Questions by Peter Du

Questions by Peter Du

Two isotopes of Copper occur naturally: Isotopes of Copper: Percent Abundance: Atomic Mass: Copper - 63 69.17 % 62.9396 amu Copper - 65 30.83 % 64.9278 amu Calculate the average atomic mass for the two

asked Aug 3, 2020

1 answer

2 votes

58.4k views

A collector has 120 movie posters and 100 band posters she wants to sell 24 movie posters but still have her poster collection maintain the same ratio of 120 to 100 if she sells 24 movie posters how many

asked Jul 13, 2020

1 answer

0 votes

121k views

Mary needs to choose the _____ menu in order to place the text in a desirable fashion around the image

asked Mar 3, 2020

2 answers

2 votes

194k views

Which is the BEST example of personification? A) The snow was piled up as high as the front door. B) The wind kicked up all the leaves we raked this morning. C) We were as thirsty as camels when we came

asked Jun 2, 2019

1 answer

2 votes

13.9k views

A drink dispenser fills cups at a rate of 2 ounces per second. Adrain has 64 ounce cup that already contains 18 ounces of water. How long will it take the dispenser to fill the rest of his cup with water

asked Jan 7, 2019

2 answers

3 votes

72.1k views

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