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3 years ago

8

Two formulas for compounds containing hydrogen and oxygen are H2O and H2O2. Do these formulas represent the same compound ? Expl

ain.

1 answer:

bekas [8.4K]3 years ago

3 0

Answer:

no

Explanation:

H2O means water but H2O2 means hydrogen peroxide

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HURRY 10 POINTS!!!

sergij07 [2.7K]

A. charged particles

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3 years ago

It takes 42.25 ml of 0.0500 M Na2S2O3 solution to completely react with the iodine present in a 150.0 ml iodine solution. How ma

svlad2 [7]

Answer:

There were 0.268 grams I2 present

Explanation:

Step 1: Data given

Volume of Na2SO3 = 42.25 mL = 0.04225 L

Molarity of Na2SO3 = 0.0500 M

Volume of iodine = 150.0 mL

Step 2: The balanced equation

I2 + 2 Na2SO3 → Na2S2O6 + 2 NaI

Step 3: Calculate moles of Na2SO3

Moles Na2SO3 = molarity * volume

Moles Na2SO3 = 0.0500 M * 0.04225 L

Moles Na2SO3 = 0.0021125 moles

Step 4: Calculate moles I2

For 1 mol I2 we need 2 moles Na2SO3

For 0.0021125 moles Na2SO3 we have 0.00105625

Step 5: Calculate mass of I2

Mass I2 = moles * molar mass

Mass I2 = 0.00105625 * 253.8 g/mol

Mass I2 = 0.268 grams

There were 0.268 grams I2 present

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4 years ago

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Sodium forms a 1+ ion, while fluorine forms a 1-lon. Write the electron configuration for each ion. Why don't these two elements

jok3333 [9.3K]

Answer:

Explanation:

Given elements:

Sodium

Fluorine

The ion Na⁺ is made up of 10 electrons, its electronic configuration is:

1s² 2s² 2p⁶

Ion F⁻ is made up of 10 electrons, its electronic configuration is:

1s² 2s² 2p⁶

These ions do not form +2 because they cannot attain stability by losing or gaining two electrons.

Sodium atom is made up of one valence electron. If it loses one electron, it will be isoelectronic with Neon.

Fluorine has 7 valence electrons, to attain stability, it must gain one electron to form an octet. This way it will be isoelectronic with Neon.

Losing or gaining two electrons will not make the elements attain stability.

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3 years ago

If a balloon with a volume of 10L at 500kpa is heated until the balloon has a temperature of 300°C, 750atm and now has a volume

valentinak56 [21]

Answer:

103.6°C

Explanation:

We solve this problem, with the Ideal Gases Law. We know that moles of gas are not changed through time.

P . V = n . R . T

So n (number of moles) and R (Ideal Gases constant) are the same, they are cancelled. In the two different states, we can propose:

P₁ . V₁ / T₁ = P₂ . V₂ /T₂

We need to make some conversions:

100 mL . 1 L/ 1000mL = 0.1L

500 kpa . 1atm / 101.3 kPa = 4.93 atm

300°C + 273 = 573 K

We replace data:

4.93 atm . 10L / T₂ = 750 atm . 0.1L / 573K

4.93 atm . 10L = (750 atm . 0.1L / 573K) . T₂

(4.93 atm . 10L) / (750 atm . 0.1L / 573K) → T₂

T₂ = 376.65 K

We convert K to °C → 376.65 K - 273 = 103.6 °C

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4 years ago

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