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Dennis_Churaev [7]
3 years ago
11

How many atoms of hydrogen are in 170 g of hydrogen peroxide (h2o2)?

Chemistry
1 answer:
Ede4ka [16]3 years ago
5 0

I am pretty sure the answer is 1.5*10^25
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Please help!
kiruha [24]

Answer:

The energy decreases as you move from the bottom to the top of the energy pyramid. 90% of the energy entering each step of the pyramid is used up by the consumers, only 10% of the energy get stored. So, when the next level on the pyramid eats them, that 10% gets passed down to them Use the diagram below to answer the question.

Explanation:

I am sorry if I am wrong

And can you give me brainliest please

I just joined today

3 0
2 years ago
A solution is prepared by dissolving ammonium sulfate in enough water to make of stock solution. A sample of this stock solution
Pani-rosa [81]

Answer: molarity of ammonium ions = 0.274mol/L

molarity of sulfate ions = 0.137mol/L

<em>Note: The complete question is given below</em>

A solution is prepared by dissolving 10.8 g ammonium sulfate in enough water to make 100.0 mL of stock solution. A 10.00-mL sample of this stock solution is added to 50.00 mL of water. Calculate the concentration of ammonium ions and sulfate ions in the final solution.

Explanation:

Molar concentration = no of moles/volume in liters

no of moles = mass/molar mass

mass of ammonium sulfate = 10.8g, molar mass of ammonium sulfate, (NH₄)₂SO₄ = (14+4)*2 + 32+ (16)*4 = 132g/mol

no of moles = 10.8g/132g/mol = 0.0820moles

<em>Molarity of stock solution = 0.0820mol/(100ml/1000ml* 1L) = 0.0820mol/0.1L Molarity of stock solution = 0.820mol/L</em>

Concentration of final solution is obtained from the dilution formula,

<em>C1V1 = C2V2</em>

C1 = 0.820M, V1 = 10mL, C2 = ?, V2 = 60mL

C2 = C1V1/V2

C2 = 0.820*10/60 = 0.137mol/L

molar concentration of ions = molarity of solution * no of ions

molarity of ammonium ions = 0.137mol/L * 2 = 0.274mol/L

molarity of sulfate ions = 0.137 mol/L * 1 = 0.137mol/L

4 0
3 years ago
Calculate the number of molecules in a deep breath of air whose volume is 2.15 L at body temperature, 37 ∘C, and a pressure of 7
Zinaida [17]
PV = nRT 
R = 0.0821 L * atm / mol * K 
(ideal gas constant) 

First, convert 735 torr to atm. Divide by 760. 
(1 atm = 760 torr) 

735 torr * 1 atm / 760 torr = 0.967 atm 
Then, convert 37 C to Kelvin. Just add 273. 
37 C = 310K 

n = PV / RT 
= (0.967)(2.07) / (0.0821)(310) 
= 0.0786 mol 

<span>0.0786 mol * 6.02 * 10^23 molecules / 1 mol = 4.73 * 10^22 molecules </span>
7 0
3 years ago
Read 2 more answers
Question 10
zepelin [54]
Because the ring is hollow
3 0
3 years ago
White vitriol molecular formula<br>and green vitriol molecular formula??​
IgorC [24]

Answer:

<em>Green</em><em> </em><em>vitriol</em><em>-</em><em> </em><em>FeSO4·7H2O</em>

<em>white</em><em> </em><em>vitriol</em><em>-</em><em> </em><em>ZnSO₄</em>

8 0
2 years ago
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