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Question:


Consider the following reaction.

aA +bB →→ cC

whose first and second half-lives are 49.8 and 49.8 minutes respectively.  If the rate constant is equal to 0.01392 and [A]0 = 16.71,  calculate the [A] at t = 67.55 minutes.  

k = ??


Answer:


Step 1

Given:

The half life of the reaction, (t1/2)=49.8 min.

The rate constant, (K) = 0.01392.

The initial concentration, [A]0 = 16.71

The given time, (t)=  67.55 minutes.

The remaining concentration, [A]= ????

 

 

Step 2

Chemistry homework question answer, step 2, image 1

ST

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A palindrome is a number or a text phrase that reads the same backwards as forwards. For example, each of the following five-digit integers is a palindrome: 12321, 55555, 45554 and 11611. Write a C++ program that reads in a five-digit integer and determines whether it is a palindrome .

Question: A palindrome is a number or a text phrase that reads the same backwards as forwards. For example, each of the following five-digit integers is a palindrome: 12321, 55555, 45554 and 11611. Write a C++ program that reads in a five-digit integer and determines whether it is a palindrome . Answer: Step 1 PROGRAMING CODE:   #include <stdio.h> int main() {   int n, a, b, c, d, e;   int digit = 0;   printf( "Enter one 5 digit number: \n" );   scanf( "%d", &n );   a = n / 10000;   b = n / 1000 % 10;   c = n / 100 % 10;   d = n / 10 % 10;   e = n % 10;   if ( a == e && b == d ) {     printf( "Palindrome!\n" );   }   if ( a != e || b != d ) {     printf( "Not a palindrome.. :(\n" );   }   return 0; } PROGRAM SCREENSHOT: Step 2

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