The fictitious element homer decays into fictitious daughter element Lisa with a half-life of 1000 years. a rock is found that contains 2 moles of homer and 6 moles of Lisa. what is the approximate age of the rock? A. 1000 years
B. 500 years
C. 2000 years
D. 4000 years

C. 2000 years

Step-by-step explanation:

Data provided in the question

Half life = 1,000 years

Number of homer moles contained = 2

And, for lisa = 6

Based on the above information, the computation is shown below:

But before that we need to do the following calculations

Total moles by combing the homer and lisa is

= 2 moles + 6 moles

= 8 moles

Now the present fraction of homer is

Therefore the approximate age of rocks is

= 2,000 years

Hence, the correct option is c.

c. 65°

step-by-step explanation:

we are given a triangle with two known angles, 62° and 53°, while the third angle x is unknown and we are to find its value.

we know that the sum of angles in a triangle is equal to a total of 180 degrees. so we can write it as:

x + 62° + 53° = 180°

solving to find the value of x:

x = 180 - (62 + 53) = 65°

therefore, the value of x in this triangle is 65°.

$6.42

step-by-step explanation: