Hi i need hel does any one know what P3N2 means ??? .-.

Answers

Answer 1

Answer: P=phosphorus
N=nitrogen
P3N2 is triphosphorus dinitrogen (a covalent compound)

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HNO3 increases the concentration of ____ when added to water

Answers

Since HNO3 is a strong acid, it would dissociate completely forming ions of H+ and NO3-. The ionization or dissociation of HNO3 will increase the concentration and or amount of H+ within the water, resulting in the pH or measure of H+ to decrease, indicating that the solution is tending to become acidic.

If a pH of water is 5.3 then 4.3 is it 1.0 less acidic 1.0 less basic

Answers

The pH of water is 7
5.3 to 4.3 is more acidic. 1 pH is more acidic than 2 pH The base starts at 8.

It would be 1.0 less basic, 1.0 more acidic

For any given reaction, which of the following will speed up the reaction rate? a)increase the temperature
b)add a catalyst
c)increase the surface area
d)All of the choices are correct.
e)None of the choices are correct.

Answers

All of the choices are correct. Catalysts increase reaction rate by lowering the activation energy of a reaction. When you increase both the temperature and surface area you are just increasing the number of collisions which also increases the reaction rate since the reaction happens when molecules or atoms collide in the correct orientation and with enough energy and you are increasing the number of times that happens in a given time period.

I hope this helps. Let me know in the comments if anything is unclear.

Molarity. 0.5 GRAMS of sodium chloride is dissolved to make 0.05 liters of solution.

would it be the same as..

0.5 MOLES of sodium chloride is dissolved to make 0.05 liters of solution?

please help me with the grams. thank you (: first time using this!

Answers

Find if the same solution would be equal:
=> 0.5 grams of Sodium chloride dissolved in 0.05 liters solution
=> 0.5 moles of sodium chloride dissolved in 0.05 liters solution
The answer is NO. They are not equal because 0.5 grams of sodium chloride is equivalent to 10 moles of sodium chloride which makes 0.5 grams of sodium chloride mixed with 0.05 liters of solution more concentrated than 0.5 moles of sodium chloride dissolved in 0.05 liters of solution.

A 5.00L balloon filled with 1.00 moles of O2 gas contains a total of how many liters?

Answers

To solve this we assume that the gas inside the balloon is an ideal gas and at STP. At standard temperature and pressure, it has been known that for 1 mol of a gas, the volume of this gas would be 22.4L. Therefore, the volume of O2 gas in the balloon would most likely be 22.4L.

Express the answer in scientific notation and with the correct number of significant figures: (6.32 x 10-4) ÷ 12.64Your answer should have the same number of significant figures as the starting measurement.

872.4 mm =

Answers

Answer:

$5.00*10^(-5)$

Explanation:

$(6.32*10^(-4) )/(12.64) = 0.00005= 5.00*10^(-5)$

The answer is in three significant figures because that is the least number of significant figures in any of the numbers involved in the calculation

Express the answer in scientific notation and with the correct number of significant figures:
(6.32 x 10-4) ÷ 12.64
5.00 x 10^-5

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