Answer:
A !!
Explanation:
because the equator is basically all the weather , so it cant be d , c , or b because in the artic is not hot and the desert cant be cold . so the answer is A
All chemical reactions have a conversation of mass and energy.
Because:- There are only two laws for conversation in a chemical reaction. The conversation of mass, no mass can be created nor destroyed. Also, the law of conversation of mass states that no energy can be created nor destroyed in a chemical reaction. The charge can obviously change because they can bond and change charges.
I can easily work out the molar mass of Ca3PO4 - but I do not see any reason to do this.
There is no such compound
If you want the molar mass of tricalcium phosphate , then the correct formula is Ca3(PO4)2 .
For purposes of calculating the molar mass it is easier to write: Ca3P2O8
Ca = 40.078g/mol *3 = 120.234g
P = 30.974g/mol *2 = 61.948g
O = 15.999g/mol *8 = 127.992g
Total = 310.174g/mol
Mass of 4.5 mol = 310.174g/mol *4.5mol = 1395.783g
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Related Questions (More Answers Below)
<u>Explanation:</u>
<u>Similarity between the two:</u>
Molecular formula and structural formula gives the exact number of atoms of different chemical elements that are present in a compound.
<u>Difference between the two:</u>
Structural formula gives us the relative positions of the atoms that are present in a compound whereas molecular formula does not give us the relative positions of the atoms. But it gives us the ratio of atoms in a given compound.
Answer: There are C - C bonds and C - H bonds.
trust me! I took a test with this question and got 100! :)