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uysha [10]
3 years ago
5

About 3% of the water on Earth is freshwater. Only about 40% of that freshwater is available for human use. Why is so much fresh

water unavailable for human use?
Chemistry
2 answers:
Lesechka [4]3 years ago
6 0

Answer:

Because it is Frozen.

Explanation:

OverLord2011 [107]3 years ago
5 0
Because the freshwater is polluted.
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Difference between proton and electron​
Vanyuwa [196]

Answer:

An electron is a negatively charged component of an atom

the proton is a positively charged body.

Explanation:

3 0
2 years ago
Which line (A or B) represents a faster<br> speed?
BartSMP [9]

Answer:

A

Explanation:

Because in 1 second, line A was faster than line B.

3 0
3 years ago
What is the name of the compound with the formula NaOH ?
vladimir2022 [97]

Answer:

Sodium hydroxide

Explanation:

Sodium hydroxide ( NaOH ) -

Sodium hydroxide is an inorganic compound , and is also called caustic soda and lye .

It is an ionic compound , which is white in color and is in solid state .

The cation and anion of this salt are the sodium cation Na⁺  and the hydroxide anions OH⁻ .

<u>It is highly basic in nature and is soluble in water , and when left open in air it can readily absorb moisture from the air , to form a hydrated sodium hydroxide .</u>

4 0
3 years ago
The osmotic pressure, π, of a solution of glucose is 132 atm . find the molarity of the solution at 298 k.
Marina86 [1]

The formula for osmotic pressure is:

\Pi = iMRT

where \Pi is osmotic pressure, i is van't Hoff's factor, M molarity, R is Ideal gas constant, and T is Temperature.

\Pi = 132 atm

The van't Hoff's factor for glucose, i = 1

R = 0.08206 Latmmol^{-1}K^{-1}

T = 298 K

Substituting the values in the above equation we get,

132 atm = 1\times M\times 0.08206 Latmmol^{-1}K^{-1}\times 298

M = \frac{132 atm}{1\times 0.08206 Latmmol^{-1}K^{-1}\times 298} = 5.4797 molL^{-1} \simeq 5.48 molL^{-1}

So, the molarity of the solution is 5.48 molL^{-1}.

4 0
3 years ago
A certain metal forms a soluble sulfate salt . suppose the left half cell of a galvanic cell apparatus is filled with a solution
svp [43]

Answer:

1. The positive electrode is the one on the left

2. Ecell = 0.0582V

Note: The question is incomplete.

The complete question is given below:

A certain metal M forms a soluble sulfate salt M2SO4. Suppose the left half cell of a galvanic cell apparatus is filled with a 5.00 M solution of M2SO4 and the right half cell with a 500 mM solution of the same substance. Electrodes made of M are dipped into both solutions and a voltmeter is connected between them. The temperature of the apparatus is held constant at 20.0 °C. Which electrode will be positive? What voltage will the voltmeter show? Assume its positive lead is connected to the positive electrode. Be sure your answer has a unit symbol, if necessary, and round it to 2 significant digits.

Explanation:

1. This is a case of a concentration cell. A concentration cell acts to dilute the more concentrated solution and concentrate the more dilute solution, creating a voltage as the cell reaches an equilibrium. This is achieved by transferring the electrons from the cell with the lower concentration to the cell with the higher concentration.

Electrons flow from the right electrode to the left electrode. Therefore, the left electrode is the positive electrode (cathode).

2. See attachment below for solutions

5 0
3 years ago
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