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3 years ago

SOS PLEASE HELP ME

Chemistry

1 answer:

Kryger [21]3 years ago

6 0

Molecules are made of multiple atoms. Protons and Neutrons are subatomic.

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During which change of state would the volume of a substance increase the most?

Alika [10]

Answer:

The most state has the high volume is the gas state.

So here the answer is vaporization!!!!

Explanation:

The most state has the high volume is the gas state.

So here the answer is between vaporization and sublimation???

and when the sublimation is: the change of the material from the solid state to the gas state directly without pass to liquid state from the solid first then to the gas

and the vaporization is : The change of the material from the liquid state to the gas state by heating Ex: water vaporize at 100°

here, the answer is sublimation because the difference of volume which resulted from this process is more than the volume resulted from vaporization.

Plz mark brainlist!!

4 0

3 years ago

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Vinegar is an aqueous solution of acetic acid, ch3cooh. a 5.00 ml sample of a particular vinegar requires 26.90 ml of 0.175 m na

Fed [463]

The molarity of acetic acid in the vinegar is 0.94 M

<u><em> calculation</em></u>

Step 1: write the balanced equation between CH3COOH + NaOH

that is CH3COOH + NaOH → CH3COONa + H2O

step 2 : find the moles of NaOH

moles =molarity x volume in L

volume in liters = 26.90/1000=0.0269 l

moles = 0.175 mol /L x 0.0269 L =0.0047 moles of NaOH

Step 3: use the mole ratio to find moles of CH3COOH

that is the mole ratio of CH3COOH: NaOH is 1:1 therefore the moles of CH3COOH is =0.0047 moles

Step 4: find the molarity of CH3COOH

molarity = moles/volume in liters

volume in liter = 5.00/1000 =0.005 l

molarity is therefore=0.0047 moles/ 0.005 l = 0.94 M

4 0

4 years ago

) Consider the starting materials and reagents. What do you expect to happen at the beginning of this reaction (Boxes 1-3 on the

tekilochka [14]

Answer:

Check the explanation

Explanation:

functional group found in the major organic product = alpha -beta unsaturated ketone

Reaction used to form this functional group = Michael condensation reaction

Also other reactions are - Aldol condensation , Robinson annulation reaction.

Kindly check the attached image below to see the step by step solution to the question above.

3 0

3 years ago

Which star has the highest surface temperature

Mashcka [7]

Answer:

The blue star is the hottest star.

Explanation:

Red stars are cooler than the sun, with surface temperatures of 3,500 K for a bright red star and 2,500 K for a dark red star. The hottest stars are blue, with their surface temperatures falling anywhere between 10,000 K and 50,000 K

8 0

3 years ago

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What is the shortest wavelength in the Balmer series

MissTica

The largest energy release will take place when the electron jumps between the greatest number of levels. In this case from infinity down to 2

This is the emitted photon with the most energy ( in the Balmer series), the highest frequency and therefore the shortest wavelength.

Balmer's original formula was

Wavelength = 3645.6 . 10^–10 ( n^2 / (n^2 – 4) )

When n => infinity

Wavelength = 3.6456 . 10^–7 m ( or 364.5 nm)

7 0

3 years ago

Read 2 more answers