NS is WRONG!!on CHEMISTRY QBANK 4 # 12

PoincareConjecture
Posts: 93
Joined: Wed Mar 29, 2017 3:37 pm

NS is WRONG!!on CHEMISTRY QBANK 4 # 12

Postby PoincareConjecture » Tue Jan 16, 2018 12:52 pm

This one is under the newly added passages; I was following along on the explanation, which is pretty straight forward but they simply the mass to 2x10-7kg but when they apply the mass to the formula they use 20x10-7kg---the rest of the math is fine we end up with 4s as the answer but i think the correct math would have 0.4s which is answer choice A!! but NS highlights choice D as the correct one--> Please tell me i am right:)
NS_Tutor_Andrew
Site Admin
Posts: 520
Joined: Mon May 23, 2016 1:47 pm

Re: NS is WRONG!!on CHEMISTRY QBANK 4 # 12

Postby NS_Tutor_Andrew » Tue Jan 16, 2018 1:54 pm

Hi PoincareConjecture,

You are correct -- but there's another error yet, because 20 x 10^-6 = 2 x 10^-5, not 2 x 10^-7. We'll fix this ASAP. Thanks for pointing this out!
Andrew D.
Content Manager, Next Step Test Prep.
PoincareConjecture
Posts: 93
Joined: Wed Mar 29, 2017 3:37 pm

Re: NS is WRONG!!on CHEMISTRY QBANK 4 # 12

Postby PoincareConjecture » Wed Jan 17, 2018 1:30 am

Thanks Andrew learning to be a hawk eye like you:) Arigato Gozymusu!

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