Why did me need to have the same molecules in each bottle? and what would have happened if we didn't use the same molecules?
Background info: We learned about molecules and how when a object is heated the air becomes less dense and the molecules is the opposite since they don't spread out and become more dense. What I mean with this question is in class we experimented by putting a bubble on a bottle and putting it on a hot water, the water made the molecules inside less dense and the bubble went up but when we tried cold water the bubble went down.
Answers
Answer:
it's just like doing a test grade on children if you give them different tests they might not come up with the same results, the molecules need to be the same or else the experiment will be even.
Explanation:
whenever water is hot the molecules will bounce really fast in the bottle, whenever water is cold he will go really slow in the bottle
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how to keep apples from browning without lemon juice?
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Answer:
eat
Explanation:
eat the dang apples
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How could you break down the compound calcium carbonate into the elements that make it up ?
A. by melting
B. by crushing
C. with filter
D. with chemical changes
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Answer:
A. By melting
Explanation:
You can break it down by thermal decomposition which is basically melting it and thats because many metal carbonates can take part in thermal decomposition reactions.
is a single cell the smallest structure that carries out our activities nesscesary for life
Answers
yep, the cell is the smallest unit in a living organism that is capable of carrying out all of the activities of life.
What's the Matter?
Which statements correctly describe matter? Select all that apply.
A. Matter is made up of atoms.
B. Matter is a measure of the amount of material in an object.
C. Matter may exist as a solid, liquid, or gas.
D. Matter forms when particles chemically bond together.
E. Matter includes both elements and compounds.
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Answer:
Matter is anything that takes up space and has mass. Mass is the stu that matter is made of, or the amount of particles in a substance or object. Matter has physical and chemical properties and can undergo physical and chemical changes
C. Matter may exist as a solid, liquid, or gas.
Explanation:
Can someone help me with this chemistry question please?
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C. Energy use
please mark me a brainlist
the primary difference between enhancers and promoter-proximal elements is that enhancers _____.
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Answer:
Enchancers are transcription factors
I hope that helps you
A watch loses 0.15 sec/min, how many seconds are lost in 24 hours?
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Answer:
0.15 sec/min = 9 sec/hour
9*24 = 216 seconds = 3.6 minutes
Explanation:
Answer:
216 Seconds
Explanation:
If every minute is 60 seconds than 60 multiplied by .15 is 9 Seconds Lost.
If every hour is 60 minutes compared to what we know than 24 hours multiplied by 60 is 1440 minutes.
Do the same math as before: 1440 x .15 = 216 Seconds
omg y'all pls so much help me!!!
1. H2SO4
2. MGNO3
their %
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H: 1 x 2 = 2
S: 32 x 1 = 32
O: 16 x 4 = 64
98amu
H: 2/98 x 100 = 2%
S: 32/98 x 100 = 33%
O: 64/98 x 100 = 65%
MGNO3 (I think you meant Mg(NO3)2 aka Magnesium Nitrate. So this might be wrong because I did the version you sent instead of what I thought you might mean.)
Mg: 24 x 1 = 24
N: 14 x 1 = 14
O: 16 x 3 = 48
86amu
Mg: 24/86 x 100 = 28%
N: 14/86 x 100 = 16%
O: 48/86 x 100 = 56%
for which elements are outer electrons and valence electrons the same?
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Answer:
The number of electrons in the outermost shell of a particular atom determines its reactivity, or tendency to form chemical bonds with other atoms. This outermost shell is known as the valence shell, and the electrons found in it are called valence electrons.
Explanation:
Elements of same group have same number of valence electrons and similar physical and chemical properties.
What are groups in periodic table ?A periodic table is classified into different columns and rows. The vertical columns in the table are called groups and the horizontal rows are called periods.
From left to right, the atomic number of elements increases by one and atomic size increases. Down a group, the number of electrons and atomic size as well increases.
Elements of same groups have same number of outer electrons or valence electrons. They show similarities in chemical and physical properties.
For example, lithium and sodium are in the first group. They both have one valence electron.
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What do you put in the cavity of an unstuffed turkey?
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hope this help
the diagram of paper chromatography
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I hope that the attachment helps you..
A student wants to perform an experiment to study the relationship between the temperature and pressure of an enclosed gas. In one or two sentences, describe two assumptions that must be made in performing this experiment.(2 points)
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An assumption that must be made when studying the relationship between pressure and temperature is that the gases do not interact with each other.
An experiment seeks to understand the effect of one variable on the other. The relationship between the pressure and temperature of a gas is commonly studied.
In an experiment to determine the relationship between temperature and pressure of a gas, the following assumptions must be made;
The gases molecules only occupy only a negligible volume compared to the total volume of the gas.The gas molecules do not interact with each other.Learn more: https://brainly.com/question/6111443
What are their name?
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Answer: Ch3 is Methlene Ch2 is Methyl Ch is Benzen
Explanation:
Hope this helps
What increases the concentration of H+ in water ?
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Answer:
Acid
Explanation:
Non-neutral pH readings result from dissolving acids or bases in water. An acid is a substance that increases the concentration of hydrogen ions (H+) in a solution, usually by having one of its hydrogen atoms dissociate.
which temperature scale avoids negative temperatures
Answers
Answer:
See below:
Explanation:
Hello! My name is Galaxy and I will be helping you today. I hope you are having a nice day.
There are 3 main ways to measure temperatures, you have Celsius, Fahrenheit, and Kelvins.
Celsius and Fahrenheit are main ways to measure heat in non-scientific terms, althought they are used sometimes when needed.
Kelvins are used for Science as they are precise and can deal with temperatures that are super hot or super cold.
The lowest temperature in Kelvins is 0 degrees Kelvin, also known as Absolute Zero. There are no temperatures above that. So the answer to your question would be Kelvins.
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it is the middle value of the set
Answers
Answer:
No, mode isnt the middle value of a set that is median.
Explanation:
Mode (also known as modal class) is the value that appears most frequently in a data set.
how many pairs of electrons are shared between two adjacent carbon atoms in a saturated hydrocarbon?
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It would be one pair of electrons.
I WILL MARK BRAINLY-EST Do you think the way we perceive food in our culture supports the guidelines in MyPlate? Explain your
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Answers
That car moves or accelerates faster which has the higher speed.
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The conclusion can be drawn when the image is present or any data but there is no data or image present which provides us accurate information so we can conclude logically that car which moves at higher speed will move faster than the other car.
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What’s a conjugative Bas of OH-
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Answer:
the answer is O²- hopefully
___is a measure of the change in velocity of a
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THIS IS URGENT ! Please fill in the blank
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if the student finds the weight of the sodium chloride to be 28.5g,calculate the number of particles.(Na=23,Cl=35.5)
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Answer:
2.93×10^23
Explanation:
molecular formula of NaCl is 58.5
58.5gof NaCl=6.023×10^23
28.5g of NaCl= 6.023×10^23÷58.5×28.5
= 2.93×10^23
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Answer:
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Explanation:
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pagmali sorry na Lang
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Explanation:
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Answer:
Neutron is the correct answer.