Arturo O. answered • 10/26/19
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Try adding six times the mass of a proton, six times the mass of a neutron, and six times the mass of an electron. By the way, a neutron has greater mass than a proton, so there must be an error in the figures provided in the question.
Arturo O.
Here is an example of adding when the powers are different: Add 2 x 10^20 to 3 x 10^24. What you need to do is change one number or the other so they are both to the same power. Let us change 2 x 10^20 to power 10^24. You move the decimal point after the 2 by 4 places to the left and then you multiply that by 10^24. 2 x 10^20 = 0.0002 x 10^24 Now you can add this to 3 x 10^24 and get 3.0002 x 10^24. You could also convert 3 x 10^24 to power 10^20 by moving the decimal after the 3 by 4 places to the right, and then multiply by 10^20. 3 x 10^24 = 30000 x 10^20 Now add this to 2 x 10^20 and get 30002 x 10^20. Note that 30002 x 10^20 = 3.0002 x 10^24. Try this with the numbers you have.
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10/27/19
Chloe W.
Thank you for your response, I appreciate this. What about the powers of? There are two that are -24 and one at -28? This is the part I’m struggling at. It’s only a Maths test, not science, so maybe that’s why the figures aren’t accurate, but yes, it would have been good if the teacher picked figures that were accurate.10/27/19