If you change the number of an atom has, it becomes a different element. If you change the number of it has, it becomes a different isotope.

Answers

Answer 1

Answer:

Answer:

If you change the number of protons an atom has, it becomes a different element. If you change the number of nutrons it has, it becomes a different isotope.

Explanation:

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the average adult human male has a total blood volume of 5.0 L. if the concentration of sodium ion in this average individual is 0.135 M, what is the mass of sodium ion circulating in the blood?

Answers

Molarity is a way of expressing concentration that is equal to the ratio of the moles of the solute to the liters of solution. The amount of substance in moles can be calculated through,
moles = (molarity) x (volume in liters)
Substituting the values,
moles = (0.135 M) x (5.0 L) = 0.675 moles
Multiply this value with the molar mass of sodium ion,
mass = (0.675 moles) x (23 g/ mole) = 15.525 grams
Therefore, the mass of sodium ion in the blood is 15.525 grams.

Which is the best metal to use in an alloy to increase its electrical conductivity

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Copper would be the best

Silver, Copper, Gold, Aluminum, and brass are the top best conductors in that order. Silver being best and brass still being good but not better than the others. I would try you luck with silver and copper the most.

As ocean depth increases, _____. temperature increases density decreases salinity increases pressure decreases

Answers

Answer:

The correct option is: salinity increases

Explanation:

Ocean is a large water body that is a division of the World Ocean. An ocean is divided into various vertical zones based upon the physical and biological conditions.

The halocline zone is characterized by a rapid increase in the salinity with the increase in the depth. Thus resulting in decrease in the temperature of maximum density with the increase in salinity.

Answer:salinity increases

Explanation:

What is the maximum amount of NaCl that can dissolve in 300 g of water? (the solubility of NaCl is 36.2 g/100 g H2O at 20 ⁰C.) please don't do the work.What chemistry equation do I have to use to solve this?

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102g is the amount that can be dissolved

Suppose that geneticists developed a strain of bacteria that breaks down polyethylene, an otherwise non biodegradable plastic. How would such bacteria be useful? Do you foresee any dangers from these new bacteria?

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Polyethylene is a widely used substance for manufacturing plastic. A bacteria like that could "eat" plastic garbage made from polyethelene which would be really helpful. The danger is that a bacteria can't differentiate between junk and useful things made out of PE, so they would eat everything made from it.

23 Which term identifies the half-reaction that occurs at the anode of an operating electrochemical cell?(1) oxidation (3) neutralization
(2) reduction (4) transmutation

Answers

Answer: The correct answer is Option 1.

Explanation:

Electrochemical cell is defined as the device that is used for the conversion of the chemical energy produced in a redox reaction into the electrical energy. In this cell, oxidation reaction occurs at anode and reduction reaction occurs at cathode.

For the given options:

Option 1: Oxidation reaction

Oxidation reaction is defined as the chemical reaction where a substance looses its electrons. The oxidation state of this substance gets increased and the substance gets oxidized.

$X\rightarrow X^(n+)+ne^-$

Option 2: Reduction reaction

Reduction reaction is defined as the chemical reaction where a substance gains electrons. The oxidation state of this substance gets reduced and the substance gets reduced.

$X^(n+)+ne^-\rightarrow X$

Option 3: Neutralization reaction

Neutralization reaction is defined as the chemical reaction where an acid reacts with a base to produce a salt and water molecule.

$HX+BOH\rightarrow BX+H_2O$

Option 4: Transmutation

This is defined as the process in which a nucleus is converted to another nucleus.

From the above information, at anode, oxidation reaction occurs. Thus, the correct answer is option 1.

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