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scoundrel [369]
3 years ago
10

Any two difference between short sightedness and long sightednes​

Chemistry
1 answer:
SSSSS [86.1K]3 years ago
3 0

Explanation:

tala it is also called myopia lekhnu hai

Äni Arko MA it is also called hypermetropia .

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2 ways to incress the density of water
AlexFokin [52]
Low temperature in water and an increase in salinity.
3 0
4 years ago
when reacting with Na with Cl2, we calculated that the theoretical yield should be 13.0 grams. our actual yield was 12.5 grams.
navik [9.2K]

Answer:

Percentage yield is 96.15%

Explanation:

Theoretical yield = 13.0g

Actual yield = 12.5g

Percentage yield = ?

Equation of reaction

2Na + Cl₂ → 2NaCl

Percentage yield = (actual yield / theoretical yield) * 100

Percentage yield = (12.5 / 13.0) * 100

Percentage yield = 0.9615 * 100

Percentage yield = 96.15%

Percentage yield of NaCl is 96.15%

3 0
3 years ago
A mixture of neon and argon gases exerts a total pressure of 2.39 atm. The partial pressure of the neon alone is 1.84 atm, What
vredina [299]

Answer:

0.55 atm

Explanation:

According to Dalton's law of partial pressures,

The total pressure is the summation of the partial pressures of individual gases in a sample of non-reactive gases.

Since Neon and Argon are noble gases, they do not react with each other. So we can apply Dalton's partial pressure law.

P total = P Ar + P Ne

2.39 atm = P Ar+ 1.84 atm

P Ar = 2.39 atm - 1.84 atm

       = 0.55 atm

8 0
3 years ago
A lithium atom contains 3 protons , 4 neutrons and 3 electrons
Sergeu [11.5K]
Lithium atoms contain 3 protons, 3 electrons, and 4 neutrons, so the statement is Correct
3 0
3 years ago
Read 2 more answers
Which of the following pairs of elements will form ionic bonds with each
Thepotemich [5.8K]

Answer:

B. Lithium (Li) and iodine (1)

Explanation:

Ionic bond is a type of chemical bond that is formed between a metallic element and a non metallic element. The positive charge of the metallic ion is attracted to the negative charge of the non metallic ion to form an ionic bond.

According to the options given in this question, lithium and iodine will form an IONIC bond because lithium is a cation (+ve ion) while iodine is an anion (-ve).

8 0
3 years ago
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