As the hydrogen gas was burning, a line spectra was observed, which is show below

What is the definition of DNA in meiosis

mario62 [17]

Like mitosis, meiosis is a form of eukaryotic cell division. However, these two processes distribute genetic material among the resulting daughter cells in very different ways. meiosis gives rise to four unique daughter cells, each of which has half the number of chromosomes as the parent cell. Because meiosis creates cells that are destined to become gametes (or reproductive cells), this reduction in chromosome number is critical — without it, the union of two gametes during fertilization would result in offspring with twice the normal number of chromosomes!

6 0

3 years ago

An atom has 9 electrons and 9 protons at the start. If it loses 2 electrons, the net charge on the atom will be . If the atom in

lara31 [8.8K]

Loses two = +2
gains 4 = -4

8 0

3 years ago

Read 2 more answers

(Gamergirl223)

34kurt

The answer is: To demonstrate that the liquid is a mixture, the scientist can perform the chromatography.

Mixture: They are formed when two elements or compounds are combined physically and not chemically.

What are the types of mixtures?

Mixtures are divided into two categories :Homogeneous and heterogeneous.

Homogeneous mixtures- They have the same composition throughout their mass and there are no visible boundaries between the components of the mixture. Example- Sugar solution, salt solution, alloys, alcohol dissolved in water.

Heterogeneous mixture- They do not have the same composition throughout there are visible boundaries between the components of the mixture. Example- Milk, sand, and iron fillings, solution of $CaCO_3$ , solution of $K_2Cr_2O_7$ .

To demonstrate the the given liquid is a mixture, the scientist can perform Chromatography.
Chromatography is based on the different rates of adsorption of components of a mixture on a suitable adsorbent.
When a drop of a mixture of substances is put on a chromatogram paper and the paper is dipped in a solvent, the substance that is more soluble in the solvent rises faster compared to others. And due to this difference in adsorption of different substances, they are separated by the method of chromatography.
If two spots are seen on a chromatogram that means the liquid is a mixture and if only one spot is visible, that suggests that liquid is a pure liquid.

To learn more about the mixture and chromatography, visit:

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3 0

2 years ago

According to the images, the water level Lake Chad has been greatly reduced. For over twenty years, scientists have been using

horrorfan [7]

It's satellite imagining. i just took the test on USATP.
I hope this helps!
( next time make sure to write the answer choices as well so it's easier for people to understand)

7 0

3 years ago

Rank the following in order of increasing surface tension at a given temperature, and explain your ranking:

mel-nik [20]

The correct order of increasing surface tension at a given temperature, CH(OH)CH₂ OH >CH₃CH₂CH₂OH>HOCH₂ CH₂ OH>HOCH₂

With higher intermolecular pressures, a molecule's surface tension rises. Here, every molecule that is there has a hydrogen bond. It is well known that as the number of O-H bonds in a given molecule increases, so does the degree of hydrogen bonding. Strong intermolecular forces are thought to exist in molecules with more H-bonds. Due to the hydrogen bonds between water molecules, it has the highest surface tension of any liquid, save for mercury. Water molecules near the liquid's surface that are in contact with air are held tightly together by surface tension to create an imperceptible film.

Learn more about Surface tension here-

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3 0

1 year ago