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Snezhnost [94]
3 years ago
6

What do all atoms and ions of sodium have in common?

Chemistry
1 answer:
nata0808 [166]3 years ago
7 0

They all have the same number of protons (12).

The number of protons (the atomic number) is the same for all atoms and ions of Na.

However, atoms and ions have different numbers of electrons.

An <em>Na atom</em> has 11 electrons, but an <em>Na^(+) ion</em> has only 10 electrons.

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If a position time graph has a constant slope, what can you infer about the<br> acceleration?
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Answer:

Acceleration is zero.

Explanation:

The slope of a position time graph gives the velocity of the body.

If the slope is constant means the velocity is constant.

Now, acceleration is the measure of the change in velocity of a body over a given time interval.

So, the acceleration of a body is directly proportional to the change in velocity of the body.

If there is no change in velocity, this means that the acceleration of the body is zero.

Here, the slope is a constant implying that the velocity is a constant. So, there is no change in velocity. This implies that the acceleration is zero for the body in the given time interval.

Thus, if a position time graph has a constant slope, one can infer that the  acceleration is zero.

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3 years ago
What are two things plants have which animal cells do not
lyudmila [28]

Answer:

Animal cells don't have a dividing cell wall like plant cells do

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Plants cells use photosynthesis from the sun, which requires them to have chloroplast filled with chlorophyll to complete this function; animal cells do not have chloroplasts

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3 years ago
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. Divide 94.20 g by 3.167 22 mL.
jeka94
94.20 g/3.16722 mL = 29.74 g/mL

The ratio of mass to volume is equal to the substance's density. Thus, 29.74 g/mL is the density of whatever substance it may be. Density does not change for incompressible matter like solid and some liquids. Although, it may be temperature dependent.
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Report the number 315.05 to 3 significant figures.
emmainna [20.7K]

Answer:

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Explanation:

Hello.

In this case, since the given number has five significant figures as the zero is to the right of the first nonzero digit (3), if it is required to report it with three significant figures, it is necessary to "cut" it at the first five without any rounding since the subsequent zero is less than five.

Thus the number turns out:

315

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Which statement best describes the main benefit to organisms that reproduce sexually?
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