Answer:
45 g de oxido de hierro (III) liberarán 18.9 L de CO₂
Step-by-step explanation:
La reaccion quimica es la siguiente:
Fe₂O₃ (s) + 3CO (g) → 2Fe (s) + 3CO₂ (g)
1 mol de oxido de hierro (III), reacciona con 3 moles de monoxido de carbono para liberar 3 moles de CO₂ y 2 moles de Fe sólido.
Pasamos la masa de F₂O₃ a moles:
159.6 g . 1 mol /159.7g = 1 mol de oxido
Entonces, aplicamos la regla de tres:
1 mol de oxido produce 3 moles de dioxido de carbono, indudablemente eso será lo que formemos de producto, por lo tanto 3 moles de CO₂ estan ocupando 67.2 litros.
Ahora calculamos los nuevos moles:
45g . 1 mol /159.7 g = 0.282 moles
Aplicamos la regla de tres:
Si un mol de oxido produce 3 moles de CO₂
0.282 moles producen (0.82 . 3 ) = 0.845 moles de CO₂
Como tenemos menos moles de gas, el volumen ocupado sera mayor, hacemos la regla de tres:
Si 3 moles de CO₂ ocupan 67.2 litros
0.845 moles ocuparan (0.845 . 67.2/ 3 ) = 18.9 litros
What is the solution to this equation?
X-7 = 18
O A. x= 11
O B. X= 35
O c. x = 25
O D. x = 9
Answer:
The answer is c or x=25
Step-by-step explanation:
The diagram shows a convex polygon, what is the value of t?
what is the degree of the following polynomial 2x^3
Answer:
3
Step-by-step explanation:
Whatever the highest exponent is determines the degree.
Can someone tell yo yo sis how do I
If (a+b)(a-b)=21,a+b=7 and a-b=3 what Is the value of a
9514 1404 393
Answer:
5
Step-by-step explanation:
Add the latter two equations and you get ...
(a +b) +(a -b) = (7) +(3)
2a = 10 . . . . . . . . . . . . . . . simplify
a = 5 . . . . . . . divide by 2
A rectangle has a length of 3.5 inches and a width of 2.5 the perimeter is 6 inches what is the area of a rectangle rounded to the nearest tenth?
Answer:
8.8
Step-by-step explanation:
A=lw
A= (3.5)(2.5)
A= 8.75 ≅ 8.8
plz mark me brainliest. :)
PLEASE HELP ME OUT WITH ALGEBRA! I KNOW THERE ARE SMART PEOPLE OUT THERE!!
please help me!!! PLEASE!!!!!!!
The system of equations (picture shown) has (blank)
blank options (shown in pictiure)
1. no solution
2. infinitely many solutions
3. one solution
Answer:
no way
Step-by-step explanation:
addison rae? is that u?
How tall is the tree?
hm
0.45 m
0.3 m
2.2 m
?
Order the numbers from least to greatest.
0.70, 0.701, 0.71, 0.078
Answer:
0.078,0.70,0.701,0.71
Answer:
0.70 0.71 0.701 0.078
Step-by-step explanation:
this is a kids question haha but here
What is 28% of 80???????????????????????????????????????/
Answer:
22.4
Step-by-step explanation:
m8 just use a calculator...
Answer: 22.4
Step-by-step explanation:
28 x 80 = 22.4
100
look at points c and d on the graph: what is the distance (in units) between points c and d? round your answer to the nearest hundredth
Answer:
5.85
Step-by-step explanation:
Use the pyramtherm theorem method and I got this answer.
Please help will give Brain!!
Answer:
50⁰
Step-by-step explanation:
because its still the same angle
Answer:
x=50
Step-by-step explanation:
PLZ HELP I GIVE U BRAINLIEST
Answer:
Step-by-step explanation:
231/32
7 7/32
Answer:
7 7/32
Step-by-step explanation:
I really don't get what this means
-0.1 = -10c
Answer:
C is variable. -10 times c is equal to -0.1
Step-by-step explanation:
The ratio of red marbles to blue marbles in a bag is 2 to 3. Which of the following could be
the number of red and blue marbles in the bag?
O 4 red marbles and 6 blue marbles
O 4 red marbles and 5 blue marbles
O 6 red marbles and 8 blue marbles
Answer:
4 red marbles and 6 blue marbles is the correct answwer
Step-by-step explanation:
Answer:
A.) 4 red marbles and 6 blue marbles
Step-by-step explanation:
If you times 2 x 2 then you will get 4
If you times 3 x 2 then you will get 6
And since the ratio is red : blue
2 : 3 is equivalent to 4 : 6
Just like [tex]\frac{2}{3} = \frac{4}{6}[/tex] they are the same thing.
if you were to do a fraction graph, 2 of the 3 [tex]\frac{1}{3}[/tex] bars would be the same length of 4 [tex]\frac{1}{6}[/tex] bars:
THIS TABLE LINEAR OR NON-LINEAR?
Answer:
yes
Step-by-step explanation:
Answer- I'm pretty sure it's linear
Step-by-step explanation:
If c represents the cost, in dollars, and s is the number of shirts, which equation correctly identifies the relationship between the cost and the number of shirts?
Answer:
Well, you can't make an offical equation here because it doesn't say how many shirts your offically getting.
However, if you wanted to make an correct equation you want to times the amount of shirts your getting by the cost of a shirt, to get the final cost.
Step-by-step explanation:
What is 0.2(5x – 0.3) – 0.5(–1.1x + 4.2) simplified?
0.2 [5x + (–0.3)] + (–0.5)(–1.1x + 4.2)
Answer:
1.55x-2.16
Step-by-step explanation:
If the national average for a gallon of gas is $3.10, how much should you expect to pay for gas in philadelphia versus atlanta
Answer: $3.63 / $3.29
Step-by-step explanation:
In Philadelphia, you would pay:
= 3.10 * Percentage of national average for transport
= 3.10 * 117%
= $3.63
In Atlanta:
= 3.10 * Percentage of national average for transport
= 3.10 * 106%
= $3.29
The table below compares the cost of living in Philadelphia and Cleveland, with the numbers representing percentages of the national average.
Answer:
$3.63 / $3.29
Step-by-step explanation:
Just did test
!!HELP ME PRETTY PLEASE!!Examine the four different companies in the table, which shows their yearly income and their tax rate. Which type of taxation does this table best represent?
Answer:
regressive tax
Step-by-step explanation:
Tax is a compulsory sum levied by the government or an agency of the government.
There are 3 types of taxes
1. proportional tax - the same amount of tax rate is levied on everyone.
2. regressive tax - lower earning inviduals are taxed
Answer: its proportional
Step-by-step explanation:
i got it right
Solve the inequality 13 > 3x + 1
I hope it helps you ❤️❤️❤️
NEED ASAP!!
Describe what probability is and how it is used in the real world. Explain how to calculate probability of an event. Explain the difference in something being unlikely, likely, certain, and equally likely to happen. Write 3-5 Sentences
Answer:
Probability is the mathematical term for the likelihood that something will occur, such as drawing an ace from a deck of cards or picking a green piece of candy from a bag of assorted colors. You use probability in daily life to make decisions when you don't know for sure what the outcome will be.
Step-by-step explanation:
Simplify the following expression. 3(2x + 7)
Answer:
6x+21
Step-by-step explanation:
3(2x+7)
3 multiply both 2x and 7
6x+21
hope it's helpful ❤❤❤❤❤
THANK YOU.
Help and get brainliest!
Answer:
I think it's either A or D
Step-by-step explanation:
karl scored 14 out of 20 in a test work out his score as a percentage
Answer:
70%
Step-by-step explanation:
Solving For x.
[tex]2x + 5 = 1[/tex]
Step By Step Explanation, Please.
solve the image below please
Answer:
C
Step-by-step explanation:
The area of the smaller rectangle is x².
The larger rectangle is 4 times that area: (2x)(2x) = 4x²
So in total you have 4x² + x² = 5x²
Answer C is also 5x² by calculating 6x²-x²
3(2c + 5) = 39
What is the answer ?
Answer:
c=1
Step-by-step explanation:
Simplifying
3 + 2c = 5
Solving
3 + 2c = 5
Solving for variable 'c'.
Move all terms containing c to the left, all other terms to the right.
Add '-3' to each side of the equation.
3 + -3 + 2c = 5 + -3
Combine like terms: 3 + -3 = 0
0 + 2c = 5 + -3
2c = 5 + -3
Combine like terms: 5 + -3 = 2
2c = 2
Divide each side by '2'.
c = 1
Simplifying
c = 1
Answer:
= 4
Step-by-step explanation:
Subtract 15 from both sides of the equation
6+15=39
6+15−15=39 − 5
Simplify
6=24
Divide both sides of the equation by the same term
(6=24)/6
Simplify
=4
five years ago, Alicia was twice as old as her brother Alex. if Alicia is 13 years old, how old is Alex ?
Answer:
8
Step-by-step explanation: