Sam's Earth Science class is about to walk the planets. What does that mean? Well, his teacher has tied a large helium balloon outside and students will pace off the distance to each planet, using this scale as a guide. Sam's teacher has told the class to use the idea of a "pace" as a unit of measure for the activity. A pace is two steps-one with each foot. One pace is about 1 meter. The students predicted how many paces it would take to reach each planet. It takes 6 paces to reach Mercury. How many paces from the Sun is Venus? es A) 8 paces B) 11 paces 15 paces D) 18 paces Universe - 1​

i think the answer is terrae but not 100 percent sure. ▓▬▬ §

what is the question here. i think you messed up.

може ли да зареждате повече информация, моля

percent abundance for cu-63 can be shown as:

63 x + 65 (1-x) = 62.9296

65 - 62.9296 = 2 x

x = 1.035

thus, percent abundance for cu-63 is 1.035

percent abundance for cu-65 can be shown as:

63 x + 65 (1-x) = 64.9278

65 - 64.9278 = 2 x

x = 0.0361

thus, percent abundance for cu-63 is 0.0361

the mass spectrum of cu-63 showing the intense peak as, this isotope is found in nature more abundantly around 92.38 % in comparison to cu-65 which is found 62.58 % naturally