BIO HELP PLEASE??????? Science Assignment Help

BIO HELP PLEASE??????? Science Assignment Help. BIO HELP PLEASE??????? Science Assignment Help.

The splitting of water returns electrons to the chlorophyll of photosystem I.

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general chemistry question Science Assignment Help

For the reaction, calculate how many grams of the product form when 18.4g of Br2 completely reacts. 
Assume that there is more than enough of the other reactant.
2K(s)+Br2(l)2KBr(s)

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physical science 9th Science Assignment Help

You throw a ball to a friend that is 25 meters away (Distance). How fast was the ball traveling forward (velocity initial) when it left your hand if it takes 4 seconds (Time) to reach your friend? (Acceleration = 0)

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please help me with this question??? Science Assignment Help

The splitting of water replaces the electrons in chlorophyll of photosystem II.

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The Calvin cycle uses ATP.
Question 4 options:

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The boiling point of water/H2O is 100.00 °C at 1 atmosphere. If 13.58 grams of Science Assignment Help

The boiling point of water/H2O is 100.00 °C at 1 atmosphere. 

If 13.58 grams of ammonium nitrate, (80.06 g/mol), are dissolved in 153.5 grams of water …

The molality of the solution is  m.

The boiling point of the solution is  °C.

The boiling point of water/H2O is 100.00 °C at 1 atmosphere. If 13.58 grams of Science Assignment Help[supanova_question]

A sample of neon at a pressure of 1.00 atm and a temperature of 87.5 K is cooled Science Assignment Help

A sample of neon at a pressure of 1.00 atm and a temperature of 87.5 K is cooled at constant pressure to a temperature of 26.3 K. Which of the following are true?

Choose all that apply
One or more phase changes will occur.
The final state of the substance is a solid.
The sample is initially a gas.
The final state of the substance is a liquid.
The solid initially present will vaporize.

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The freezing point of water is 0.00°C at 1 atmosphere. How many grams of iron( Science Assignment Help

The freezing point of water is 0.00°C at 1 atmosphere. 


How many grams of iron(II) acetate (174.0 g/mol), must be dissolved in 266.0grams of water to reduce the freezing point by 0.350°C ?

 g iron(II) acetate.

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The freezing point of benzene C6H6 is 5.50°C at 1 atmosphere. A nonvolatile, non Science Assignment Help

The freezing point of benzene C6H6 is 5.50°C at 1 atmosphere. A nonvolatile, nonelectrolyte that dissolves in benzene is DDT 


How many grams of DDTC14H9Cl5 (354.5 g/mol), must be dissolved in 245.0grams of benzene to reduce the freezing point by 0.400°C ?

 g DDT.

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The boiling point of water is 100.0°C at 1 atmosphere. (Kb(water) = 0.512°C/m) Science Assignment Help

The boiling point of water is 100.0°C at 1 atmosphere. (Kb(water) = 0.512°C/m)   


How many grams of ammonium bromide (97.95 g/mol), must be dissolved in274.0 grams of water to raise the boiling point by 0.300°C ?

 g ammonium bromide.

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BIO HELP PLEASE??????? Science Assignment Help

BIO HELP PLEASE??????? Science Assignment Help