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Llana [10]
3 years ago
12

Elena works for a television network she is currently working with the crew of a series called Days in Chicago, She is in charge

of maintaining the
book that has basic information on the characters, setungs, and other elements, and which must be updated as the series progresses, What is
this book called?​
Chemistry
1 answer:
Alik [6]3 years ago
5 0

Answer:

Explanation:

What

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How many moles are in 1.2×10^3 grams of ammonia
yuradex [85]
Ammonia is NH3. The molar mass of NH3 is 17.0307g.

(1.2*10^3)/17.0307=70.46 moles of NH3.

If you are using significant figures, it is 70. moles of NH3.
6 0
3 years ago
a doctor's order is 0.125 g of ampicillin. the liquid suspension on hand contains 250 mg/5.0 ml. how many milliliters of the sus
disa [49]
0.125 g=(0.125 g)(1000 mg/1g)=125 mg.

Then, we need 125 mg of ampicillin.
5 ml of  liquid suspension contains 250 mg of ampicilling , therefore:

5 ml----------------250 mg of ampicilling
x--------------------125 mg of ampicilling

x=(5 ml * 125 mg of ampicilling) / 250 mg of ampicilling=2.5 ml

Answer: we require 2.5 ml
5 0
4 years ago
Read 2 more answers
Write the structure of a D-aldohexose that gives a meso compound on treatment with NaBH4 in water.
soldier1979 [14.2K]

Explanation:

Meso compounds are optically inactive stereoisomers. Despite of having chiral carbon, they do not show  optical activity because it has a plane of symmetry in its structure itself. It is superposable on its mirror image.

Aldo sugars on reaction which reducing agents such as , NaBH₄ reduces the carbonyl group in the sugar to alcohol and gives corresponding alditol.

<u>The D- aldohexose which on reduction gives a meso alditol are allose and galactose. </u>

<u>The structure is shown in the image below. Thus, in allitol and galactitol formed have internal plane of symmetry which makes the optically inactive.</u>

7 0
3 years ago
What happens to the reactivity of nonmetals within a group from top of the group to the bottom?​
andreev551 [17]

As you go down a group, the atoms get bigger. The bigger the atom, the more unstable it is. The more unstable it is, the more reactive the atom will be. So, as you go down a group, the nonmetals will become more reactive.

6 0
4 years ago
Use the periodic table to correctly describe the arrangement of electrons in an oxygen atom. Check all of the
Anna [14]

Answer:

second option and last option

Explanation:

Know how to do an electron configuration. This is correct because it adds up to 8 and is in the correct order.

All valence electrons are in the last shell. In this case, 2p is the last shell.

6 0
3 years ago
Read 2 more answers
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