Answer:
The answer is 9.0 kg/LExplanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\ [/tex]
From the question
mass = 1.8 kg
volume = 0.2 L
We have
[tex]density = \frac{1.8}{0.2} \\ [/tex]
We have the final answer as
9.0 kg/LHope this helps you
Answer:
knkjhhg
Explanation:
The following are examples of physical properties EXCEPT
Group of answer choices
reaction with oxygen
magnetism
electrical conductivity
boiling point
Answer:
color (intensive)
density (intensive)
volume (extensive)
mass (extensive)
boiling point (intensive): the temperature at which a substance boils.
melting point (intensive): the temperature at which a substance melts.
5. Explain how atoms and elements differ from one
another.
Answer:
A particular atom will have the same number of protons and electrons and most atoms have at least as many neutrons as protons. An element is a substance that is made entirely from one type of atom. For example, the element hydrogen is made from atoms containing just one proton and one electron.
Explanation:
How much does a proton weigh
Answer:
9.11 x 10 -28 grams
Explanation:
Chose all of the correct statements pure vs mixture
Answer:
I think that a pure substance is a form of matter that has a constant composition and properties that are constant throughout the sample. Mixtures are physical combinations of two or more elements and/or compounds.
Explanation:
What happens to an atom if it loses an electron?
Answer:
When an atom loses electron(s) it will lose some of its negative charge and so becomes positively charged. A positive ion is formed where an atom has more protons than electrons. In the opposite case when an atom gains electron(s) it becomes negatively charged (more electrons than protons).
Explanation:
Which best describes a chemical reaction that follows the law of conservation of matter?
Group of answer choices
A. The reactants have the same mass as the products.
B. The reactants have the same density as the products.
C. The products conserve all chemical properties of the reactants.
D. The products conserve all physical properties of the reactants.
Which measurement has the greatest number of significant figures?
a
60.6 mg
b
60,600 mg
c
6.060 mg
d
606 mg
Answer:
Option B = 60,600 mg (correct option)
Explanation:
First of all we will have an idea which numbers are consider as significant.
1 = All non-zero digits are consider significant figures like 1, 2, 3, 4, 5, 6, 7, 8, 9.
2= Leading zeros are not consider as a significant figures. e.g. 0.02 in this number only one significant figure present which is 2.
3= Zero between the non zero digits are consider significant like 105 consist of three significant figures.
4= The zeros at the right side e.g 3400 are also significant. There are four significant figures are present.
In given options, Option A 60.6 mg have 3 significant figures.
Option B have 5 significant figures.
Option C have 4 significant figures.
Option D have 3 significant figures.
Thus option b is correct option which have more significant figures.
This process of heat transfer by conduction would NOT work __________
A) in space.
B) in a solid.
C) under water.
D) in the atmosphere.
Science
Answer:
B and C are the correct answers.
How do the scientists Mendeleev and Moseley differ on their arrangement for the periodic table? A) Their periodic table was arranged the same. B) Moseley arranged the elements based on atomic masses while Mendeleev arranged the elements based on atomic number. C) Moseley arranged the elements based on atomic numbers while Mendeleev arranged the elements based on atomic masses. D) Moseley arranged the elements based on the number of protons while Mendeleev arranged the elements based on x-ray frequency.
Answer:
C is correct
Explanation:
the person above me is also correct hope this helps
The key difference between Dmitri Mendeleev and Henry Moseley's periodic table arrangements lies in the fundamental basis of their organization: C) Moseley arranged the elements based on atomic numbers while Mendeleev arranged the elements based on atomic masses.
Dmitri Mendeleev (1869): Mendeleev's periodic table was the first successful attempt at organizing the elements. He arranged the elements in order of increasing atomic masses and grouped them based on their chemical properties. Mendeleev's periodic table also left gaps for elements that were yet to be discovered, predicting their properties based on the trends of the known elements.
Henry Moseley (1913): Moseley's contribution to the periodic table was the realization that the atomic number (number of protons in the nucleus of an atom) was a more fundamental property than atomic mass. Moseley proposed that the periodic table should be arranged based on increasing atomic numbers rather than atomic masses. This arrangement resulted in a more accurate and systematic organization of the elements.
Learn more about atomic masses from the link given below.
https://brainly.com/question/29117302
#SPJ6
Convert 645 Newtons per quart to tons per liter. (The picture is a conversion table for help)
Answer:
0.067 ton/Litre.
Explanation:
645 Newtons per quart to tons per liter.
We'll begin by converting 645 Newton/quart to gram/quart (g/q). This can be obtained as:
1 N/q = 100 g/q
Therefore,
645 N/q = 645 N/q × 100 g/q / 1 N/q
645 N/q = 64500 g/q
Therefore, 645 Newton/quart is equivalent to 64500 grams per quart.
Next, we shall convert 64500 grams per quart to pounds per quart. This can be obtained as follow:
454 g/q = 1 pound/q
Therefore,
64500 g/q = 64500 g/q × 1 p/q / 454 g/p
64500 gram/quart = 142.07 pound/quart
Therefore, 64500 gram/quart is equivalent to 142.07 pound/quart.
Next, we shall convert 142.07 pound/quart to ton/quart. This can be obtained as follow:
2000 p/q = 1 ton/q
Therefore,
142.07 p/q = 142.07 pq × 1 ton/q / 2000 p/q
142.07 pound/quart = 0.071 ton/quart
Therefore, 142.07 pound/quart is equivalent to 0.071 ton/quart.
Finally, we shall convert 0.071 ton/quart to ton/litre. This can be obtained as follow:
1 ton/q = 1/1.06 ton/L
Therefore,
0.071 ton/q = 0.071 ton/q × 1/1.06 ton/L / 1 ton/q
0.071 ton/quart = 0.067 ton/Litre
Therefore, 0.071 ton/quart is 0.067 ton/Litre.
From the above illustration, 645 Newton/quart is equivalent to 0.067 ton/Litre.
A bond between a nonmetal and a nonmetal is called a(n)
bond.
A. hydrogen
B. metallic
C. covalent
D. ionic
Answer:
answer: B
Explanation:
becaucse it is B
A bond between a nonmetal and a nonmetal is called a covalent bond. The correct answer is option C.
Covalent bonding occurs when two nonmetal atoms share one or more pairs of electrons in order to achieve a stable electron configuration.
This type of bond is characterized by the sharing of electrons between the atoms, rather than the transfer of electrons as in ionic bonding.
An example of a covalent bond between two nonmetals: The bond between two oxygen atoms in an [tex]\rm O_2[/tex] molecule. In this molecule, the two oxygen atoms share two pairs of electrons to form a stable covalent bond.
Therefore, option C. Covalent bond is a bond between a nonmetal and a nonmetal.
Learn more about covalent bond here:
https://brainly.com/question/19382448
#SPJ6
What are the three main technical support options for Microsoft users? Find It Myself, Ask the Community, Get Live Help Communities, Find It Myself, Guide Me Fix a Problem, Find It Myself, Communities Ask the Community, Get Live Help, Fix a Problem
Answer:
Find It Myself, Ask the Community, Get Live Help
Explanation:
The three main options for Microsoft users are Find It Myself, Ask the Community, Get Live Help. The first of which is finding it yourself through the search menu or help guidelines provided by Microsoft in all of their operating systems. Secondly, would be asking the community through search engines such as Google or through Microsoft help forums. Lastly, would be getting live help since Microsoft opertaing systems have a remote desktop feature that allows you to connect to another IT professional from a distance, or you can simply contact an IT professional to visit you in person for technical assistance.
Based on these footprints, you decide that the organism started to run.
Your idea is known as what? *
What are the characteristics of an experiment? What are key parts of an experiment?
Answer:
independent variable - the thing you change
dependent variable - the thing you measure
control variables - the things you keep the same
find the atomicity of water
Answer:
atomicity of water is 3
Explanation:
Answer:
please mark brainliest!
Explanation:
one molecule of water contains two atoms of hydrogen and one atom of oxygen, the atomicity of water is three.
How many protons, neutrons, and electrons does the atom above have?
-12 protons, 7 neutrons, 1 electron
-7 protons, 12 neutrons, 1 electron
-12 protons, 5 neutrons, 7 electrons
-7 protons, 5 neutrons, 8 electrons
-7 protons, 5 neutrons, 1 electron
-7 protons, 12 neutrons, 8 electrons
-5 protons, 7 neutrons, 8 electrons
Answer:
Nitrogen has 7 protons, 7 neutrons, and 7 electrons.
So, I'm not entirely sure about the choices you provided :)
help me, please, i need it
Answer:
I think the answer would be C.
Explanation:
Microwaves emit radiation onto the leftover food, meaning the heat transfers to it through radiation.
if you toward the right of the periodic table is it harder or easier to remove valence electrons?
Answer:
harder
Explanation:
Answer:
The increased distance weakens the nuclear attraction to the outer-most electron, and is easier to remove
Explanation:
what is the population of the study
Answer:
The study population is the subset of the target population available for study (e.g. schizophrenics in the researcher's town). The study sample is the sample chosen from the study population.
Explanation:
In research terminology the Population can be explain as a comprehensive group of individuals, institutions, objects and so forth with have a common characteristics that are the interest of a researcher. Any value which is identified or measured from the characteristics of entire population can be called as Parameter.
Please HELP HELP ME!!!
Osmosis is the movement of molecules across a cell membrane. Why does this help
maintain homeostasis?
Explanation:
Osmosis helps maintain homeostasis by maintaining concentration of solvents and solutes constant inside cells.
Imagine that you're writing a paper on the topic of ocean acidification. Find two articles about ocean acidification on the Internet that you could use in your research. Name them Source 1 and Source 2, and include a link to each source. Be sure to also include the name of the website or organization that published the source.
Answer:
See explanation
Explanation:
When you are writing a scholarly paper, you have to conduct a thorough search for source materials online. These sources must be reliable, credible and contain verifiable information. In a project such as writing a paper on the topic 'ocean acidification', the following materials are relevant;
Source 1) 'Functional impacts of ocean acidification in an ecologically critical foundation species,'; Brian Gaylord, Tessa M. Hill, Eric Sanford, Elizabeth A. Lenz, Lisa A. Jacobs, Kirk N. Sato, Ann D. Russell, Annaliese Hettinger; Journal of Experimental Biology 2011 214: 2586-2594; doi: 10.1242/jeb.055939
Source 2) 'Impacts of ocean acidification on marine fauna and ecosystem processes'; Fabry, V. J., Seibel, B. A., Feely, R. A., and Orr, J. C. ; ICES Journal of Marine Science, 65: 414–432; doi: 10.1093/icesjms/fsn048
How is data not actually obtained from the experiment represented in a line graph?
•with a double line
•with a colored line
•with a broken line
•with only dots
Answer:
with a double line
Predict the effect of a mutation which limits the production of pigment in hair
Answer:
E
Explanation:
Predict the effect of a mutation which limits the production of pigment in hair
The animal would have white hair or hair with no color.
The animal would have light brown hair.
The animal would have black hair.
The animal would have no hair at all.
The animal would have white hair or hair with no color is the effect of a mutation which limits the production of pigment in hair.
Mutation is the change in the genetic composition of the gene or genetic material which alters the normal functioning of the gene or the genetic material. In the given situation if the mutation occurs at the gene which is responsible for the production of protein pigment responsible for imparting color to the hair. Then it is expected that the gene does not encode for a protein pigment as a result the hair will remain without color or white.Hence, the animal would have white hair or hair with no color is the correct option.
Learn more about mutation:
https://brainly.com/question/3523174
a suspension is said to be. unstable why. old fast I will mark brainly
Answer with Explanation:
A "suspension" is said to be unstable because some of its particles settle at the bottom when it is left for some time. One example of this is the "antibiotic suspension." If you might have noticed, the particles settle at the bottom and this is the reason why it is important to shake the medicine before giving it to patients. Another point to consider is the fact that the suspension has a residue when you try to filter out the particles. This means the solute can be separated from the solvent; thus, it cannot be distributed uniformly. So, this makes it unstable.
Which substance is a strong electrolyte?
O NH3
O Ba(OH)2
O C12H22011
O CH3COOH
Answer:
Ba(OH)2 is a strong base, so it conducts electricity well
Explanation:
The dissociation of a strong electrolyte is apparent by its reaction arrow, which only points toward products. In contrast, the reaction arrow of weak electrolytes points in both directions. The general form of the strong electrolyte equation is: Strong acids, strong bases, and ionic salts that are not weak acids or bases are strong electrolytes.
X NH3 is a weak base
X C12H22011 is neutral (not an acid or a base), therefore it a nonelectrolyte
X CH3COOH is a weak acid and it also dissociates partially.
The substance which is a strong electrolyte is Ba(OH)₂.
Hence Option (B) is correct answer.
What is Strong electrolyte ?Strong electrolyte can be defined as the substance that completely dissociates in to ions.
Strong electrolyte (aq) → cation⁺ (aq) + anion⁻ (aq)
Now lets check all options one by one
Option (A): NH₃
NH₃ is a weak base. NH₃ does not completely ionize so it is a weak electrolyte.
Hence it is incorrect option.
Option (B): Ba(OH)₂
Ba(OH)₂ is a strong electrolyte because it dissociates completely in water.
Ba(OH)₂ (aq) → Ba⁺² (aq) + 2OH⁻ (aq)
Hence, it is correct option.
Option (C): C₁₂H₂₂O₁₁
C₁₂H₂₂O₁₁ is a non electrolyte that means it does not dissociate into ions.
Hence, it is incorrect option.
Option (D): CH₃COOH
CH₃COOH is a weak electrolyte due to the presence of lowest number of ions it does not dissociate. It's ionization is very less.
Hence, it is incorrect option.
Thus, from the above conclusion we can say that The substance which is a strong electrolyte is Ba(OH)₂.
Hence Option (B) is correct answer.
Learn more about the Strong electrolyte here: https://brainly.com/question/2285692
#SPJ2
Recall all the models you described in task 1. Think about the results each model would predict for Rutherford's experiment. Which atomic models does Rutherford's experimental evidence support? Explain why these models are compatible with the experimental results.
The question is incomplete; the complete question is:
Recall all the atomic models you described in task 1. think about the results...
Recall all the atomic models you described in task 1. think about the results each model would predict for rutherford’s gold foil experiment. which atomic models does rutherford’s experimental evidence support? explain why these models are compatible with the experimental results.
the models in task 1 were dalton's, thomson's, rutherford's, and bohr's.
Answer:
Bohr's
Explanation:
Rutherford's theory laid the foundation upon which Bohr's model is founded. Rutherford established the fact that at the center of the atom, there is a nucleus whose radius is smaller than the radius of the atom. This nucleus is positively charged and most of the mass of the atom is concentrated there. Electrons move round this nucleus in orbits.
The experimental evidences of the Bohr's model shows that Rutherford's model was fundamentally correct. However, Bohr's model introduced the idea of quantization of the energy of electrons in an atom. The model went further to explain the spectra lines of the hydrogen atom.
an isotope or barium (atomic number 56)has an mass of 138.how many neutrons are in the nucleus of this isotope
Answer:
Diagram of the nuclear composition and electron configuration of an atom of barium-138 (atomic number: 56), the most common isotope of this element. The nucleus consists of 56 protons (red) and 82 neutrons (blue).
5. How can you use the periodic table to help predict the types of bonds elements will form?
will someone help me, marked as brainiest
Answer:
C
Explanation:
Answer:
c.metal
Explanation: metal is able to carry heat
