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2 years ago

Which fact is most important in causing phospholipids to behave as they do in water?.

Chemistry

2 answers:

nevsk [136]2 years ago

8 0

Answer: Water molecules make hydrogen bonds

Explanation: The hydrogen bonds in water exclude the nonpolar tails of phospholipids, forcing the molecules into a bilayer

Ulleksa [173]2 years ago

6 0

Answer:

Water molecules make hydrogen bonds

Explanation:

This happens when the hydrogen bonds in water exclude the nonpolar tails of phospholipids, forcing the molecules into a bilayer.

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Determine the oxidation states of the elements in the compounds listed. None of the oxygen-containing compounds are peroxides or

Ahat [919]

Answer :

Oxidation number or oxidation state : It represent the number of electrons lost or gained by the atoms of an element in a compound.

Oxidation numbers are generally written with the sign (+) and (-) first and then the magnitude.

Rules for Oxidation Numbers are :

The oxidation number of a free element is always zero.
The oxidation number of a monatomic ion equals the charge of the ion.
The oxidation number of Hydrogen (H) is +1, but it is -1 in when combined with less electronegative elements.
The oxidation number of oxygen (O) in compounds is usually -2.
The oxidation number of a Group 17 element in a binary compound is -1.
The sum of the oxidation numbers of all of the atoms in a neutral compound is zero.
The sum of the oxidation numbers in a polyatomic ion is equal to the charge of the ion.

Now we have to determine the oxidation state of the elements in the compound.

(a) $H_2SO_4$

Let the oxidation state of 'S' be, 'x'

$2(+1)+x+4(-2)=0\\\\x=+6$

Hence, the oxidation state of 'S' is, (+6)

(b) $Ca(OH)_2$

Let the oxidation state of 'Ca' be, 'x'

$x+2(-2+1)=0\\\\x=+2$

Hence, the oxidation state of 'Ca' is, (+2)

(c) $BrOH$

Let the oxidation state of 'Br' be, 'x'

$x+(-2)+1=0\\\\x=+1$

Hence, the oxidation state of 'Br' is, (+1)

(d) $ClNO_2$

Let the oxidation state of 'N' be, 'x'

$-1+x+2(-2)=0\\\\x=+5$

Hence, the oxidation state of 'N' is, (+5)

(e) $TiCl_4$

Let the oxidation state of 'Ti' be, 'x'

$x+4(-1)=0\\\\x=+4$

Hence, the oxidation state of 'Ti' is, (+4)

(f) $NaH$

Let the oxidation state of 'Na' be, 'x'

$x+(-1)=0\\\\x=+1$

Hence, the oxidation state of 'Na' is, (+1)

4 0

3 years ago

20 pts ‼️ An unmanned spacecraft travels to mars. Mars has a lower strength of gravity than Earth. Where in the image is the spa

vlabodo [156]

the unnamed spacecraft which travels to Mars, will have the greatest weight on the Earth.

4 0

4 years ago

How many atoms does the formula 2HgO have?

yKpoI14uk [10]

Answer:

Explanation:

2HgO

2 * 1 Hg atom = 2 Hg atoms

2 * 1 O atom = 2 O atoms

2+2 = 4 atoms total

3 0

3 years ago

Changing atmospheric conditions, like increasing carbon dioxide content, might possibly _____.

kobusy [5.1K]

<span>Changing atmospheric conditions, like increasing carbon dioxide content, might possibly increase the risk of global warming. Carbon dioxide, along with other greenhouse gases, is one of the leading causes of our Earth's rise in temperature. This is because greenhouse gases trap the planet's heat inside its atmosphere, preventing it from leaving the Earth's surface. </span>

5 0

4 years ago

Consider the following reaction at equilibrium. What will happen if SO2SO2 is added to the reaction? 4FeS2FeS2(s) + 11O2O2(g) ⇌⇌

kupik [55]

Answer:

The equilibrium will change in the direction of the reactants

Explanation:

7 0

3 years ago