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anzhelika [568]
3 years ago
12

Consider the following intermediate chemical equations.

Mathematics
1 answer:
Natalija [7]3 years ago
4 0

Answer:

A. -205.7 kJ

Step-by-step explanation:

The overall enthalpy of reaction be calculated when the intermediate steps are present

formed in a multi-step process.

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gladu [14]

Answer:do it yo self

Step-by-step explanation: get yo daam calculator and do it

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Solve for x:<br> 2(5 – 3x) &lt; x - 4(3 - x)
Setler [38]

Answer: x > 2

Step-by-step explanation: PLEASE GIVE BRAINLIEST HELPS A LOT

6 0
3 years ago
Find the volume of the region bounded above by the elliptical paraboloid zequals=9 minus 4 x squared minus 5 y squared9−4x2−5y2
Virty [35]

Answer:

\int\limits^1_0 \int^1_0{z} \, dA

Step-by-step explanation:

\int\limits^1_0\int^1_0 {9-4x^2-5y^2dy} \, dx

\int\limits^1_0 {9y-4x^2y-\frac{5y^3}{3}|_0 ^1 } \, dx

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You finish the leftover.

7 0
3 years ago
Please help me ASAP with this math problem
ser-zykov [4K]

Answer:

Root( c square -9)

Step-by-step explanation:

The answer u have is the answer for a^2

8 0
2 years ago
Read 2 more answers
The sum of the digits of a 2-digit number is 10. If 18 is added to the number, the digits of the new number are those of the ori
Aliun [14]

Answer:

46

Step-by-step explanation:

Let (ab) represent a number with a in the ten's position and b is the one's position.

This means (ab) actually has value of 10a+b.

We are given the sum of those digits of (ab) is 10; this means a+b=10.

It says if 18 is added to the number (ab), then the result is (ba).

So (ab) has value 10a+b and

(ba) has value 10b+a.

We are given then:

(ab)+18=(ba)

10a+b+18=10b+a

Subtract 10a on both sides:

b+18=10b+a-10a

Simplify:

b+18=10b-9a

Subtract b on both sides:

18=10b-b-9a

18=9b-9a

Divide both sides by 9:

2=b-a

Rearrange by commutative property:

2=-a+b

So the system of equations we want to solve is:

a+b=10

-a+b=2

-------------------------Add equations together (this will eliminate the variable a and allow you to go ahead and solve for b:

0+2b=12

2b=12

Divide both sides by 2:

b=\frac{12}{2}

Simplify:

b=6

If b=6 and a+b=10, then a=4.  a=4 since 4+6=10.

So the original number is (46).

18 more than 46 is 18+46=(64) which is what we wanted.

We also have the sum of 4 and 6 is 10 as well.

7 0
3 years ago
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