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zhannawk [14.2K]
3 years ago
13

The perspective formula of threonine, an amino acid with two asymmetric centers, is provided below. perspective formula of threo

nine add either an h, oh, or nh2 group to complete the fischer projection for threonine.
Chemistry
1 answer:
Citrus2011 [14]3 years ago
8 0
<span>The threonine add either an h, oh.The provide below standpoint formula of threonine add either an h, oh, or nh2 group to whole the fischer projection for threonine. the threonine aldolase structure there address of the reversible cleavage of several L-3-hydroxy-a-amino acids. like as L-TAs +H3NH. HOH. CH3. L-Threonine (2S, 3R).</span>
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Cho recorded the weather in her town for a week. She wrote down her observations in the table below. Mon Tue Wed Thu Fri Sat Sun
SIZIF [17.4K]

Answer:

If this trend continues, the following week will be cooler, and a large amount of rain will fall.

Explanation:

Patterns and trends can often be found in data sets. During the week that Cho recorded the weather, the temperatures consistently dropped by one to four degrees each day. At the end of the week, the amount of precipitation increased daily.

6 0
3 years ago
What is released when a election returns to a lower state of energy
elena-14-01-66 [18.8K]
Well basically, light is released when an excited electron returns to a lower energy state. Visible Light is part of the electromagnetic spectrum, and is a kind of radiation emitted.
3 0
3 years ago
A piece of metal with a mass of 142 g is placed in a 50 mL graduated cylinder. The water level rises from 20 mL to 40 mL. What i
zheka24 [161]

Explanation:

The end goal of this question is to find density. Density can be found using the following formula:

D=m/v

D=Density

m=mass

v=volume

Therefore we need mass and volume to find density. Mass is already given in the question as 142g. All we have left is volume. When a solid is placed in water in a graduated cylinder the volume goes up. This means if you subtract the volume after the metal was placed from before it was placed, you can find the volume of the metal. Therefore the volume of the metal is 40mL-20mL=20mL. However typically, volume is found in liters so the volume should be .04L-.02L=0.02L. Now that we have volume and mass we can find density using the formula d=m/v. So 142/.02=7,100 grams per liget or 7.1 kilograms per liter. This answer seems unrealistic so I would double check with your teacher about the question.

Hope I helped, 2Trash4U

5 0
3 years ago
Green plants use light from the Sun to drive photosynthesis. Photosynthesis is a chemical reaction in which water (H2O) and carb
ICE Princess25 [194]

Answer : The mass of oxygen gas produced will be 4.45 grams

Explanation : Given,

Mass of water = 5.2 g

Molar mass of water = 18 g/mole

Molar mass of O_2 = 32 g/mole

The balanced chemical reaction will be,

6CO_2+6H_2O\overset{sunlight}\rightarrow C_6H_{12}O_6+6O_2

First we have to calculate the moles of water.

\text{Moles of }H_2O=\frac{\text{Mass of }H_2O}{\text{Molar mass of }H_2O}

\text{Moles of }H_2O=\frac{2.5g}{18g/mole}=0.139mole

Now we have to calculate the moles of oxygen.

From the balanced chemical reaction, we conclude that

As, 6 moles of water react to give 6 moles of oxygen gas

So, 0.139 moles of water react to give 0.139 moles of oxygen gas

Now we have to calculate the mass of oxygen gas.

\text{Mass of }O_2=\text{Moles of }O_2\times \text{Molar mass of }O_2

\text{Mass of }O_2=0.139mole\times 32g/mole=4.45g

Therefore, the mass of oxygen gas produced will be 4.45 grams

7 0
3 years ago
Which factor is most important to consider when evaluating a journal article about global warming?
Studentka2010 [4]
Since you didn't include the options, I will answer the question as well as I can: the one factor I would be considering is whether the journal is known to be biased, for example whether it's a peer-reviewed journal ( those are less biased) or whether they journal is paid by some interest group.

Otherwise I would look at whether the data is reliable, for example whether  the author cites the sources for their data
8 0
3 years ago
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