Answer:
A chemical formula is a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule, using chemical element symbols, numbers, and sometimes also other symbols, such as parentheses, dashes, brackets, commas and plus and minus signs. These are limited to a single typographic line of symbols, which may include subscripts and superscripts. A chemical formula is not a chemical name, and it contains no words. Although a chemical formula may imply certain simple chemical structures, it is not the same as a full chemical structural formula. Chemical formulae can fully specify the structure of only the simplest of molecules and chemical substances, and are generally more limited in power than are chemical names and structural formulae.
Explanation:
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Which best explains the process of meiosis?
Meiosis includes cytokinesis, which divides the cell's DNA.
Meiosis is a series of steps that divides the cell's cytoplasm.
Meiosis includes interphase, which divides the cell's cytoplasm.
Meiosis is a series of steps that divides the cell's DNA.
Answer:
D
Explanation:
Meiosis is a series of steps that divides the cell's DNA best explains the process of meiosis. Therefore, option D is correct.
What is meiosis ?A type of cell division in which each daughter cell receives half the DNA of the parent cell. In mammals, meiosis occurs during the formation of egg and sperm cells.
Due to the fact that cell division occurs twice during meiosis, a single starting cell can produce four gametes (eggs or sperm). Cells go through four stages during each round of division: prophase, metaphase, anaphase, and telophase.
Meiosis is also important for allowing genetic diversity and facilitating the repair of genetic defects via recombination.
Daughter cells are diploid after meiosis and have twice as much genetic material, which can be divided in an infinite number of ways.
Thus, option D is correct.
To learn more about the meiosis, follow the link;
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A cup of hot water contains fewer molecules than a tub of hot water. This same cup of hot water will freeze faster than a tub of hot water. The total thermal energy of a system is not only dependent on the state of the material but also on the (resistance, heat, temp, half-life) and the total number of (atoms, currents, compounds, electromagnetic waves) in the system.
Answer:
The correct options are;
1) Heat
2) Atoms
Explanation:
The heat required to raise a unit mass of a substance by one degree which is the specific heat capacity of the substance, is a quantity characteristic of a given substance and the amount of temperature change experienced by the substance when an amount of heat energy transferred to the substance is a function of the mass of the substance, which is a function of the number of atoms present in the substance.
So also, the total thermal energy that is stored by a substance, that causes a given amount of temperature change, is a function of the heat capacity of the substance.
In science class, a student is given a copper cylinder to investigate. The student measures the mass of the cylinder as 53.76 grams. The
student measures the volume of the copper as 6 cm. Which additional property of the copper can the student determine from these
measurements?
Answer:
From these two values, i.e. mass and volume, density of the copper cylinder can be calculated.
Formula of density is :
Density = Mass / volume.
Now we have mass: 53.76g and volume 6cm³
Density = 53.76 / 6
Density= 8.96 g/cm³
Identify the property of the matter described below.
Alcohol floats on top of the water.
A-pH
B-conductivity
C-density
D-luster
Answer: C.
Explanation: Alcohol floats on oil and water sinks in oil. Water, alcohol, and oil layer well because of their densities, but also because the oil layer does not dissolve in either liquid. The oil keeps the water and alcohol separated so that they do not dissolve in one another. ... Water sinks because it is more dense than oil.