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4 years ago

Calculate how many moles of NH3 form when each quantity of reactant completely reacts according to the equation:

1 answer:

4 0

<span>we are given with the equation 3N2H4(l) => 4NH3(g) + N2(g) that shows the decomposition of N2H4 to give ammonia and nitrogen gas. 3 moles of N2H4 forms 4 moles of NH3. When 2.6 moles N2H4 are used, 3.47 moles of ammonia is formed</span>

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Which process responsiblr for the growth a repair pf human tissue?

Alenkasestr [34]

Hey there!

"Which process responsible for the growth a repair of human tissue?"

$1. evolution$
$2. germination$
$3. cell$ $division$
$4. natural$ $selection$

Well, it heals itself which is called the mitosis but none of those are your answer choices .. the one that seems to be closer to those two results would be: Option 3. $\boxed{cell-division}$

Therefore, your answer would most likely be: $\boxed{cell-division}$

Good luck on your assignment and enjoy your day!

~ $LoveYourselfFirst:)$

8 0

3 years ago

Around four hundred million years after the formation of Earth, the planet's atmosphere would have been almost entirely _____.

Olegator [25]

the answer is option d

4 0

4 years ago

Read 2 more answers

Which statement is true about the speed of light

Sedbober [7]

Answer:

nothing can travel faster than light

In vacuum it is 186282 miles per second

Explanation:

5 0

4 years ago

For which of the following elements is the number of neutrons correctly represented, based on the atomic number and mass number

Helga [31]

Answer: A. iron: atomic number 26, mass 56, neutrons 30

Explanation:

Atomic number = proton = 26

Mass number = 56

Mass number = proton + Neutron

56 = 26 + Neutron

Neutron = 56 - 26

Neutron = 30

8 0

3 years ago

Identify the nuclide produced when neptunium-237 decays by alpha emission:

snow_tiger [21]

Answer:

$_{91}^{233}\textrm{Pa}$

Explanation:

In a nuclear reaction, the total mass and total atomic number remains the same. It is mentioned that the a alpha particle, $^4_2\textrm{He}$ is being emitted.

For the given fission reaction:

$^{237}_{93}\textrm{Np}\rightarrow ^A_Z\textrm{X}+^4_2\textrm{He}$

To calculate A:

Total mass on reactant side = total mass on product side

237 = A + 4

A = 233

To calculate Z:

Total atomic number on reactant side = total atomic number on product side

93 = Z + 2

Z = 91

Hence, the isotopic symbol of unknown element is $_{91}^{233}\textrm{Pa}$

8 0

3 years ago