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zvonat [6]
4 years ago
6

A physical property is a characteristic of a substance is one that _____.

Chemistry
1 answer:
saul85 [17]4 years ago
8 0

A is the answer u need

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PLEASE ANSWER ASAP !! NEED HELP ON THIS TEST !
8_murik_8 [283]

The Correct option is :

  • Fluorine

  • Chlorine

  • Iodine
8 0
3 years ago
Write skeleton equations for the following reactions
mojhsa [17]
Al +3CuCl--->AlCl3+3Cu , its balanced equation
8 0
3 years ago
Sarah is writing a paper explaining protein formation. Choose the correct way to complete each sentence.
Amanda [17]

Answer :

Amino acids join by forming (1) peptide bonds.  Water is released.

The chains of amino acids vary according to their (2) side chains, which each have differing makeup.  

These chains determine the protein’s structure and they fold to create a unique (3) third-dimensional shape.

Explanation :

Amino acid : The amino acids are the building blocks of protein. Amino acids are the compound which consist both amine (-NH_2) and carboxylic (-COOH) groups along with the side chains. In the protein, many amino acids are linked by the peptide bonds.

Th peptide bonds are formed by the combining of amino group of one amino acid to the carboxylic group of another amino acid by releasing of water.

Some examples of amino acids are glycine, lysine, alanine, etc.

Peptide bond formation image is shown below.

In the image 'R' can be contained by different groups like hydrogen, methyl, phenyl, etc

8 0
3 years ago
a sample of solid is decomposed and found to contain 6.52g of potassium, 4.34 g of chromium and 5.34 of oxygen, what is the empi
Fynjy0 [20]

Answer:

K₂CrO₅

Explanation:

The empirical formula is the simplest formula of a compound. To find the empirical formula, we follow the procedure below:

Elements                         Potassium                 Chromium         Oxygen

Mass                                  6.52                             4.34                  5.34

Molar mass                          39                               60                      16

Number of moles             6.52/39                     4.34/60             5.34/16

                                             0.167                          0.072              0.333

Divide through by

the smallest                      0.167/0.072             0.072/0.072          0.333/0.072

                                            2.3                               1                                4.6

                                             2                                 1                                  5

Empirical formula K₂CrO₅

5 0
3 years ago
13. Acid-catalyzed dehydration-condensation reactions of carboxylic acids and alcohols produce chemicals called
Sliva [168]

Answer:

A condensation reaction joins two larger molecules by splitting out a smaller molecule — usually water or ammonia — between them.

In an esterification reaction, an OH  from the acid and an H from the alcohol form a molecule of water.

The larger parts join to form the ester.

Ethanol and butanoic acid react to form ethyl butanoate.

7 0
3 years ago
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