molar mass of Li[tex]_3[/tex]PO[tex]_3[/tex])×  100

=(6.94/99.7)×  100

=69.7%

To know more about mass percentage, here:

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The general area of the atom (outside the nucleus) where the e- are located is the — and —

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Shells, electron levels, and electron cloud all fit here.

1. __N2 + __H2-> __NH3

2. __Fe + __HCl-> __H2 + __FeCl3

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Answer:

N2+ 3H2－> 2NH3

2Fe + 6HCl －> 3H2 + 2FeCl3

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