Answers
Answer:
Some of the most incredible discoveries in science were made because the data looked wrong! Once you have the data, you may need to perform a mathematical analysis to support or refute your hypothesis. Conclusion Conclude whether to accept or reject your hypothesis. There is no right or wrong outcome to an experiment, so either result is fine.
Related Questions
15. An electrically neutral atom consists of 15 neutrons, 13 electrons, and a number of protons. What is its mass number?
Answers
Answer:
28
Explanation:
it states that the atom is neutral, meaning the number of electrons and protons are the same. so if there are 13 electrons, there are 13 protons. And the mass number is neutrons plus protons. So 13+15 is 28
For an atom to be electrically neutral, the number of protons must be equal to the number of electrons to cancel out the charge exerted by the electrons.
Therefore, if the atom has 13 electrons, then the atom also has 13 protons. In other words, the atom has an atomic number of 13.
The mass number of an atom is the sum of the number if the atomic number or number of protons and the number of neutrons. Therefore, it’s mass number is 13+15=28.
Which is the larger? 27 kilograms or 270 grams?
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Answer: 27 killograms
Explanation: 1kg = 1000 grams
27 kilograms =27000 grams
2. Is it true thatOnly the stratosphere contains enough air for living things to breathe?
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Answer:
I'm pretty sure that's false.
Explanation:
Does more data mean more reliable results or less
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Answer:
more reliable. The more results the better results you get.
Explanation:
Answer:
more reliable results
Explanation:
hey there,
< More data is more reliable results as you can see even more about the experiment you are doing! If you only know one other scientist that had done the experiment and it worked for him, then that's not enough data, but if you have thousands of scientists that were able to do the experiment correctly, you will have a more reliable and correct result since now you have more data. >
Hope this helped! Feel free to ask anything else.
A) accelerated upward. B) slowed and then stopped. C) moved at a constant velocity. D) increased its speed rapidly.
Answers
Answer:
A because the line is showing accelerated upward.
Explanation:
PLEASE HELP !!! Read the passage below and use it to answer the question. Rainforests have four basic layers. The tallest trees are part of the emergent layer, which can be as much as 60 m above the ground. The sunlight is bright and hot here, and the wind can be strong. The main layer of the rainforest is the canopy, more than 20 m above the ground. It is made up of the leaves and branches of tree tops. The air here is still and very moist. The canopy blocks out most of the sunlight. Smaller trees, vines, and other plants make up the understory, which is less than 12 m above the ground. This layer is damp and warm with very little sunlight. The forest floor is dark, warm, and moist. Decomposers break up fallen leaves and other dead matter here. Which of the following graphs best presents one of the abiotic factors of a rainforest?
Answers
Answer:
Read the back of glossary
Explanation:
Read pages
Answer:
hi A
Explanation:
i need the points please
When sugar is dissolved in water and mixed well the resulting solution is classified as a
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Answer:
homogeneous mixture
Explanation:
A substance melting on the stove
is an example of a chemical
change
True
b. Flase
a.
Answers
Answer:
A. True hope this helped
Calculate 1.23 m x 0.89 m and give your answer with the correct number of significant figures?
Answers
Answer:
1.1m that what I got and it said it was right
The calculation of the given figure to one significant figure is[tex]1.1 m^{2}[/tex]
Significant figures can be regarded as a number of digits that is present in a particular value.Given 1.23 mAnd 0.89 m
If we multiply we have[tex]( 1.23*0.89) = 1.0947[/tex]
Since, there is no definite significant figure given, I will assume one significant figure.To do this we start to count significant figures starting from first non-zero digit to the actual figure we are requested to stop.We can see that 9 is after zero, the we round off that 9 then it will become 1 , Then the value to one significant figure is [tex]1.1m^{2}[/tex]Therefore, the multiplication of the values to one significant figure is [tex]1.1^{2}[/tex]
Learn more at:https://brainly.com/question/13386983?referrer=searchResults
To practice for an Ironman competition, John rode his bike for 15 kilometers. How many
meters did he ride?
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Answer:
15000
Explanation:
1000 Meters in a kilo meter. So multiply 15 by a 1000.
The answer choices are
-solid
-liquid
-gas
Answers
Answer:
solid, gas
Explanation:
gasses are very low density because there is a low mass in a large volume with lots of space between atoms, solids on the other hand are very densely packed and there is very little room between atoms
Joshua uses his thermometer (experimental value) and finds the boiling point of ethyl alcohol to be 75°C 75 ° C . The accepted value of ethyl alcohol is 80°C 80 ° C . What is his percent error?
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75-80 = 5 = .0625 X 100 = 6.25%
80 80
carry out this problem 2.4g/mlx15.82ml
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Answer:
Explanation:
i dont really know
WILL GIVE BRAINLETS
What is the landform in the image? A.Dune B.Hill C.Plateau D.River
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Answer:
the answer is c
Explanation: bc it can't be a hill or a river and a dune no way so it is c a PLATEAU
hope this helped have a great day
There is no water to be a river landform and no hills to be a hillbilly platform
DNA is a double stranded molecule. If one strand is ATCGATCGATCG, what is the sequence of the other strand?
Answers
Write a brief paragraph that shows that you understand the following terms and relationships between them: atom, well I kill compound, and element.
Answers
Answer:
Atom are smaller particles of an element
compounds are mixture of two element
Element are combination of compounds
Explanation:
When an element is breakdown into smaller particles it becomes an atom
Which phrase is the best definition of science?
Answers
Answer:
Science is the information gathered through study.
Explanation:
Answer:Observation of the physical world.
Explanation:
How many grams of carbon (C) would be present in carbon monoxide (CO) that contains 2.666 grams of oxygen (O)?
Answers
Atomic mass of O=16
2,666x12/16=1,9995
Hope that is right
Answer:
Explanation:
Given :
Mass of oxygen containing carbon monoxide (CO) is 2.666 gram .
To Find :
How many grams of carbon (C) would be present in carbon monoxide (CO) that contains 2.666 grams of oxygen (O) .
Solution :
By law of constant composition , a given chemical compound always contains its component elements in fixed ratio (by mass) and does not depend on its source and method of preparation.
So , volume of solution does not matter .
Moles of oxygen ,
Now , molecule of CO contains 1 mole of C .
So , moles of C is also 0.167 mole .
Mass of carbon ,
Therefore , mass of carbon is 2 grams .
Hence , this is the required solution .
Choose all the answers that apply. What do all cells do? reproduce contain hereditary information have a nucleus break down food into energy have a cell membrane
Answers
Answer:
contain hereditary information
break down food into energy
Explanation:
Hereditary information is contained in genes and genes are found inside the cell. This implies that the cell contains hereditary information of organisms. This hereditary information is passed on during cell division from parent to daughter cells.
Metabolism occurs in the cells. The cells use oxygen to break down food materials to produce energy.
What occurs when a solid substance dissolves into a liquid? 1 It stays solid and sinks to the bottom of the liquid substance. 2 It breaks down and becomes part of the liquid substance. 3 It stays solid and floats on the top of the liquid substance. 4 It changes the liquid substance into a solid substance.
Answers
Explanation:
When a solid substance is dissolved in a liquid such as water, the intermolecular forces of attraction between the molecules in the solid substance are overcome and they exist as ions in the solution. Hence the answer is 2.
The correct option is 2.
When a solid substance is dissolved in a liquid such as water, the intermolecular forces of attraction between the molecules in the solid substance are overcome and they exist as ions in the solution.
What is dissolution?Dissolution is the process in which a substance forms a solution. Dissolution testing measures the extent and rate of solution formation from a dosage form, such as a tablet, capsule, ointment, etc. The dissolution of a drug is important for its bioavailability and therapeutic effectiveness.
What is an example of a dissolution?Stirring sugar into water is an example of dissolving. The sugar is the solute, while the water is the solvent. Dissolving salt in water is an example of the dissolution of an ionic compound.
Learn more about dissolution here https://brainly.com/question/4529762
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Complete the following calculation. Round off the answers to the correct
number of significant figures.
2.30 m x 3.65 m x 0.55 m
Plz help thank you!
Answers
Answer:
uhh can ya specify plezz
Explanation:
A gas has a volume of 150 cm3. Convert this volume into mL
Answers
Answer:
The answer is
150 mLExplanation:
To convert the volume from cm³ to mL we use the conversion
1 cm³ = 1 mL
So from the question
if 1 cm³ = 1 mL
Then 150 cm³ = 150 mL
Hope this helps you
A 42.0g sample of compound containing only C and H was analyzed. The results showed that the sample contained 36.0g of C and 6.0g of H.
Which of the following questions about the compound can be answered using the results of the analysis? (choose 1 option)
A) What was the volume of the sample?
B) What is the molar mass of the compound?
C) What is the chemical stability of the compound?
D) What is the empirical formula of the compound?
Answers
Answer:
D) what is the empirical.formular of the compond
Explanation:
this is because we have two elements and to calculate the empiral formula we need to have their masses which is also given
If the pressure, volume, and the number of moles of a gas are known, which is needed to calculate the universal gas
constant from the ideal gas laul?
O the temperature of the gas
the molar volume of the gas
the molar mass of the gas
the partial pressure of the gas
Answers
Explanation:
temperature of the gas
A class is 47 min how many seconds is this ?
Answers
Answer: 2820 seconds
1 minute = 60 seconds
Multiply the value times 60
47×60=2820
Which chemistry is used to create energy? *
Nuclear Chemistry
Organic Chemistry
Analytical Chemistry
Biochemistry
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Answer:
*biochemistry* is the answer
Answer:
No the real answer is nuclear chemistry
Explanation:
Which of the following is not a possible effect of increasing carbon dioxide levels in the atmosphere?a.increase in water contamination and floodsb.ocean acidificationc.cutting down forestsd.reduction of cold-related deaths Please select the best answer from the choices providedABCD
Answers
Answer:
b
Explanation:
The only option that is not an effect of increasing carbon dioxide levels in the atmosphere is cutting down forests.
An increasing level of carbon dioxide in the atmosphere causes ocean acidification due to the dissolution of the gas in the oceans. Carbon dioxide also causes global warming - an increase in the average global temperature due to the heat (from the sun) absorbing ability of the gas.
Global warming causes an increase in the level of seas and oceans as a result of the melting of glaciers and polar ice caps. The rise in sea levels causes flooding with associated loss of habitats and biodiversity.
The increase in global temperature also means that cold-related deaths will reduce.
Correct option: b
Answer:
C. cutting down forests
Explanation:
edge test
matter that has a uniform and defined composition is called a
Answers
i'll GIVE BRAINLY
5. Label the following measurement by the quantity it represents: 37 s * A. Density B. Time C. Temperature D. Distance
Answers
Answer:
Hey there!
35 s represents time.
The s means "seconds."
Let me know if this helps :)
Isaac Newton believed that light was made of
O waves.
O particles.
O dust.
O gravity.
Answers
Explanation:
particles
Answer: particle
Explanation:
The light make small particle of wave