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Aliun [14]
3 years ago
11

How many moles of water are produced from 13.35 mol of oxygen?

Chemistry
1 answer:
solong [7]3 years ago
7 0
In the balanced reaction shown, there are twice as many moles of water as oxygen. If 13.35 moles of oxygen are reacted, 26.70 moles of water is formed
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If I have 17 liters of gas at 67C and 88.89 atm, what will be the pressure of the gas if I raise the temperature to 94C and decr
dmitriy555 [2]

Answer:

The correct answer is A. 140 atm

Explanation:

We use the gas formula, which results from the combination of the Boyle, Charles and Gay-Lussac laws. According to which at a constant mass, temperature, pressure and volume vary, keeping constant PV / T. We convert the unit Celsius into Kelvin:

0 ° C = 273K, 67 ° C = 273 + 67 = 340K; 94 ° C = 273 + 94 = 367K

P1xV1 /T1= P2x V2/T2

P2= ((P1xV1 /T1)xT2)/V2

P2=((88,89atm x 17L/340K)x367K)/12L= <em>135,927625 atm</em>

7 0
3 years ago
2a. Density is the relationship between mass and volume. Density has
Charra [1.4K]

The volume of copper : 3.24 ml

<h3>Further explanation </h3>

Density is a quantity derived from the mass and volume

Density is the ratio of mass per unit volume

With the same mass, the volume of objects that have a high density will be smaller than objects with a smaller type of mass

The unit of density can be expressed in g/cm³ or kg/m³

Density formula:

\large{\boxed {\bold {\rho~=~ \frac {m} {V}}}}

ρ = density , g/cm³ or kg/m³

m = mass , g or kg

v = volume , cm³  or m³

A common example is the water density of 1 gr / cm³

The density of copper : 8.96 gr/ml

mass of copper : 29 g

then the volume :

\tt V=\dfrac{m}{\rho}\\\\V=\dfrac{29~g}{8.96~g/ml}\\\\V=\boxed{\bold{3.24~ml~or~3.24~cm^3}}

8 0
3 years ago
Use the graph to answer the following questions. Which state has the highest level of air pollution particles for the year 2014?
Vikki [24]

Answer: Maryland, Wyoming, reduced burning of fossil fuels

Explanation: I took the test and got it right.

6 0
3 years ago
Read 2 more answers
A sample of juice has a pH of 4.2. Whsat is the concentration in mol/dm3 of OH in the juice?<br>​
Annette [7]

Answer:

6 * 10^-4M

Explanation:

use this equation

[ H + ]  =  10  −  pH

6 0
3 years ago
How many moles of aluminum are needed to react completely with 1.2 mol of feo
Lelu [443]

Answer:

  • <u><em>0.80 mol Al</em></u>

Explanation:

<u>1) Word reaction:</u>

  • Aluminum + ferrous oxide → aluminum oxide + iron

This is a single replacement reaction, in which aluminum, a more acitve metal than iron, replaces the iron in the ferrous oxide to form aluminum oxide and iron.

<u>2) Skeleton chemical equation:</u>

  • Al + FeO → Al₂O₃ + Fe

<u>3) Balanced chemical equation:</u>

Add the coeffcients to comply with the law of conservation of mass:

  • 2Al + 3FeO → Al₂O₃ + 3Fe

<u>4) Mole ratio of Al and FeO:</u>

  • 2 mol Al : 3 mol FeO

<u>5) Set a proportion with the unkown and solve:</u>

  • x / 1.2 mol FeO = 2 mol Al / 3 mol FeO

  • x = 1.2 mol FeO × 2 mol Al / 3 mol FeO =<u> </u><u>0.80 mol Al ← answer</u>
3 0
3 years ago
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