Answer: they giving you some hard question
Explanation:
i dont know know what the answer is do you have any answer options
OK,lisen to me slowly,
all define you.all thing
1.Look at peridoic table which one is solid or others.
For example:hydrogen is air.
And you gonna explain what is hydrogen,
2.After look periodic table you will be able to know every element.
3.Dont forget to check your homework.!!
The average atomic mass of Jz is 331.3 u.
The average atomic mass of Jz is the <em>weighted average</em> of the atomic masses of its isotopes.
We multiply the atomic mass of each isotope by a number representing its <em>relative importance</em> (i.e., its fractional abundance).
Thus,
⅗ × 329.1 u = 197.46 u
⅖ × 334.5 u = <u>133.80 u</u>
TOTAL = 331.3 u
Answer: 2 moles of water.
Explanation:
According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.
The combustion of propane is represented as :
![C_3H_8(g)+5O_2(g)\rightarrow 3CO_2(g)+4H_2O(g)](https://tex.z-dn.net/?f=C_3H_8%28g%29%2B5O_2%28g%29%5Crightarrow%203CO_2%28g%29%2B4H_2O%28g%29)
According to stoichiometry:
5 moles of
produces = 4 moles of ![H_2O](https://tex.z-dn.net/?f=H_2O)
2.5 moles of
will produce=
moles of
.
Thus 2 moles of water are produced by 2.5 moles of oxygen.
Answer:
When bonds between atoms break and new bonds are formed, creating a new Signs of a chemical reaction and therefore, the product is evident through physical gas atoms that make up its molecule and the covalent bonds between oxygen gas atoms attract and bond to form an ionic compound; magnesium chloride.
Explanation: