CHEMISTRY HIGH SCHOOL

What is the maximum number of covalent bonds that can be formed by one carbon atom? 1 2 3 4

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Answer 1
Answer: The maximum number of covalent bonds formed by a single carbon atom is 4

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There are several ways to model a compound. One type of model is shown. A central C attached to 3 C's by 1 line each, each of the 3 C's being attached to 3 H's by a 1 line each. The central C is also attached by 1 line to a C, which is attached to 2 H's and a C by a single line each. The C is attached by 2 lines to an O ad by 1 line to another O. The O with 1 line is attached by 1 line to an H. What is the chemical formula for the molecule modeled? CHO C4H11O2 C6H12O2 C6H9O

Write these numbers rounded to the three nearest significant figures

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Answer:

(a) 52.2 mL helium

(b) 18.0 g nitrogen

(c) 78.5 mg MSG

(d) 23,600,000 mm wavelength

(e) 0.00420 kg lead

Rounded the numbers to three nearest significant figures.

Which statements about hydrogen bonding in water are true?a. The hydrogen atoms of a water molecule have a partial positive charge.
b. The oxygen atom of a water molecule is more electronegative than a hydrogen atom.
c. The hydrogen atoms of a water molecule have a partial negative charge.
d. The hydrogen atom of one water molecule is attracted to the oxygen atom of a different water molecule.
e. The hydrogen atom of a water molecule is attracted to the oxygen atom of the same water molecule.
f. The oxygen atom of a water molecule has a partial positive charge.
g The oxygen atom of a water molecule has a partial negative charge.

Answers

Answer:

The answer to your question is below

Explanation:

a. The hydrogen atoms of a water molecule have a partial positive charge.  True.

b. The oxygen atom of a water molecule is more electronegative than a hydrogen atom.  True

c. The hydrogen atoms of a water molecule have a partial negative charge.  False

d. The hydrogen atom of one water molecule is attracted to the oxygen atom of a different water molecule.  True

e. The hydrogen atom of a water molecule is attracted to the oxygen atom of the same water molecule.  False,

f. The oxygen atom of a water molecule has a partial positive charge.  True

g The oxygen atom of a water molecule has a partial negative charge. True

Carvone is a substance that occurs in two forms having different arrangements of the atoms but the same molecular formula (c10h14o) and mass. one type of carvone gives caraway seeds their characteristic smell, and the other type is responsible for the smell of spearmint oil. calculate the mass percent of each element in carvone.

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The molecular mass of Carvone is calculated as;

                          =  12 (C)₁₀  +  1.008 (H)₁₄  +  16 (O)

                          =  120  +  14.112  +  16

                          =  150.112

%age of Carbon;

                          =  (120 ÷ 150.112) × 100

                          =  79.94 %

%age of Hydrogen;

                          =  (14.112 ÷ 150.112) × 100

                          =  9.40 %

%age of Oxygen;

                          =  (16 ÷ 150.112) × 100

                          =  10.65 %

Choose the correct equation to represent the following statement (unbalanced chemical equation):Aluminum reacts with hydrochloric acid to yield aluminum chloride and hydrogen.

A. AlCl3 + H2 Al + HCl
B. Al + HCl AlCl3 + H2
C. Al HCl + AlCl3 + H2
D. Al + HCl AlCl3 + H2O

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B. Al +HCI AICI3 +H2. I hope this helps

identify the statement which is incorrect. sulphur is an integral part of cysteine glycine is an example of lipids lecithin contains phosphorus atom in its structure tyrosine possesses aromatic ring in its structure

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