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Kobotan [32]
3 years ago
12

plate tectonics is a widely accepted theory due to the amount of evidence for it. list four pieces of evidence. plz help!!!!!

Chemistry
1 answer:
babymother [125]3 years ago
4 0
I know that the east side of South America fits into the west side of Africa almost perfectly, but not sure if that counts as evidence.
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Please help me, I really don't want to fail but I don't know how to do this
Brrunno [24]

Answer:

A)

<u>4, 7, 4, 6</u>

B)

<u>12 moles</u>

Explanation:

NH_{3}(g) + O_{2}(g) \: → NO_{2} + H_{2}O(g)

__↑______↑

8.00 mol | 14.00 mol

________________

NH_{3}(g) + O_{2}(g) \: → NO_{2} + H_{2}O(g)

You can turn this into a system of variables which are solvable.

To do this, create variables for the coefficients of each compound in the reaction respectively.

a(NH_{3}(g)) + b(O_{2}(g)) → \\c(NO_{2}) + d(H_{2}O(g))

Because to be balanced, the count of atoms in each element of the compound correspond to the coefficient of the variable in that compound so that the count of the left (reactant) side is set equal to the right (product) side.

a corresponds to the coefficient of the first compound, b corresponds to the coefficient of the second compound, c corresponds to the coefficient of the third compound, and d corresponds to the coefficient of the fourth compound.

(Reactant = Product)

Reactant: 1a [N] Product: 1c.

Reactant: 3a [H] Product: 2d.

Reactant: 2b [O] Product: 2c + 1d.

Thus the system is:

1a = 1c

3a = 2d

2b = 2c + 1d.

Then just use the substitution methods to solve.

3 0
2 years ago
_____________________ held that all matter is made up of four “elements”— earth, air, fire, and water.
Novosadov [1.4K]

Answer:

Democritus

Explanation:

He spoke about matter was made of tiny particles which moved in empty space

4 0
3 years ago
How ph relate with poh
mylen [45]
<span>The "p" in pH and pOH stands for "negative logarithm of" and is used to make it easier to work with extremely large or small values. pH and pOH are only meaningful when applied to aqueous (water-based) solutions. </span>
3 0
3 years ago
Read 2 more answers
লবণ ও বালুর মিশ্রন পরীক্ষা<br>​
bija089 [108]

Answer:

cause it has more

space between molecules.

O C. Ice has a higher density than li

Explanation:

3 0
3 years ago
Write a chemical equation for LiOH(aq) showing how it is an acid or a base according to the Arrhenius definition.
goldenfox [79]

Answer:

LiOH(aq) → Li⁺(aq) + OH⁻(aq). 

4 0
3 years ago
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