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mamaluj [8]
3 years ago
12

What elements make up amino acids? Look up the structures of the 20 amino acids in your textbook and list the 5 elements present

.
Chemistry
1 answer:
borishaifa [10]3 years ago
6 0

Answer:

- carbon (C)

- hydrogen (H)

- oxygen (O)

- nitrogen (N)

- sulfur (S)

Explanation:

Amino acids are organic molecules which base chemical structure is composed by:

- a carbon atom (C)

- a carboxyl group (-COOH)

- an amino group (-NH₂)

- a side chain- called R group- which varies in different amino acids. It can be composed by N, H, O, C and sometimes S.

According to this, the five chemical elements that are present in amino acids are:

- carbon (C)

- hydrogen (H)

- oxygen (O)

- nitrogen (N)

- sulfur (S)

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A block of wood has a mass of 6.0g and a volume of 12.0 cm3.what is the density of the block of wood
Ratling [72]
D=m/v; so d=6/12, which is .5
3 0
3 years ago
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A sample of gas occupies a volume of 50.0 milliliters in a cylinder with a movable piston. The pressure of the sample is 0.90 at
solong [7]

Answer:

The volume of sample at STP is = 41.22 ml

Explanation:

Given data

P_{1} = 0.9 atm

V_{1} = 50 ml

T_{1} = 298 K

At STP

P_{2} = 1 atm

T_{2} = 273 K

From ideal gas equation

\frac{P_1(V_1)}{T_1} = \frac{P_2(V_2)}{T_2}

\frac{(0.9)(50)}{298} = \frac{(1) V_2}{273}

V_2 = 41.22 ml

Therefore the volume of sample at STP is = 41.22 ml

4 0
3 years ago
Find the mass, in grams, of 5.00*10^23 molecules of F2
Westkost [7]

Answer:   31.55 g

Explanation:

- The mass number of Fluoride atom (F) = 18.99 g/mol, so mass number of         fluorine gas (F2) = 37.98 g/mol.

-  1 mole of (F2) [which has 37.98 g/mol] contains Avogadro’s number of molecules (6.02×10^23 molecules),

   so   1 mole of (F2) with 37.98 g/mol →  6.02×10^23 molecules.

- Using cross multiplication,  

                               37.98 g/mol of (F2)        →       6.02 ×10^23 molecules

                                                       ?              →        5.00 ×10^23 molecules

Hence the mass of 5.00×10^23 molecules of F2 = (37.98 × 5.00 × 10^23) / 6.02 ×10^23 = 31.55 g..


7 0
4 years ago
Given the reaction at equilibrium:
VLD [36.1K]

Answer:

decrease

Explanation:

because the equilibrium will shift to  right side

8 0
3 years ago
Global climatic patterns are changing because of the melting of polar ice caps. The melting of polar ice caps is an example of t
Kryger [21]

Answer:

atmosphere and hydrosphere

Explanation:

The polar ice caps are part of the cryosphere, which in turn is part of the hydrosphere, which is the sphere that contains all the waters on the planet. The atmosphere has been experiencing changes, with the increase of greenhouse gasses being the most noticeable and most important one. These gasses have contributed to the rise of the global temperatures. As the temperatures have been rising, the ice started to melt, thus it was influenced by the atmosphere, and as it is melting it is getting into the ocean water, thus increasing them. The more water there is in liquid form, and the higher the temperatures are, the higher the evaporation will be, so there will an increase in the amount of water vapor in the atmosphere. This is a nice example of the interaction between these two spheres.

5 0
4 years ago
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