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Rufina [12.5K]
3 years ago
11

Consider the following unbalanced equation. N2+ O2=N2O. When the equation is completely balanced using smallest whole numbers, t

he coefficient of N2 is...
Chemistry
1 answer:
77julia77 [94]3 years ago
4 0

Answer:

2

Explanation:

Since you are balancing the equation you need to have equal amounts of each element on each side. Right now there is 2n and 2o on one side, and on the other 2n and 1o. Although the number of n's on each side is equal the number of o's are not. First I balance the number of oxygen's on each below, but doing that made the number of nitrogen's unbalanced. So then I balanced the nitrogens in step 2.

__N2+ __O2 = __N2O

1. __N2+ __O2 =  2 N20

2. 2 N2 + 1 O2 = 2 N2O

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If 16g of <img src="https://tex.z-dn.net/?f=CH_%7B4%7D" id="TexFormula1" title="CH_{4}" alt="CH_{4}" align="absmiddle" class="la
sammy [17]

43.56 grams of  are produced if 16g of  CH4 reacts with 64g of O2.

Explanation:

Balance equation for the reaction:

CH4 + 2O2⇒ CO2 +2H2O

Data given : mass of CH4 =16 grams  atomic mass = 16.04 grams/mole

                    mass of water 36 gram  atomic mass = 18 grams/moles

                   mass of CO2=?                atomic mass = 44.01 grams/mole

number of moles = \frac{mass}{atomic mass of one mole}    equation 1

number of moles in CH4

   n = \frac{16}{16.04}

       = 0.99 moles

Since combustion is done in presence of oxygen hence it is an excess reagent and methane is limiting reagent so production of CO2 depends on it.

From the equation

1 mole of CH4 gave 1 mole of CO2

O.99 moles of CH4 will give x moles of CO2

\frac{1}{1} = \frac{x}{0.99}

x = 0.99 moles of carbon dioxide

grams of CO2 = number of moles x atomic mass

                         = 0.99 x 44.01

                          = 43.56 grams of CO2 is produced.

4 0
3 years ago
What is the pH of a 9.50×10−2 M ammonia solution??
Darina [25.2K]
NH₃ + H₂O ⇄ NH₄⁺ + OH⁻

c=9,50*10⁻² mol/L

Ammonia solution is a weak electrolyte.
The dissociation constant of ammonium hydroxide is:
K=1.78*10⁻⁵

[OH⁻]=√(Kc)

pH=14-pOH=14+lg[OH]⁻
pH=14+lg(√(Kc))

pH=14+lg(√(1.78*10⁻⁵*9.50*10⁻²))=8.23
pH=8.23
4 0
3 years ago
A sample has a measured temperature of 516.1 °F. What is its temperature in °C?<br><br> °C
irga5000 [103]

Answer:

<h2><em>268.944°C</em></h2>

Explanation:

(516.1°F − 32) × 5/9 = 268.944°C

Hope this helps! :)

4 0
3 years ago
2.0 kg of solid gold (Au) at an initial temperature of 1000K is allowed to exchange heat with 1.5 kg of liquid gold at an initia
gulaghasi [49]

Answer:

liquid phase

Explanation:

see the non-graph solution (used only formulas of the thermodynamic); the final temperature of the mixture is ~1139.701 (°K). The details are in the attachment.

Note:

c_l \ is \ for \ liquid \ gold;\\ c_s \ is \ for \ solid \ gold.

8 0
3 years ago
The atmosphere is made mostly of _____. oxygen nitrogen carbon dioxide hydrogen
Shkiper50 [21]

Answer:

Nitrogen

Explanation:

It is the most abundant gas in the atmosphere.

4 0
3 years ago
Read 2 more answers
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