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Ghella [55]
4 years ago
5

If most objects are made up of free space then why can we put our hands through a book or wall?

Chemistry
1 answer:
Mazyrski [523]4 years ago
4 0
I suppose you mean to ask why we can't go through obstacles.

Any atom is surrounded by an electronic cloud. When two atoms get close to each other, the electronic clouds repel each other, preventing them from interpenetrating each other. That same phenomenon, on a larger scale, prevents us from going through matter.
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Please help I’ll mark brainliest :)
DerKrebs [107]

Answer:

Biotechnology is the use of living organisms through modification to  make products of technological or industrial significance.

positively, biotechnology can be used in manufacture of medicine and also synthetic forms of various hormones for use in the health and medical field.

negatively biotechnology may be manipulated for use in wars as biological warfare that can lead to loss of lives and environmental degradation

Explanation:

4 0
3 years ago
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Does adding salt to pasta make it cook faster
VashaNatasha [74]
No it does not it cooks the same speed
4 0
3 years ago
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What are the genotypes and phenotypes of the offspring in this image?
soldier1979 [14.2K]

Answer:

Genotypes: Hh, Hh, hh, and hh

Phenotypes: Short Hair, Short Hair, Long Hair, Long Hair

Have a nice day! ^-^

6 0
3 years ago
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What is the total mass of NaNO3 that must be added to 70g in 100 grams of H2O to make a saturated solution at 30°C ?
dimulka [17.4K]

Answer:

58g

Explanation:

In order to solve this problem, you must take a look at the solubility graph for potassium nitrate.

Now, the solubility graph shows you how much solute can be dissolved per 100g of water in order to make an unsaturated, a saturated, or a supersaturated solution.

You're looking to make a saturated potassium nitrate solution using

50g of water at 60∘C. Your starting point will be to determine how much potassium nitrate can be dissolved in 100g of water at that temperature in order to have a saturated solution.

As you can see, the curve itself represents saturation.

If you draw a vertical line that corresponds to 60∘C and extend it until it intersects the curve, then draw a horizontal line that connects to the vertical axis, you will find that potassium has a solubility of about

115g per 100g of water. Your answer is 58g of potassium nitrate

7 0
4 years ago
A scientist formulates the following hypothesis: If plants of the same species
Blababa [14]

Answer:

Growth rate

Explanation:

The responding variable, also known as the DEPENDENT VARIABLE, is the variable that responds to changes or manipulations made to another variable (independent or manipulable variable) in the experiment. It is the measured variable of an experiment.

According to the hypothesis provided for this investigation, the scientist wants to determine if the amount of fertilizer plants of the same species receive will affect their growth rate when planted in the same condition. This shows that the independent variable is the amount of fertilizer to be used while the RESPONDING VARIABLE OR DEPENDENT VARIABLE is the GROWTH RATE OF THE PLANTS because it responds to the amount of fertilizer.

7 0
3 years ago
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