Answer:
The fundamental forces or interactions is a term used in physics that explains the Forces that present in nature in their most basic form and cannot be further reduced.
Explanation:
The force of gravitation and the subatomic forces present inside the atom also known as some nuclear reactions and electromagnetic reaction are certain examples of fundamental forces. all these forces are in their basic form of nature.
These all make four such forces while another fifth force is a hypothetical one and is believed to be in existence hypothetically by the scientists.
Are the changes from a to b and from b to c physical or chemical changes?
explain your answer
A = ice
B = water
C = steam
Answer:
They are physical changes.
Explanation:
This is because there in no chemical reaction taking place, just a physical change.
A physical change in a change in which the chemical structure of the substance does not change. Ice, water and steam are all the same on a molecular level, thus changing from ice to water or from water to steam are physical changes.
A chemical change is a change in which the chemical structure of the substance undergoes a change, since this does not happen going for A to B or B to C they are not chemical changes.
26.42m Significant figure
Answer:
4 sig figs
Explanation:
There are 4 because they are all # 1 or above.
0 has special rules on whether or not it is significant.
0 being between two other sig figs no matter how far apart makes it a sig fig.
example: 101 is 3 sig figs
0 that is at the end of a non decimal number are not significant.
example: 110 is 2 sig figs
0 that are after a decimal are significant as long as they after another sig fig.
example: 1.000 and .1000 are both 4 sig figs
extra examples:
110.01 is 5 sig figs
110.1 is 4 sig figs
.0001 is 1 sig figs
Solve using proper scientific notation: (use a ^ for the exponent) (1.26 x 104 kg) + (2.5 x 106 g) = ____________________ in kg ?
Answer:
3.9602 x 10^2
Explanation:
You would first multiply the two together, making sure to put it in correctly on your calculator. Then that would lead you to " 396.04".
Since scientific notation must be between 1-10 you would move the decimal two spots to the left to make it smaller, then keeping in mind that to get it back where it was you must multiply the 10 by a positive two to bring it back a positive two spots.
After converting to the same units, the sum of 1.26 x 10⁴ kg and 2.5 x 10⁶ g (converted to 2.5 x 10³ kg) is 1.51 x 10⁴ kg, when added using proper scientific notation.
To solve the given problem in scientific notation, we first need to convert all units to kilograms. We are given 1.26 x 10⁴ kg and 2.5 x 10⁶ g. Remember that there are 1000 grams in 1 kilogram, so we must divide the grams by 1000 to convert to kilograms. This means that 2.5 x 10⁶ g is equivalent to 2.5 x 10⁶ g x 10⁻³ kg/g = 2.5 x 10³ kg.
Now, both quantities are in kilograms, so we can add them together:
1.26 x 10⁴ kg + 2.5 x 10³ kg = (1.26 + 0.25) x 10⁴ kg = 1.51 x 10⁴ kg.
Thus, the sum in kilograms, using proper scientific notation, is 1.51 x 10⁴ kg.
eview Questions
1. Compare qualitative and quantitative physical properties. Use
examples of properties listed in Tables 4.2 and 4.3 as part of your
discussion
Answer:
Qualitative: Physical observations (the sky is blue, the water is boiling, etc.)
Quantitative: Numberical observations (density= 1 g/ml, volume= 14 ft^3, etc.)
Explanation:
The way to remember it is quaLitative is qualities of the object. QuaNtitative is quantities of the object.
Qualitative physical properties describe the quality of matter without numbers, such as color, while quantitative properties involve numbers and units, like a substance's melting point.
Qualitative and quantitative physical properties differ in the way they describe matter. Qualitative physical properties describe the quality of a substance without using numbers. For example, sulfur being yellow is a qualitative description. On the other hand, quantitative physical properties specify the quantity and include numerical values with units, such as a book having 650 pages.
To illustrate these differences, consider the physical property of color. Color is a qualitative property because it describes what we see without measurement. In contrast, melting point is a quantitative property because it provides a specific temperature at which a substance changes from a solid to a liquid, such as ice melting at 0°C.
Which physical properties do all stars have? Check all that apply. They are made of gases? They shine very bright? They have a spherical shape? They contain iron in their cores? They make energy through fusion? @nattyames snap
Answer:
All of the above
Explanation:
A star is a hot, giant, massive body that is located millions of miles away. These stars appears to be shiny because of its high temperature that glows producing light. They are comprised of gases such as hydrogen and helium, and they release a huge amount of energy when two hydrogen atoms undergoes fusion.
They generally look star shaped (circular type) from earth but they are somewhat spherical in shape due to their gravity that forces them to get bulge at its equator during its rotation around its own axis.
They have a core that contains iron in them and they progressively formed after the exhaustion of the hydrogen and helium fuel.
Hence, all the given options are correct.
Answer:
The answer is A, C, E for E2020 users. I just took the unit test review.
Explanation:
the experiment where the factors being tested are not applied. It allows scientists to set a baseline to compare the experimental groups that do have factors applied to them.
Test variable (independent variable):
Outcome variable (dependent variable):
Control group:
Answer:
An experiment is a research method performed within a completely controlled environment that uses groups of individuals ( subjects), one of which the factors being tested are not spplied on, an independent factor of the hypothesys ( to be tested ), for example the resilience of a group of teenagers) and a dependant factor that is applied to check how it varyes depending on the tested factor ( for example, the most challanging experience of their generation)
Suppose you have a scientific question you are interested in answering. What would you normally do before you make your hypothesis? A. Do some background research. B. Conduct a scientific experiment. C. Make predictions about your question. D. Design a procedure for your experiment.
Answer:
A. Do some background research
There are 5 steps for the scientific method while doing an experiment
Step 1: make a question
Step 2: research that question
Step 3: Hypothesis
Step 4: Test and collect data
Step 5: Conclusion
Answer:
aaaaaaaaaa
Explanation:
Both artists and scientists contribute to our understanding of the world around us. Identify the ways that art and science are similar. Check all that apply.
Both artists and scientists use their imagination to create things.
Both artists and scientists rely on others in their field for inspiration.
Both artists and scientists can modify their work whenever necessary.
Both artists and scientists use technological innovations to explore new possibilities.
answer are: a b and d on edunity
Answer:
The correct answer will be options-
1. Both artists and scientists use their imagination to create things.
2. Both artists and scientists rely on others in their field for inspiration.
3. Both artists and scientists use technological innovations to explore new possibilities.
Explanation:
The artist and scientist share many common features related to their philosophy and exploration.
Both artist and scientist acquire new ideas and talent by the previous work done by experts in their fields. They take inspiration from them to do new work.
An artist creates a new piece of work by imagination like a painter which is also used by the scientist to think new ideas in a scientific investigation like the theory of relativity was based on the logical imagination.
An artist and a scientist use the new technologies to advance their work in their respective fields and thus, the selected options are the correct answer.
Answer:
1.) Both artists and scientists use their imagination to create things.
2.)Both artists and scientists rely on others in their field for inspiration.
4.)Both artists and scientists use technological innovations to explore new possibilities.
Explanation:
Correct on edge 2021
What do all eukaryotic cell have in common?
Answer: Eukaryotic cells are very diverse in shape, form and function. Some internal and external features, however, are common to all. These include a plasma (cell) membrane, a nucleus, mitochondria, internal membrane bound organelles and a cytoskeleton.
Explanation: Both prokaryotic and eukaryotic cells have structures in common. All cells have a plasma membrane, ribosomes, cytoplasm, and DNA. The plasma membrane, or cell membrane, is the phospholipid layer that surrounds the cell and protects it from the outside environment.
All eukaryotic cells have various common characteristics and structures such as -nucleus and other membrane-bound compartments or organelles that help in giving all of them a specialized function.
A eukaryotic cell is a type of cell that contains the nucleus and other membrane-bound compartments or organelles that help in giving all of them a specialized function.
Eukaryotic cells are very diverse in shape, form, and function.Common structures to all eukaryotes are -a plasma (cell) membranea nucleusmitochondriainternal membrane-bound organelles such as ER, Golgi apparatus, vacuole, ribosomes, and a cytoskeletonDNA as genetic materialcytoplasmThus, All eukaryotic cells have various common characteristics and structures such as - nucleus and other membrane-bound compartments or organelles that help in giving all of them a specialized function.
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13. True or False: "Converting one form of energy into another form
always involves a loss of useable energy.
Plz help
Which statement is true about this reaction?
14N+H—>150
A-It is a practical source of energy on Earth.
B-It occurs only outside the solar system.
C-Its product is heavier than each of its reactants.
D-It shows the critical mass of an element
Answer:
C-Its product is heavier than each of its reactants.
Explanation:
Correct equation:
¹⁴₇N + ¹₁H → ¹⁵₈O
In the reaction above, we can conclude within the given conditions of the reaction that the product formed is heavier than the reactants.
The product is oxygen with a mass number of 15 as shown by the superscript preceeding the symbol of the atom.
The reactants are:
Nitrogen, N with a mass number of 14
Hydrogen, H with a mass number of 1
The mass number is a true reflection of the mass of an atom. It clearly shows the mass of the nucleons which are the most massive particles that makes up an atom. The nucleons are protons and neutrons that makes up the tiny nucleus of the atom.
Oxygen here has more nucleons that each of Nitrogen and Hydrogen.
Answer:
c
Explanation:
Can magnetism be used to identify a substance
Answer:
yes, ex: iron cobalt and nickel and elements like this are attracted to magnetism
Explanation:
Cecil is working with samples of chlorine (CI), oxygen (O), bromine (Br), and silver (Ag). The samples are all at room
temperature. Which substance is most likely the most dense?
chlorine
oxygen
bromine
silver
Answer:
silver
Explanation:
Silver is a metal at room temperature.
The physical state of matter can help us know which of these substances will be the most dense. Density deals the amount of substances per unit volume.
Solids are packed closely and have a definite and ordered arrangement of their atoms. From the list above only Silver is a solid at room temperature.
Bromine is a liquid at room temperature while chlorine and oxygen are gases at room temperature. Liquids and gases do not have more substances per unit volume compared to solids. Therefore, silver should be the most dense.
Answer:
The answer is silver. Silver is the most dense, it's a solid so it is more compact and is obviously the most likely to have more mass to it. option D
Explanation:
Use the periodic table to match each of the following element symbols to its name, atomic mass, or atomic number
Match
B) 78.971 u (atomic mass)
c) 16 (atomic number)
The matching of each of the following element symbols to its name, atomic mass, or atomic number can be done as;
Tin ; symbol(Sn) atomic number (50)., atomic mass of (118.710 )Selenium; Symbol( Se) Atomic Number (34) (Atomic Mass 78.96 atomic mass units)Sulfur ; symbol (S) ,atomic number (16). How can the matching be done?Sulfur is a chemical element with the atomic number 16 and the symbol S. Sulfur is a solid at ambient temperature and is categorized as a nonmetal.
Tin is a Group 14 (the carbon family) element with mostly metallic characteristics. Tin has an atomic mass of 118.710 atomic mass units and an atomic number of 50.
Tin is the element listed as Sn in the periodic table. Stanum is the latin name of the metal from which Sn is derived.
Se is a group 6 element and is selenium. It is a member of the same group as tellurium, oxygen, and sulfur. The atomic weight of this material is 78.96 g/mol.
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if you walk 2km from your house to a store then back home, what is your displacement
Answer:
If you walk 2km from your kouse to a store then back nome your displacement is 0km.
Explanation:
Displacement is defined as the distance from your original location. The displacement of the question is 0 because even though you left your house, you came back you your original position. Therefore you are 0km from your original position and have a displacement of 0km.
Your displacement in this case is Zero
How to find the displacementYour displacement is the shortest straight-line distance from your initial position to your final position, regardless of the path you took. In this case, you walked 2 km from your house to the store and then walked 2 km back home.
Since you ended up back at your starting point, your final position is the same as your initial position.
Therefore, your displacement is 0 km. Displacement takes into account only the change in position, not the path taken, and since you ended up where you started, there is no net change in position, resulting in a displacement of 0 km.
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ANSWER FIRST GET BRAINLY
This table shows situations that are affecting the Earth’s energy balance in certain areas.
Which situations would result in an increase in the Earth’s surface temperature in that area? Check all that apply.
A.1
B.2
C.3
D.4
E.5
Answer:
1 and 5 I'm pretty sure sorry if i'm wrong the rest look like it wouldn't make sense to me
Explanation:
Answer:
Hey! It's 1 and 5!
Explanation:
How many milliliter are in 0.063 L
Answer:
63 mL
Explanation:
To find the amount of mililiters in an amount of liters, we must multiply by the amount of liters by 1000.
0.063 L × 1000 = 63 mL
From the following list of elements, those that will always form ionic compounds in a 1:2 ratio with zinc.
Choose one or more:
O A. iodine
O B. nitrogen
O C. fluorine
OD.rubidium
O E, selenium
OF. bromine
O G. sodium
O H zirconium
OI manganese
Answer:
A. iodine
C. fluorine
F. bromine
Explanation:
Ionic bonds occur mostly between metals and non-metals. Usually, a wide electronegativity difference is preferred between the two atoms. This makes one atom more desirous to gain electron and other more willing to donate electrons.
To have Zn forming a compound in the ratio of 1 to 2, the combining power must be similar to this.
The dominant oxidation state of Zn is the is the +2 state.
The other combining atoms must have the ability to recieve the two electrons.
The halogens fit perfectly into this picture. They need just an electron to attain nobility. They are also highly electronegative. If two halogens combines with the Zn, then the ionic bond will result.
The halogens are fluorine,chlorine, bromine, iodine and astatine.
They will form these compounds:
ZnF₂, ZnBr₂ and ZnI₂
Final answer:
Iodine, fluorine, selenium, and bromine can form ionic compounds in a 1:2 ratio with zinc since zinc typically exhibits a 2+ charge and these non-metals form -1 anions.
Explanation:
The question asks which elements from a provided list will always form ionic compounds in a 1:2 ratio with zinc. Zinc, being a transition metal, commonly exhibits a 2+ charge in its compounds. For an ionic compound to form with zinc in a 1:2 ratio, the other element must form an anion with a 1- charge to balance the overall charge of the compound, as zinc donates two electrons (one for each anion). From the given options, the elements that will form anions with a 1- charge and hence can form ionic compounds in a 1:2 ratio with zinc (Zn) are: A. iodine (I), C. fluorine (F), E. selenium (Se), and F. bromine (Br). These non-metals typically form -1 anions, which matches the requirement for forming a 1:2 ratio compound with Zn2+. Therefore, the correct options are A. iodine, C. fluorine, E. selenium, and F. bromine.
Is this how you draw a punnet square???
Answer:
No
Explanation:
Two letters on the top, and two letters on the left. (one letter per square)
Answer:
No, it is not.
Explanation:
To draw a Punnett Square, it can only have 4 letters on 2 sides.
I added an image which is an example.
Triangle PQR has vertices at P(−6,−4) , Q(2,−10) , and R(8,0) . It is dilated about the origin by a scale factor of 5 to obtain triangle P′Q′R′ . What are the coordinates of the vertices of triangle P′Q′R′ ? Use the drop-down menus to choose the coordinates that make the statement true.
Answer:
P'(-30, -20), Q'(10, -50), R'(40, 0)
Explanation:
Multiply each coordinate by 5 to get your above answer.
I am joyous to assist you anytime.
The vertices of triangle PQR are dilated by a factor of 5 resulting in new vertices P′(-30,-20), Q′(10,-50), and R′(40,0).
Explanation:The given task is about a geometric transformation called dilation. In the game of dilation, each point moves closer to or further from the origin (0, 0) based on the scale factor. Here, the given triangle is dilated by a scale factor of 5. So, each coordinate of the triangle would be multiplied by that factor.
Let's calculate:
For point P(-6,-4), after dilation, it would be P'(-6*5, -4*5) => P'(-30, -20) For point Q(2, -10), it will transform into Q'(2*5, -10*5) => Q'(10, -50) For point R(8, 0), new coordinates will be R'(8*5, 0*5) => R'(40, 0)
Therefore, the coordinates of the vertices of triangle P′Q′R′ after dilation will be P′(-30,-20), Q′(10,-50), and R′(40,0).
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What is the name of the compound CoS
Answer:
Cobalt sulfide
Explanation:
Cobalt sulfide
The name of the compound CoS is Cobalt Sulfide. It consists of one atom of Cobalt (Co) and one atom of Sulfur (S). The name follows standard chemical naming conventions.
Explanation:The compound CoS refers to a molecule composed of one atom of cobalt (Co) and one atom of sulfur (S). In the naming conventions of chemical compounds, the first element usually retains its standard name, while the second element has its ending changed to '-ide'. Thus, the name of the compound CoS would be 'cobalt sulfide.' It's important to note here that the prefix 'mono-' that is used to denote single atoms is usually omitted, hence we don't say 'monocobalt monosulfide'. To ensure the correctness of the names, strict rules are followed in Chemistry to avoid ambiguity.
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how many electrons are in 1.39e23 atoms of carbon 13?
Answer:
8.34e23 electrons
Explanation:
One atom o 13C has 6 electrons, 6 protons, and 7 neutrons
so 1.39e23 13C atoms will have 1.39e23 x 6 = 8.34e23
Each Carbon-13 atom has exactly 6 electrons. So, 1.39e23 atoms of Carbon-13 would contain a total of 8.34e23 electrons.
Explanation:To figure out the number of electrons in 1.39e23 atoms of Carbon-13, you need to understand that each atom of carbon-13 contains exactly 6 electrons (as its atomic number is 6). The total number of electrons is simply the number of atoms multiplied by the number of electrons per atom. Hence, the total number of electrons is 1.39e23 * 6 = 8.34e23 electrons.
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How many kg are in 10 pounds
Answer:4.536 kilograms
Explanation:
for an approximate result, divide the mass value by 2.205
Which of the following has the longest wavelength?
A.violet
B.ultraviolet radiation
C.red
D.infrared radiation
Answer:
Infrared radiation
Explanation:
The elecromagnetic spectrum is a group of waves that results from electromagnetic vibrations.
In the spectrum, the frequency of the waves increases as their wavelengths decreases. The spectrum is shown below:
Radio waves Microwaves Infrared Visible light Ultraviolet Xrays
Answer:
agree
Explanation:
Which of the following is a property of an acid
Answer:
fating on acid and bases will give u the property of paper blue litmus and they tase sour and they typically contain an =oh group with slippery stuff and a propety of acids
Explanation:
Acids are substances that release hydrogen ions in solution, participate in chemical reactions, and are classified by how many protons per molecule they can give up in a reaction. Acid strength varies, with strong acids ionizing completely in solution and weak acids partially ionizing.
Explanation:An acid is a type of substance with specific properties. First, an acid is a substance that releases hydrogen ions (H*) in solution. This release of ions means that a positively charged hydrogen ion is just a proton and this proton is likely to engage in chemical reactions. Acids are also classified by the number of protons per molecule they can give up in a reaction, with monoprotic acids like HCl containing one ionizable hydrogen atom.
Another property of acids is that their strength varies. Strong acids, like hydrochloric acid, ionize completely and release all their hydrogen ions in the solution, while weaker acids like vinegar or acetic acid do not ionize completely, leaving some of their hydrogen ions still bonded within the compound in the solution. Therefore, the stronger the acid, the more readily it donates its H*.
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“A mixture is the chemical bonding of two or more substances in any proportion.” Is this statement true or false? Explain your answer.
Answer:
False
Explanation:
''A mixture is the chemical bonding of two or more substances in any proportion'' is false statement because a mixture don't include bonding of chemical substances.
Mixtures in chemistry are including blending of substances and we have two tipes of mixture:
HeterogeneousHomogeneousSome of the chemical mixtures are: mixture of water and sand, mixture of sand and iron filings and more...
If we are talking about bonding in chemistry there are Covalent bonds and Ionic bonds.
Answer:
The statement is False.
Explanation:
A mixture contains two or more elements present in it.
The elements are not in chemical combination with each other.
A compound too contains two or more elements but they are in chemical combination.
For example NaCl is a compound which contains 1 part of Sodium and 1 part of Chlorine.
[tex]H_2 O[/tex] is a compound 2g of hydrogen is chemically combined with 16g of Oxygen.
Chemical bonding is the attractive forces which holds the atoms together in a molecule.
NaCl - the attractive force is called as Ionic bond.
[tex]H_2 O[/tex] - the bond present is a covalent bond
A mixture has two or more elements but there is no chemical bonding present in it. The components of a mixture can be easily separated from it.
Archeologist discovered a silver crown in an ancient tomb and sent it for analysis. You placed the crown in a tub of water and found it displaces 238.1 ml of water. If the mass of the crown is 2.50kg did the archeologist find a crown of Real silver? How can u be sure?
Answer:
Explanation:
The density of pure lead is 10.49g/cm³
Given parameters:
Volume of water displaced by the crown = 238.1ml
Mass of crown = 2.50kg
Solution
We would simply find the density of the discovered crown and compare with that of the standardized density of lead.
Density is an intensive property of matter and it is the same for any form of matter. It is amount of substance per unit volume:
Density = [tex]\frac{mass}{volume}[/tex]
We need to convert the given parameters to standard unit,
1ml = 1cm³
Therefore, the volume of water displaced is 238.1cm³
Also,
1kg = 1000g
2.5kg = 2500g
mass of the crown is 2500g
Density = [tex]\frac{2500}{238.1}[/tex] = 10.49g/cm³
The crown is made of silver because the density matches with that of pure silver.
7) Find the mass of 250.0 mL of benzene. The density of benzene is 0.8765 g/mL.
Answer:
219.125 kg.
Explanation:
Density: This can be defined as the ratio of mass of a body to the nolume of the body.
The Formula of density is given as,
D = m/v ................... Equation 1
Where D = Density of benzene, m = mass of benzene, v = volume of benzene.
Make m the subject of the equation
m = Dv ................. Equation 2
Given: D = 0.8765 g/mL, v = 250 mL.
Substitute into equation 2
m = 0.8765×250
m = 219.125 kg.
Hence the mass of benzene = 219.125 kg.
The mass of 250.0 mL of benzene is 219.125 grams if the density of benzene is 0.8765 g/mL.
Density is a physical property of a substance that describes how much mass is contained in a given volume. It is calculated by dividing the mass of an object or substance by its volume. The formula for density is:
Density = Mass / Volume
The units of density depend on the units of mass and volume used in the calculation. Common units of density include grams per milliliter (g/mL) for liquids and solids, and grams per cubic centimeter (g/cm³) for solids.
Density is often used to characterize and compare the properties of different materials and substances.
Given:
Volume of benzene = 250.0 mL
Density of benzene = 0.8765 g/mL
Mass = 250.0 mL × 0.8765 g/mL
Mass = 219.125 g
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The distance from Santa Maria to Los Alamos is 16.25 mi. what is the distance in meters?
I need to solve this using dimensional analysis. My conversion factors are: 0.621 mi=1.00 km and 1 km = 1000 m
please help!
Answer:
26,167.47m
Explanation:
Problem:
We are to solve this problem using dimensional analysis:
from the given conversion factors-
0.621mi = 1.00km
1km = 1000m
From the problem, we are groing from miles to metres:
16.25mi x [tex]\frac{1km}{0.621mi}[/tex] x [tex]\frac{1000m}{1km}[/tex]
The mi will cancel out and also the km. This leaves us with the desired unit we want which is meters, m.
= 26,167.47m
Which of the following is not used to hold liquids?
a.
flask
b.
graduated cylinder
c.
balance
d.
test tube
Please select the best answer from the choices provided
A
B
C
D
Among the given options, balance is an object which is not utilized in order to hold liquids. Thus, the correct option for this question is C.
What are the characteristic properties of liquids?The characteristic properties of liquids are as follows:
Liquid has a definite volume but does not possess a fixed shape. Liquids can be compressed with the help of large pressure.This state of matter has less density as compared to solids.The intermolecular forces of attraction are weaker as compared to solids.They possess considerable space between particles.Objects like flasks, graduated cylinders, and test tubes hold liquid on the basis of their intensity. While balance is an instrument that is used to measure the weight or mass of compounds or substances which is present in solid forms.
Therefore, balance is an object which is not utilized in order to hold liquids. Thus, the correct option for this question is C.
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