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prohojiy [21]
3 years ago
10

John performs an experiment on an electric circuit. He increases the voltage from 25 volts to 50 volts while keeping the resista

nce constant. What will be the effect of John’s changes on the current? A. The current will increase. B. The current will decrease. C. The current will stay constant. D. The current will stop flowing.
Chemistry
2 answers:
masya89 [10]3 years ago
6 0

Ohms law states: voltage = current x resistance

while keeping the resistance constant

increases the voltage from 25 volts to 50 volts will increase the current. ans is A


Nadusha1986 [10]3 years ago
5 0
The current will increase
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PH scale is from 1 to 14 and indicates how acidic or basic a solution is. To find pH or pOH we need to know the H⁺ ion concentration or OH⁻ concentration.
pH can be calculated using the following equation;
pH = -log[H⁺]
the H⁺ concentration of the given acid is 1.0 x 10⁻⁴ M. substituting this we can find the pH 
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pH = 4
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3 years ago
Explain the difference between heat and temperature. Does 1 L of water at 658°F have more, less, or the same quantity of energy
pogonyaev

The answer is- The energy of 1 L water at temperature 347.78 °C have more energy as 1 L of water at temperature 65°C.

Heat is a type of energy that causes a person's body to feel hot or cold.

While the temperature of an object is a parameter that indicates how hot or cold the object is.

How is the temperature in degree Fahrenheit converted to degree celsius?

  • To convert the temperature in Fahrenheit to Celsius, subtract 32 and multiply by 5/9.

°C =( ^0F -32) * \frac{5}{9}

  • Now, heat is a form of energy that flows from hotter object to colder object and temperature indicates whether the object is hot or cold by measuring its average kinetic energy.
  • Now, the given temperature of 1 L water is 658 °F. This temperature in degree celsius is calculated as-

°C = (658 F-32) *\frac{5}{9} = 347.78 \° C

  • Now, higher the temperature, higher is the energy of water. Thus, the energy of 1 L water at 347.78 °C have more energy as 1 L of water at 65°C.

To learn more about heat and temperature, visit:

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3 0
2 years ago
The standard cell potential (E°cell) for the reaction below is +0.63 V. The cell potential for this reaction is ________ V when
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Answer: 0.52V

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5 0
3 years ago
What is chemistry?????​
Thepotemich [5.8K]

Answer:

chemistry - the science that studies the properties of substances and natural fenomens .

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3 years ago
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Radioactive americium-241 is used in household smoke detectors and in bone mineral analysis.
Varvara68 [4.7K]

Answer:

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An atom of Am-241 contains 95 protons, 95 electrons and 146 neutrons.

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