When a potassium atom forms an ion, it loses one electron. What is the electrical charge of the potassium ion?A. -1
B. -2
C. +2
D. +1
Answers
the answer is (D.) +1
I hope this helps.
When a potassium atom loses one electron, it forms a potassium ion. Since electrons carry a negative charge, losing one electron results in an overall positive charge for the ion. Therefore the correct answer is (D).
A potassium atom normally has 19 protons and 19 electrons. The number of protons and electrons is equal, so the atom is electrically neutral overall.
However, when a potassium atom loses one electron, it means that it now has 19 protons and only 18 electrons. Since protons are positively charged and electrons are negatively charged, losing one negatively charged electron leaves the atom with a net positive charge.
Since there is one more positive charge than a negative charge, the potassium ion has a positive charge of +1. This means the potassium ion has one more positive charge than it has negative charges, making it a cation with a +1 electrical charge.
In summary, when a potassium atom loses one electron, it becomes a potassium ion with a positive charge of +1. Therefore the correct answer is (D).
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Simplified answer:
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16 km north.
11 km west.
6km south.
2 km south
Answers
Answer:
The displacement = 2 km south.
Explanation:
Given:
Displacement vectors.
- (i) Of 4 km south.
- (ii) 2 km north.
- (iii) 5 km south.
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Total displacement :Displacement is the shortest distance from the initial point of any vector.
We have to work this in a Cartesian co-ordinate where we have y axis as North and South (negative y-axis).
Lets move 4 km towards south that is 4 units on negative y-axis.
The points will be .
Now move 2 km upward (towards north) that is toward positive y-axis.
So the points are .
From here again 5 km downward (towards south).
Points of the co-ordinates are .
Finally move 5 km upwards (towards north).
Points of the Cartesian are .
So (0,-2) means that the displacement vector is toward south and is 2 km way from the origin that is .
Total displacement is of 2 km in south.
Answers
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the answer to the question is the part that is reflected by clouds and atmosphere 26%
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If all of Earth's polar ice melts, the global sea level and average global temperature would increase, while the area covered by ice in the polar regions would decrease.
Explanation:
If all of Earth's polar ice melts, several parts of the graph would increase. One part that would increase is the global sea level. As the ice melts, the water would contribute to higher sea levels. Another part that would increase is the average global temperature. The melting ice would release more greenhouse gases, which would further contribute to global warming. Hurricanes and extreme weather events would also increase in frequency and intensity.
On the other hand, the part of the graph that would decrease is the area covered by ice in the polar regions. With the melting of the polar ice, the ice extent would significantly shrink, leading to decreased ice coverage over the Arctic and Antarctic regions.
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Power, as you should have learned in your class, is a rate; it needs to be multiplied by time to get the amount of energy
Thus, your answer...time.
To calculate power, divide the amount of energy transferred by time.
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Power in physics is the rate of energy transferred per unit time. It can be calculated by dividing the amount of energy transferred by the time required for the transfer.
Explanation:
In Physics, power is defined as the rate of transferring energy or the amount of energy per unit time. If you want to calculate the power, you take the amount of energy transferred and divide it by the time it takes for that transfer to occur. For example, if a light bulb transfers 100 joules of energy over 10 seconds, the power would be 100 joules divided by 10 seconds, which equals to 10 watts.
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The weight of an object is the force it experience by the gravitational pull of the planet. The gravitational pull by earth is greater than that from moon. This leads to greater weight in earth than in moon.
What is gravitational force ?
Gravitational force is a kind of force by which an object attracts other objects into its center of mass. The force exerted between the objects depends on the mass and distance between them.
Earth exerts a gravitational pull to every objects on its surface and that's why we are standing on the ground. We experience a weight downwards due to this force.
The acceleration due to gravity in earth = 9.8 m/s²
g in moon = 1.63m/s².
then weight = m g
the weight of a 10 kg iron bar in earth is 98 N and that in moon will be 16.3 N.
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Answer:
The decrease in the downward force that a mass of iron can exert on the moon versus the force it exerts on earth is due to:
- The force of gravity on Earth is greater than the force of gravity on the moon.
Explanation:
To recognize the calculation within the statement, you must know that the Newton unit is equal to:
- Newton = (Kilogram * meter) / second ^ 2
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Finally, you must know the force formula (since we are talking about a descending force):
- Force = mass * acceleration (gravity is a measure of acceleration)
Since the mass in both cases is the same (10 kilograms), the variation in acceleration will provide different values of descending force, as shown below, replacing the values:
- Downward force on Earth = 10 Kg * 9,807 m / s ^ 2 = 98.07 Kg * m / s ^ 2 = 98.07 Newtons.
- Downward force on the Moon = 10 Kg * 1.63 m / s ^ 2 = 16.3 Kg * m / s ^ 2 = 16.3 Newtons.
As you can see, when it comes to force, the less acceleration (in this case less gravity), the lower the downward force will be with a mass of equal weight.