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Thank you so so much! I 100% undersatnd it

thank you sir it really helped!!

Thanks sir 👍

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Bull crap... You still have a gas car and a gas stove. Hypocrite

The best many of these proxies can do is give scientists an educated guess about past climate conditions which if they do all the work on weeding out bad data can be reasonably accurate and useful. It is however very easy to make significant mistakes by including data which is actually bad. What can cause the collection of bad data is unaccounted for changes in the location where the samples are collected. An example is how a river can change its course many times over the centuries, a tree could sprout up by a river and have plenty of water while there’s a minor drought. The river could then move away from the tree. Core samples from that tree might mislead researchers into thinking that there was no drought.

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Ah, nostalgic, this is the first time im watching this

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First😅

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Bell!

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Bell rules!

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My chemistry teacher showed this to us during my junior year in high school in 2014

P R O M O S M 🙄

this is really helpful. Thank you, Mr. Bell!

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Great video - thanks:)

I wonder what kind of stability blackholes and neutron stars may offer atomic nucleuses

cool

I always laugh when people say the four corners of the Earth. Its been long established that the Earth is neither flat or quadrilateral, but a sphere with a bit of a waistline. Nice documentary enjoyed it thanks.

I like these older ones Thanks

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Why cant there be more than 18 groups?

thank you

You are the best, thank you so much for posting these videos they really are informative and give me clarity and helped my study.

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thank you Bell

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6:13 - error: there's a fault with the Keq equation where it's not balanced correctly, I though it should've been 2 H2. (g) + O2 (g) <-> 2 H2O(g).

this helped me with my test, very helpful, thank you!

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Pls upload mcq discussion based pn this topic😊

good lecture with good explanations thank you very much

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Seaborg sounds a bit like cyborg...

Outdated but interesting video. On comment. The.heavy.elements are neutron poor. As we go up in the periodic table the neutron to proton ratio goes up. These smash on atoms have similar neutron/proton ratios. That makes the atoms neutron poor. Plutonium238 has a half life of about 80years. It's perpetually hot. Uranium232 has.a half life of only 32 years. Add 3 neurons and you get U235 with a half-life of about 8x10^8 years. Add three more neutrons and you have U238 with a half life of 4x10^9 years. 😅

How is it propylamine @2:45? Shouldn't that be ethyl?

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