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aliya0001 [1]
3 years ago
8

How many moles are in 48.0g of H2O2?

Chemistry
1 answer:
Tju [1.3M]3 years ago
3 0

Answer:

1.41 moles H2O2(with sig figs)

Explanation:

okay so what is the molar mass of H2O2= (1.008 g/mol)2+(16.00g/mol)2= (2.016+ 32.00) g/ mol

= 34. 02 g/mol

48.0g H2O2* 1 mol H2O2/ 34.02 g H2O2= 1.41 mol H2O2

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a gas cylinder contains 2.0 mol of gas X and 6.0 mol of gas Y at a total pressute of 2.1 atm. what is he partial pressure of gas
Igoryamba

The answer is 1.6 atm. Let's first calculate the mole fraction of gas Y.

The mole fraction (x) is: x = n1/n, where n1 is a number of moles of an

individual gas in a mixture and n is total moles of the gas mixture. We

know that n1 of gas Y is 6.0 mol (n1 = 6.0 mol) and that there are in

total 8. mol of the gas mixture (n = 2.0 + 6.0 = 8.0 mol). Now calculate

the mole fraction of gas Y. x = 6.0/8.0 = 0.75. Now, let's use the mole

fraction of gas Y (x) and the total pressure (P) to calculate the

partial pressure of gas Y (P1): x = P1/P. P1 = x * P. If x = 0.75 and P =

2.1 atm, then the partial pressure of gas Y is: P1 = 0.75 * 2.1 atm =

1.6 atm.

6 0
4 years ago
Read 2 more answers
0.450 kg of gasoline is spilled. If the ​density​ of gasoline is 0.665 g/mL, what ​volume​ of gasoline is spilled?
belka [17]

0.276 kg

Explanation:

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3 0
3 years ago
Among these element groups, which is least likely to form ions?: 7A 3A 1A 4A
natta225 [31]

The  element  group  which  is least  likely  to form ions  is 4A  group


 <u><em>explanation</em></u>

Element   of   group  4A   has   4  valence  electrons.  for example Carbon which has   [He] 2S2 2P2  electron configuration has 4 valence electrons.

Since 4A elements has 4 valence electrons ,  it means  that  their valence shell  is half  filled which is  relatively stable. <em>For  this reason 4A element readily  form  ions.</em>

7 0
3 years ago
Blood ph is kept near a value of 7.3 - 7.5 because of
Ede4ka [16]

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Acidic pH can cause the medical urgency known as acidosis leading to vomiting, diarrhea etc.

If the pH becomes higher, then the blood will become basic in nature and it can also leas to the death of the person.

That is why the pH of the blood is maintianed at neutral value of 7.0 to 7.5

5 0
4 years ago
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Write the symbol for every chemical element that has atomic number greater than 70 and atomic mass less than 185.2
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Answer:

HF...Ta... W....Lu...

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