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lisabon 2012 [21]
3 years ago
12

Traits that organisms acquire, or learn, during their lifetime will be passed on to their offspring. True False

Chemistry
1 answer:
Viktor [21]3 years ago
4 0
False. Because something you acquire is not something you inherent. hope this helps


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If you want to lift a 30-kg box to a height of 1 m, how much work will it take?
natta225 [31]

Explanation:

workdone = force x distance

force = mass x acceleration

30 x 10 = 300N

300N x 1m

workdone= 300J

7 0
3 years ago
How many moles of ammonia are produced when 5.0 moles of hydrogen react with excess nitrogen? Use this balanced equation for the
wel
3 mol H₂ → 2 mol NH₃

5 mol H₂ → x mol NH₃

x=2*5.0/3=3.3

n(NH₃)=3.3 mol
7 0
3 years ago
2.Which of the alcohols listed below would you expect to react most rapidly with PBr3?A)CH3CH2CH2CH2CH2CH2OHB)(CH3CH2)2CH(OH)CH2
Gnoma [55]

Answer:

A) CH3CH2CH2CH2CH2CH2OH

Explanation:

For this question, we have the following answer options:

A) CH3CH2CH2CH2CH2CH2OH

B) (CH3CH2)2CH(OH)CH2CH3

C) (CH3CH2)2CHOHCH3

D) (CH3CH2)3COH

E) (CH3CH2)2C(CH3)OH

We have to remember the<u> reaction mechanism</u> of the substitution reaction with PBr_3. <em>The idea is to generate a better leaving group in order to add a "Br" atom.</em>

The PBr_3 attacks the "OH" generation new a bond to P (O-P bonds are very strong), due to this new bond we will have a better leaving group that can remove the oxygen an allow the attack of the Br atom to generating a new C-Br bond. This is made by an <u>Sn2 reaction</u>. Therefore we will have a faster reaction with <u>primary substrates</u>. In this case, the only primary substrate is molecule A. So, <em>"CH3CH2CH2CH2CH2CH2OH"</em> will react faster.

See figure 1

I hope it helps!

7 0
3 years ago
A container of gas is heated from 250 k to 303k. What is the new pressure if the initial pressure is 880kpa? (Assume constant vo
Anna [14]
So this is p1 over t1 = p2 over t2. So you do 880/250=x/303 and then cross multiply and divide
8 0
3 years ago
the _________ contains the majority of the mass of the atom but is much ________ than the atom. A) nucleus, smaller B) neutrons,
sergeinik [125]
A) nucles
Then B) smaller
6 0
3 years ago
Read 2 more answers
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