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krek1111 [17]
3 years ago
9

Jackson lives near the equator. Nighttime for Jackson is

Chemistry
1 answer:
Liula [17]3 years ago
3 0

Answer:HELP

Explanation:

I need help on this answer

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2 NH3 + 3 CuO --> 3 Cu + N2 + 3 H2O
Gnom [1K]

<u>Answer:</u> 0.5 moles of N_2 are produced in the reaction

<u>Explanation:</u>

The number of moles is defined as the ratio of the mass of a substance to its molar mass.

The equation used is:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}} ......(1)

Given mass of CuO = 113.6 g

Molar mass of CuO = 79.5 g/mol

Plugging values in equation 1:

\text{Moles of CuO}=\frac{113.6g}{79.5g/mol}=1.43 mol

For the given chemical reaction:

2NH_3+3CuO\rightarrow 3Cu+N_2+3H_2O

By the stoichiometry of the reaction:

If 3 moles of CuO produces 1 mole of N_2

So, 1.43 moles of CuO will produce = \frac{1}{3}\times 1.43=0.476=0.5mol of N_2

Hence, 0.5 moles of N_2 are produced in the reaction

5 0
3 years ago
Select the correct answer. Thomas has 235 grams of K2S in the chemistry lab. How many atoms of potassium (K) are in 235 grams of
Readme [11.4K]

Atoms are the smallest division of the element. The potassium atoms present in the 235 gm of the compound is 2.57 \times 10^{24} atoms.

<h3>What is the number of atoms?</h3>

Given,

  • Mass (m) of Potassium sulfide (\rm K_{2}S) = 235 gm
  • Molar mass (M) of  Potassium sulfide = 110.26 g/mol

Calculate the number of moles as:

\begin{aligned}\rm Moles (n) &= \dfrac{\rm mass}{\rm molar\;\rm mass}\\\\&= \dfrac{235}{110.26}\\\\&=2.13\;\rm mol\end{aligned}

In the given compound \rm K_{2}S, there are two atoms of potassium and one atom of sulphur.

If, 1 mole = 2 \times 6.022 \times 10^{23} atoms of potassium

Then, 2.13 moles = X atoms

Solving for X:

2.13 \times 2 \times 6.022 \times 10^{23} = 2.57 \times 10^{24}

Therefore, option c. 2.57 \times 10^{24} is correct.

Learn more about atoms here:

brainly.com/question/11411852

6 0
3 years ago
In the conclusion to the snake mole lab, you have to convert 3.45 moles of (NH4)2S04 to
Serhud [2]
Molar mass = 132.14g/mol
3 0
3 years ago
The part of the flower responsible for producing pollen (sperm) is the _______.
IgorC [24]
Hello,

Here is your answer:

The proper answer to this question is option C "stigma".

Here is how:

The stigma is responsible for producing pollen in a plant.

Your answer is C.

If you need anymore help feel free to ask me!

Hope this helps!
7 0
3 years ago
Which method most effectively measures the volume of an irregularly shaped object?
BigorU [14]

Answer:

It seems maybe A is correct answer

3 0
3 years ago
Read 2 more answers
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