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Mice21 [21]
4 years ago
5

Given the balanced reaction CH4 + 2O2 -> CO2 + 2H2O2 How many moles of oxygen are needed to completely react with 3.4 moles o

f CH4? 
CHEMISTRY! sorry i clicked math
Mathematics
2 answers:
Natalija [7]4 years ago
5 0
6.8 is your answer, 1 mole of CH4 reacts with 2 moles of O2

madam [21]4 years ago
3 0

Answer: 6.8 moles of oxygen are needed to completely react with 3.4 moles of CH_4

Explanation:

CH_4+2O_2\rightarrow CO_2+2H_2O

According to reaction, 1 mole of CH_4 is reacting with 2 moles of O_2 then, 3.4 moles of CH_4 will react with :

=\frac{2}{1}\times 3.4 \text{moles of }O_2 = 6.8 moles of O_2

Hence, 6.8 moles of oxygen are needed to completely react with 3.4 moles of CH_4.

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IRISSAK [1]

Answer:

y = 2 ( x − 1 ) ^ 2 + 2

Step-by-step explanation:

y = a ( x − h ) ^ 2 + k

where vertex is (h,k) = (1,2)

h=1, k=2

y = a ( x − 1 ) ^ 2 + 2

sub ( 3,10)

10 = a (3 - 1)^2 + 2

a=2

y = 2 ( x − 1 ) ^ 2 + 2

7 0
3 years ago
Q(x)=x^3+ax^2+2b is divided by (x-3) and has a remainder of 4. Find the values of "a" and "b"​
Sati [7]

Answer:

Let p(x) = x3 + ax2 + bx +6

(x-2) is a factor of the polynomial x3 + ax2 + b x +6

p(2) = 0                                                                                      

p(2) = 23 + a.22 + b.2 +6 =8+4a+2b+6 =14+ 4a+ 2b = 0

7 +2 a +b = 0

b = - 7 -2a -(i)                                                                              

x3 + ax2 + bx +6 when divided by (x-3) leaves remainder 3.

p(3) = 3                                                                                      

p(3) = 33 + a.32 + b.3 +6= 27+9a +3b +6 =33+9a+3b = 3

11+3a +b =1 => 3a+b =-10 => b= -10-3a -(ii)                                    

Equating the value of b from (ii) and (i) , we have

(- 7 -2a) = (-10 - 3a)

a = -3                                                                                          

Substituting a = -3 in (i), we get

b = - 7 -2(-3) = -7 + 6 = -1

Thus the values of a and b are -3 and -1 respectively.

Step-by-step explanation:

4 0
3 years ago
How do you solve the fraction 2 1/2 - 6
Slav-nsk [51]
You could easily change the 2 1/2 to a 2.5 and do 2.5-6=-3.5
8 0
3 years ago
A cosine function is graphed below. Use the drop-down menus to describe the graph. The amplitude of the graph is __ . The equati
Tresset [83]

Amplitude:4

Equation of Midline: 2

Period of function:3

Function shifted left:0.5

Function shifted up: 2

4 0
3 years ago
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Galina-37 [17]

Answer and Step-by-step explanation:

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Millennials have often led older Americans in their adoption and use of technology. More than 93% millennial (who turns ages 23 to 38 this year) have their smartphones. Similarly, the vast majority of millennials use social media, compared with smaller shares among old generations.

3 0
3 years ago
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