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Nataliya [291]
3 years ago
9

Please check my answer! Due in a few minutes!

Chemistry
2 answers:
rewona [7]3 years ago
8 0

Answer:

Explanation:

It is A. that is the only one that really makes any sense to me.

I do hope I helped you! :)

Gwar [14]3 years ago
6 0

Answer:

write a hypothesis

Explanation:

in a lb procedure a hypothesis is most likely useful whaen doing science

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Question 3 of 10
PIT_PIT [208]

Answer:

the moluculer formula is the answer

Explanation:

4 0
3 years ago
What features of earth's crust do convergent divergent and transform boundaries form
12345 [234]
Plate tectonics are the broken plates of earth that move around and form the different plate boundaries
8 0
3 years ago
Which nitrogen-containing base is found only in rna?
bija089 [108]
The answer to this is Codon. 
3 0
3 years ago
A cleaning bottle contains 83.1 g of ammonia. How many molecules of ammonia are in the bottle?
Tasya [4]

Answer:

2.94 x 10^2^4

Explanation:

First we need to find out how many moles of ammonia there are, using the formula: Mass = mr x moles.

We know the mass is 83.1g, now we need to find the mR of ammonia - NH3.

N = 14, H = 1, so 14 + (3x1) = an mr of 17.

Moles = mass/ mr = 83.1/17 = 4.8882

Now we can multiply the moles by avogadro's constant to find the number of molecules:

4.8882 x (6.02 x 10^2^3 ) = 2.94 x 10^2^4 molecules of ammonia

4 0
3 years ago
When ethyl-2-methylpropanoate is treated with sodium ethoxide in ethanol, there is no observable reaction. Explain this observat
den301095 [7]

Answer:

No net change in reaction occurs in this nucleophilic acyl subtitution reaction

Explanation:

Sodium ethoxide in ethanol gives nucleophilic acyl substitution reaction with ethyl-2-methylpropanoate.

Here ethoxide group replaces an ethoxide group from ester through addition-ellimination pathway.

So, ultimately, the product of this reaction is identical with reactant i.e. ethyl-2-methylpropanoate is reproduced.

Hence one might observe no change during reaction as product and reactant of this reaction are same.

Mechanistic pathway has been shown below.

8 0
3 years ago
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