All categories

3 years ago

I need help with this question

Chemistry

2 answers:

IrinaK [193]3 years ago

8 0

Answer:

there is no question posted

malfutka [58]3 years ago

5 0

What question do you need help with

You might be interested in

Mendeleev's periodic table of elements was created in 1901.<br> O A. True<br> O B. False

LiRa [457]

B. False
It was created in 1869

3 0

3 years ago

"Synthesis gas" is a mixture of carbon monoxide and water vapor. At high temperature synthesis gas will form carbon dioxide and

Pavlova-9 [17]

Answer:

Check the explanation

Explanation:

Lets start by drawing the ICE chart

reaction is

...............CO + H2O ========= CO2 + H2

I.............2.6.........3.4..........................0................0

E...........1.88........2.68......................0.72............0.72

since reaction is 1 : 1 if 0.72 atm of H2 are produced then the same amount of CO2 will be formed

calculate Kp this is the relationship between the pressure of products and the pressure of reactants

Kp = Pproducts / Preactants = [Pco2* PH2] / [PCO * PH2O]

Kp = 0.72 * 0.72 / (1.88 * 2.68) = 0.1029

Write the ICE chart again

...............CO + H2O ========= CO2 + H2

I.............1.88.........2.68+1.1.................0.72................0.72

C...........-x............. -x..............................+x........................+x

E......1.88 - x...........3.78-x.....................0.72+x..... ..0.72+x

Kp is = (0.72+x)*(0.72+x) /[ (1.88-x)*(3.78-x) ] = 0.1029

lets say that x is the change of pressure.

If you solve this equation you will get a value of x equal to 0.1

Pressure of CO2 is

0.72 + 0.1= 0.82 atm

using 2 sig figures this would be

8.2x10-1 atm

6 0

3 years ago

Read 2 more answers

Determine the number of significant figures.

Genrish500 [490]

Answer: A. 4sf B.2sf C.6sf D.1sf E.4sf

Hope this helps! :)

3 0

3 years ago

Imagine that a new planet is discovered with two moons of equal mass: Moon A and Moon B. The mass of the new planet is greater t

kobusy [5.1K]

Answer: The gravitational pull on Moon B is greater than on Moon A because Moon B is closer to the new planet than Moon A.

Explanation:

The gravitational force exerted by the two objects on each other is inversely proportional to the square of the distance between the objects.

$F=G\frac{mM}{r^2}$

F = gravitational force or pull

G = gravitational constant on that planet

M = mass of the object-1

m = mass of object-2(Mass of Moon-A or Moon-B)

r = distance between two objects

$Force\propto \frac{1}{r^2}$

With decease in distance 'r' the force between the object increases or vice versa.So, from this we can say that the gravitational pull on Moon-B is more than the gravitational pull on Moon-A because the Moon B is closer than the Moon-A from the new planet.

3 0

3 years ago

What is the Kelvin temperature for 30°C? 130 K 30 K 273 K 293 K 303 K

pishuonlain [190]

The answer is 303 K, to find K you have to add 273 to the °C

8 0

3 years ago