What is nitrogen state at 20 celcius
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Family includes the least active of nonmetals
Why are some examples of a chemical reaction not actually foolproof evidence that of a chemical reaction?13, 8th grade, and I'm doing my science lab report: The lab was a chemistry lab. We got a bunch of toxic chemicals and put pairs of them together, recorded the reactions, and wrote balanced equations for each of them and identified what kind of reaction they were. The whole name of the lab is "Evidence of Chemical Reactions", and one of the first analysis questions is "write a paragraph about the kinds of changes you would expect to see if a chemical reaction occurs." I answered this with things like bubble formation, change of color, change of state of matter, etc. Then the next question said "any one of these signs is not always a fool proof indication that a chemical reaction is occurring. give two examples to support this statement." what are two examples to support the statement that the commonly known examples of chemical reactions occurring are not always foolproof evidence that chemical reactions are occurring?
Which contributes to the polarity of a water molecule?B. deflection of hydrogen atoms by lone pairs of electrons C. no difference in the electronegativity of oxygen and hydrogen
Is 2 pounds bigger than 80 ounces
The three-dimensional geometry of the atoms in the molecule
The ionic charge on each atom within the molecule
The way atoms share electrons to be connected to one another within the molecule
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Answer:
The total electron configuration of each atom in the molecule
Explanation:
Electron distribution into energy levels or sublevels of atoms can be shown with different notations or electronic configuration. One of them is the lewis dot structure.
The Electron Dot Notation or Lewis Dot structure is a notation which shows only the chemical symbol of the element surrounded by dots to represent the valence electrons. The chemical symbol stands for the nucleus and all electrons except the valence ones. The dots are arranged at the four sides of the symbol in pairs called lone pairs Those that are unpaired are called odd electrons.
Use dimensional analysis to find the number of cm/min in 5.8 m/hr. Show your work. Be sure to calculate the answer in the correct number of significant figures.
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Answer:
Explanation:
Q1. For assuring accuracy and precision we have to take into account statistical values such as absolut error, relative error and standard deviation. Errors(absolute and relative) are related to accuracy, and they tell you how much you are getting away from the correct answer. Standard deviation tells you how precisa your measure was, that means how many times you hit on the objective.
standard deviation can be added to the result as
Q2.
Q1: sort your numbers into numerical order so you can determine the highest and lowest measured values. and then subtract the lowest measured value from the highest measured value. Now determine that the answer is the precision.
Q2: In one meter there are 100 centemeter. Now you got 5.8 miles per hour which will become 580 centemeter per hour. In addition, there are 60 minutes in an hour. Based on what we know, 580 centemeters per hour will and should become 580/60 cm/min
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Temperature increases and pressure decreases.
Temperature increases and pressure increases.
Temperature decreases and pressure increases.
Temperature decreases and pressure decreases.
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Answer:
c
Explanation:
Answer:
option 2
Explanation:
temperature decreases as you are further away from the sun and less thermak energy is reaching you. the pressure increases as more water is above you.
(pls give brainliest T.T)
larger bills in the pelican and its offspring?
Inheritance of an quoted trait
A mutation
Natural selection
A change in diet
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Answer:
natural selection
Explanation:
it is a biological selection of genes, whether dominant or negative.
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Answer: The correct answer for the blank is-
B) cytoplasm.
Cytoplasm is the fluid filled compartment ( a thick, gel like substance) within the cell of a living organism that is mainly composed of water, salts, and proteins. It is surrounded by the cell membrane ( plasma membrane) and contains all the parts of cell ( such as in eukaryotic cell, it contains all the cell organelles except nucleus). It is the site for all the essential cellular processes.
Thus, option B) is the right answer.
Answer: Option (B) is the correct answer.
Explanation:
- In a living organism, the cell which is mostly composed of water, salts and proteins is known as cytoplasm.
It is thick and gel like in nature which has fluid filled compartment.
- A chloroplast is an organelle found in the cells of plants and eukaryotic algae which are responsible for the conduction of photosynthesis.
- Nucleus is an organelle present in eukaryotic cells. It contains hereditary information of a cell and helps in controlling the growth and reproduction of cells.
- Polymers of amino acids are known as proteins. Each protein has some specific functions.
Thus, we can conclude that out of the given options cytoplasm is a gel-like substance enclosed by the cell membrane that contains the cell's organelles.