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torisob [31]
3 years ago
7

Help help please

Chemistry
1 answer:
ladessa [460]3 years ago
8 0

Substances that exist in solution almost completely as ions are called strong electrolytes. Therefore, the answer is C.

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2. Nitric oxide contains 46.66% nitrogen and 53.34% oxygen. Water contains 11.21% hydrogen and 88.79% oxygen. Ammonia contains 1
Mrrafil [7]

Answer:

The law of reciprocal proportions states that if two elements react individually with a given weight of a third element, the ratio of the masses with which they combine with the third element are either the same or a simple multiple of the ratio of the masses with which they combine with each other

The compounds formed includes;

1) Nitric oxide, NO

Nitrogen = 46.66% × 30.01 = 14

Oxygen = 53.34% × 30.01 = 16

2) Water, H₂O

Hydrogen = 11.21% × 18.01528 = 2

Oxygen = 88.79% × 18.01528 ≈ 16

3) Ammonia, NH₃

Hydrogen = 17.78% × 17.031 ≈ 3

Nitrogen = 82.22% × 17.031 ≈ 14

The ratio of nitrogen to oxygen in nitric oxide = 14:16 = 7:8

The ratio of nitrogen to hydrogen in ammonia = 14:3

The ratio in which hydrogen and oxygen combine with nitrogen = 3/16

The ratio of hydrogen and oxygen combine with each other in water = 2/16

Therefore, the ratio with which hydrogen and oxygen combine with nitrogen, is (2/3) times the ratio with which they combine with each other, which verifies the law of reciprocal proportions

Explanation:

4 0
3 years ago
2Al(s) + Fe2O3(s) → Al2O3(s) + 2Fe(s) T
brilliants [131]

Answer:

ΔHrxn = [(1) -1675.5 ( kJ/mole) + (2) 0 ( kJ/mole)] - [(1) -824.3 ( kJ/mole) + (2) 0 ( kJ/mole)]

Explanation:

ΔHrxn = 2ΔHf (Al₂O₃)  - ΔHf (Fe₂O₃)

Remember that for pure elements in their standard state of temperature and pressure by definition their standard heats of formation are zero.

ΔHrxn = 2(-1675.7) - (-824.3) kJ/mol

ΔHrxn = 2527 kJ/mol

6 0
3 years ago
The charge of an electron is <br> A. -2. <br> B. 0. <br> C. -1. <br> D. +1.
denis-greek [22]

the answer is


B. 0

yes that is all


4 0
3 years ago
Read 2 more answers
2. Solid sodium reacts with gaseous chlorine to produce sodium chloride.
stich3 [128]
2Na (s) + Cl2 (g) = 2NaCl (s)
8 0
3 years ago
In which of the following examples has a chemical reaction occurred?
katrin2010 [14]
"A" is the answer. The chemical reaction is when the batter becomes brown.

B is mixing C is mass becoming a liquid and D. is dissolving no chemical reaction happened there.

Hope that helps!
3 0
3 years ago
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