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xxTIMURxx [149]
2 years ago
13

N2H4 (I)--> N2 (g) + 2 H2(g)

Chemistry
1 answer:
photoshop1234 [79]2 years ago
4 0

Answer:

65.25 grams of water

Explanation:

Moles of H2 = mass/ M.w

= 7.25g /2

=3.625 mol H2

Moles of H2O = moles of H2 = 3.625 mole

Mass of H2O = mol * molar wight

= 3.625 * 18 = 65.25 g H2O

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6 0
2 years ago
Read 2 more answers
What is the change in internal energy ( ΔU ) of the system if q = –8 kJ and w = –1 kJ for a certain process?
Radda [10]

Answer:

Change in internal energy (ΔU) = -9 KJ

Explanation:

Given:

q = –8 kJ [Heat removed]

w = –1 kJ [Work done]

Find:

Change in internal energy (ΔU)

Computation:

Change in internal energy (ΔU) = q + w

Change in internal energy (ΔU) = -8 KJ + (-1 KJ)

Change in internal energy (ΔU) = -8 KJ - 1 KJ

Change in internal energy (ΔU) = -9 KJ

6 0
3 years ago
Lactose takes years to break down on its own. But if exposed to the protein lactase, the reaction proceeds very quickly, while l
sp2606 [1]

Answer:

Enzyme  

Explanation:

An enzyme is an organic catalyst that speeds up a reaction but can be recovered unchanged.

Human lactase consists of 4092 amino acid groups and has a molar mass of about 280 000 u, so it has a complex structure.

6 0
3 years ago
The two rate statements below are not the same. Use the concept of unit rates to explain
olganol [36]
It’s definitely B but I’m not sure
8 0
2 years ago
Which scientist discovered that the atomic number, rather than the atomic weight, is more responsible for the properties of an e
myrzilka [38]

<em>Answer:</em>

  • The correct option is Moseley who has discovered the atomic number.

<em>Explanation:</em>

  • In 1913, H. Moseley discovered a new properties of an element atomic number. He observed that elements in the periodic table can be arranged better according to atomic number rather than atomic mass.
  • The atomic number of any elements is always equal to numbers of electrons in it.
3 0
3 years ago
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