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Slav-nsk [51]
2 years ago
6

___HC2H3O2 + ___KNO2 → ___KC2H3O2 + ___HNO2

Mathematics
1 answer:
Furkat [3]2 years ago
5 0

Let a, b, c, d be coefficients for the balanced reaction:

a HC₂H₃O₂ + b KNO₂   →   c KC₂H₃O₂ + d HNO₂

Count the elements among the reactants and products:

H: 4a = 3c + d

C: 2a = 2c

O: 2a + 2b = 2c + 2d

K: b = c

N: b = d

Suppose we let b = 1. Then both c = 1 and d = 1, and in the O equation we have

2a + 2 = 2 + 2   ⇒   2a = 2   ⇒   a = 1

(Note that the equations for H and C also hold up.)

So the balanced reaction is simply

1 HC₂H₃O₂ + 1 KNO₂   →   1 KC₂H₃O₂ + 1 HNO₂

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tekilochka [14]

Answer:

The area of the triangle is 28 square units

Step-by-step explanation:

First we have to calculate the length of the base of the triangle and the length of the height

To calculate the base we have to subtract point (-1 , 2) from point (7 , 2)

(7 , 2) - (-1 , 2)  = ((7 - (-1)) , (2 - 2)) = (8 , 0)

because it has no component in y this means that the length of the base is 8

b = 8

To calculate the height we have to subtract point (-1 , 2) from point (-1 , 9)

(-1 , 9) - (-1 , 2) = (((-1) - (-1)) , (9 - 2)) = (0 , 7)

because it has no component in x this means that the length of the base is 7

h = 7

To calculate the area of ​​a triangle we have to multiply the base by the height and then divide it by 2

a = (b * h)/2

a = (8 * 7)/2

a = 56/2

a = 28

The area of the triangle is 28 square units

8 0
3 years ago
A taxi ride costs $4, plus an additional<br> $3 per mile.<br> What's the equation? (mx+b)
cestrela7 [59]

Answer:

3x+4

Step-by-step explanation:

3 dollars per mile = 3x

plus 4 dollars for taxi ride.

6 0
3 years ago
Which of the following statements are true about the
Salsk061 [2.6K]

Answer:

w and x are adjacent

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Step-by-step explanation:

3 0
2 years ago
If m^2 = 3 then what is the value of 5m^6<br><br> a. 15<br> b. 30<br> c. 45<br> d. 135
Virty [35]

Answer:

135

Step-by-step explanation:

m^2 = 3

Cube m^2

(m^2)^3 = 3^3

m^(2*3) = 27

m^6 = 27

Now multiply by 5

5 * m^6 = 5*27

5 m^6 =135

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The position of the particle as function of time is given as
f(t)=cos( \frac{\pi t}{4} )

The velocity as function of time is
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A graph of f(t) versus t and of v(t) versus t is shown below.
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