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Yuliya22 [10]
3 years ago
14

Which is a description of a pattern displayed by elements in the periodic table?

Chemistry
2 answers:
dexar [7]3 years ago
6 0
The correction option is C. In the periodic table elements are arranged in periodic repetition of their properties using their atomic numbers.
Alexandra [31]3 years ago
4 0
C.

The elements are arranged by atomic number and their properties repeat after every period.
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What component of amino acid structure varies among different amino acids?
givi [52]

Answer

The components of the r group of amino acid structure varies among different amino acids

Explanation  

As the functional group for amino acids is as:  

R-CH-COOH  

 I  

NH2  

only R differs so amino acids also differs. If R is “H” then amino acid is glycine and if R is “CH3” then amino acid is alanine. Hence, R is different for different amino acids. Other components as alpha carbon ( C ), carboxyl group ( COOH ) and amino group ( NH2 ) is fixed for every amino acid.  

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3 years ago
Arkeisha and Rodney are having a discussion about the correct use of the term "battery acid." Arkeisha insists that an alkaline
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Arkeisha is correct because the fluid in an alkaline battery has a ph between 7.1 and 14.0
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iragen [17]

Answer: its A

Explanation:

4 0
3 years ago
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Compare and contrast the Kelvin scale and the Celsius scale
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Boiling temperature for water (at standard pressure) 99.9839 373.1339
6 0
2 years ago
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PLEASE HELP ANSWER THIS. (a) Which two conditions must be fulfilled by balanced ionic equations? select all that apply
SCORPION-xisa [38]

Answer:

Explanation:

The first two answers are the correct ones. Sometimes C can be true, but it is not a condition. Some equations produce many more products than reactants and some equations are made from more reactants than products.

The last one is normally not true, but the three equations I choose below do give D to be true. Still it does not happen all the time.

C8H18 + 12.5 O2  ===> 8CO2  + 9H20    This is the combustion equation that drives your engine. The coefficients do not add.

Same number of reactants as products.

CH4 + 2O2 ==> CO2 + 2H2O

More products than reactants.

Cu + 4HNO3 ==> Cu(NO3)2 + 2NO2 + 2H2O

More Reactants than products.

H2 + I2 ==> 2HI

7 0
3 years ago
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