Correct answer=
gold is an element, it has a symbol of An
Hope it helped
Gold is an element, not a compound or a mixture. It is represented on the periodic table by the symbol Au and cannot be broken down into a simpler substance.
Explanation:Gold is an element, not a compound or a mixture. It's one of the 118 known chemical elements, and it's represented on the periodic table by the symbol Au (from the Latin 'aurum'). As an element, gold consists of only one type of atom and cannot be broken down into a simpler substance. It differs from a compound, which is formed from two or more elements bonded together, and a mixture, where you can physically separate the individual components that make it up.
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How does food cooked in a frying pan have anything to do with kinetic energy?
um I believe its heat transfer, or something called ligma.
Consider butter (density= 0.860 g/mL) and sand (density= 2.28 g/mL). If 1.00 mL of butter were mixed with 1.00 mL of sand and mixed as thoroughly as possible what would be the density of the resulting mixture?
The density of the mixture will be 1.57 g/cm³.
Step 1. Calculate the mass of the butter.
[tex]\text{Mass} = \text{1.00 cm}^{3 } \times \frac{\text{0.680 g} }{\text{1 cm}^{3 }} = \text{0.860 g}\\[/tex]
Step 2. Calculate the mass of the sand.
[tex]\text{Mass} = \text{1.00 cm}^{3 } \times \frac{\text{2.28 g} }{\text{1 cm}^{3 }} = \text{2.28 g}\\[/tex]
Step 3. Calculate the density of the mixture.
Total mass = 0.860 g + 2.28 g = 3.14 g.
Total volume = 1 cm³ + 1 cm³ = 2 cm³
[tex]\text{Density} = \frac{\text{mass}}{\text{volume}} = \frac{\text{3.14 g} }{\text{2 cm}^{3 }} = \textbf{1.57 g/cm}{^{3}\\[/tex]
Would it take 5 cell divisions for one original cell to produce 128 new cells?
Yes, it will take 5 cell divisions for one original cell to produce 128 cells.
How does the density of air affect its movement in a convection cell?
a convection cell is the phenomenon that occurs when density differences exist within a body of liquid or gas. These density differences result in rising and/or falling currents, which are the key characteristics of a convection cell. When a volume of fluid is heated, it expands and becomes less dense and thus more buoyant than the surrounding fluid. The colder, denser part of the fluid descends to settle below the warmer, less-dense fluid, and this causes the warmer fluid to rise. Such movement is called convection, and the moving body of liquid is referred to as a convection cell.
Final answer:
Air density impacts movement in convection cells, with warm, less dense air rising and cool, denser air sinking, creating a cycle that drives convection currents and influences weather patterns.
Explanation:
The density of air affects its movement in a convection cell because warm air that is less dense rises, while cooler, denser air sinks. This movement of air due to differences in density is what drives convection currents. As a fluid, such as air, is heated, it expands, becoming less dense than the surrounding fluid. This decrease in density results in buoyancy, causing the air to rise. At higher elevations or as the air mass expands and comes into contact with cooler environments, it loses heat, becomes denser and hence sinks back down, creating a convection cell, as seen in phenomena such as Hadley cells and local weather patterns like thunderstorms. In essence, the difference in density affected by the temperature is responsible for the movement of air within these cells, transferring energy from one place to another.
NEED HELP! Assume that the variables x and y are INVERSELEY related. If k = 18, what is the y value for each of the following points? Be sure and record your data to be used in the following problem. x=1 y=______, x=2 y=______, x=3 y=_______, x=6 y=_______, x=9 y=______, x=18 y=_______
answers for 1 0.05, 9, 18
answers for 2 0.11, 9, 36
answers for 3 0.16, 6, 54
answers for 6 0.33, 3, 108
answers for 9 0.5, 2, 162
answers for 18 0.75, 1, 324
Given data:
x ∝ 1/y
Equation related to question:
x = k/y , y = K / x
Part 1:x=1 y=______ , K = 18
Solution:
Equation : y = K / x
Putting values:
y= 18 / 1 = 18 , Hence Y = 18
Part 2:x=2 y=______ , K =18
Equation : y = K /x
Putting values:
y = 18/2 = 9 , Hence y = 9
Part 3:x=3 y=_______, K = 18
Equation : y = K /x
Putting values:
y = 18 / 3 = 54 , Hence y = 6
Part 4:x=6 y=_______, K = 18
Equation : y = K /x
Putting values:
y = 18 / 6 = 108 Hence y = 3
Part 5 :x=9 y=______, K = 18
Equation : y = K /x
Putting values:
y = 18 /9 = 2 Hence y = 2
Part 6:x=18 y=_______ , k = 18
Equation : y = K /x
Putting values:
y = 18 / 18 = 324 Hence y = 1
Here are the answers:
What is nuclear energy? energy from solar panels energy locked in the nucleus of an atom energy of moving electrons energy that travels in waves
Answer: Energy locked in the nucleus of an atom
Explanation:
Nuclear energy is an energy which binds the constituents of nucleus of an atom together.
There are two types of nuclear reaction from which nuclear energy is produced:
Nuclear fusion: Two small nuclei combine together to form stable nucleus with release in energy.Nuclear fission: One larger unstable nucleus splits into smaller stable nuclei with release in energy.PLEASE SHOW WORK I CANT FIGURE THESE OUT
1. 5,400 inches to miles: 0.085227 miles.
2. 16 weeks to seconds: 8,966,400 seconds.
3. 54 yards to mm: 49,381.76 mm.
4. 36 cm/sec to mph: 0.080502 mph.
using the dimensional analysis-
1. 5,400 inches to miles:
5,400 inches * (1 foot / 12 inches) * (1 mile / 5,280 feet) = 0.085227 miles.
2. 16 weeks to seconds:
16 weeks * 7 days/week * 24 hours/day * 60 minutes/hour * 60 seconds/minute = 8,966,400 seconds.
3. 54 yards to mm:
54 yards * 3 feet/yard * 30.48 cm/foot * 10 mm/cm = 49,381.76 mm.
4. 36 cm/sec to mph:
36 cm/sec * (1 foot / 30.48 cm) * (1 mile / 5,280 feet) * (3600 sec / 1 hour) = 0.080502 mph.
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The complete question is -Dimensional Analysis Worksheet Set up and solve the following using dimensional analysis.
1 mile = 5,280 ft 1 inch = 2.54 cm
3 feet = 1 yard 454 g = 1lb
946 ml 1 qt 4 qt=1 gal
1) 5,400 inches to miles
2) 16 weeks to seconds
3) 54 yards to mm
4) 36 cm/sec to mph
There are four fundamental forces in the universe. One of these helps hold the nuclei of atoms together. This force, which helps _______ overcome their natural inclination to repel each other is called the ___________ force. A) protons; strong B) protons; electromagnetic C) subatomic particles; strong D) protons and electrons; weak
The force which helps protons overcome their natural inclination to repel each other is call the strong force. A
Final answer:
The force that helps protons overcome their natural repulsion and holds atomic nuclei together is the strong nuclear force, making option A (protons; strong) the correct answer.
Explanation:
There are four fundamental forces in the universe, one of which plays a critical role in maintaining the structure of atomic nuclei despite the electrostatic repulsion between protons. This force, which helps protons overcome their natural inclination to repel each other, is known as the strong nuclear force. The strong nuclear force acts not only between protons but also between neutrons, and between protons and neutrons, effectively holding the nucleus of an atom together. It is much stronger than the electrostatic repulsion between the positively charged protons within the distances found inside the nucleus but becomes virtually non-existent over larger distances.
Thus, the correct answer to the question is: This force, which helps protons overcome their natural inclination to repel each other, is called the strong nuclear force, corresponding to option A) protons; strong.
which of these contains genetic material but is not classified as living
A. bacteria
B. virus
C. lizzard
D. protozoa
A virus is considered living in some ways, but in the end, they cannot be considered a living organism because they cannot reproduce by themselves.
B is correct, a virus is not classified as living
The entity that contains genetic material but are not classified as living are viruses. Thus, option B is correct.
What is a genetic material?Genetic material is described as the hereditary substance. It is carried in the cell, and contains the specified information to the organism. The material can be of two types, Deoxyribose nucleic acid (DNA), and Ribonucleic acid (RNA).
The characteristics that defines the entity to be living is the presence of the nucleic acid and the ability to reproduce. Viruses are the organisms that can reproduce inside the host cell only.
Thus, with the inability to reproduce outside the host cell, viruses are considered as non-living in spite they contain genetic material. Hence, option B is correct.
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how does the particle in plasmas compare with the particles in solids
Students working in lab accidentally spilled 17 l of 3.0 m h2so4 solution. they find a large container of acid neutralizer that contains baking soda, nahco3. how many grams of baking soda will be needed to neutralize the sulfuric acid spill? do not include a unit in your answer or it will be counted wrong. use correct significant figures
Answer is: 8568.71 of baking soda.
Balanced chemical reaction: H₂SO₄ + 2NaHCO₃ → Na₂SO₄ + 2CO₂ + 2H₂O.
V(H₂SO₄) = 17 L; volume of the sulfuric acid.
c(H₂SO₄) = 3.0 M, molarity of sulfuric acid.
n(H₂SO₄) = V(H₂SO₄) · c(H₂SO₄).
n(H₂SO₄) = 17 L · 3 mol/L.
n(H₂SO₄) = 51 mol; amount of sulfuric acid.
From balanced chemical reaction: n(H₂SO₄) : n(NaHCO₃) = 1 :2.
n(NaHCO₃) = 2 · 51 mol.
n(NaHCO₃) = 102 mol, amount of baking soda.
m(NaHCO₃) = n(NaHCO₃) · M(NaHCO₃).
m(NaHCO₃) = 102 mol · 84.007 g/mol.
m(NaHCO₃) = 8568.714 g; mass of baking soda.
how are the three beams on a triple beam balance different
The size difference between the beams indicates the weights and reading scales that each beam measures.
What is triple beam balance?The triple beam balance is a precision instrument for measuring mass. It gets its name from its three beams, with the middle beam being the largest, the far beam being medium in size, and the front beam being the smallest.
It is made up of three beams, each with a single sliding weight whose size corresponds to the gradations of the notched scale on the beam.
It gets its name from its three beams, with the middle beam being the largest, the far beam being medium in size, and the front beam being the smallest.
The size variation among the beams implies the weights and reading scales that each beam measures.
Thus, these are the differences between the three beams on a triple beam balance.
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PLEASE HELP WILL MARK BRAINIEST
Which is a property that most metals have in common?
Select one:
a. brittle
b. shiny
c. poor conductor of electricity
d. tend to gain 1 or more electrons in a chemical reaction
Tellurium is a silvery-white, brittle element. Its electrical conductivity varies, but increases slightly with exposure to sunlight.
This element belongs to which region of the periodic table of the elements?
Select one:
a. metalloids
b. noble gases
c. metals
d. nonmetals
Most of the elements of which region of the periodic table are located directly to the right of the metalloids?
Select one:
a. metals
b. nonmetals
c. noble gases
Which is a property that most solid nonmetals have in common?
Select one:
a. shiny
b. brittle
c. tend to lose 1 or more electrons in a chemical reaction
d. good conductors of electricity
Which is a property that most nonmetals have in common?
Select one:
a. poor conductors of electricity
b. tend to lose 1 or more electrons in a chemical reaction
c. malleable
d. shiny
Metals have the property of being shiny. Tellurium is a metal and belongs to the metallic region of the periodic table. Solid nonmetals are brittle, and most nonmetals are poor conductors of electricity.
The property that most metals have in common is that they are shiny. This is due to the way metals reflect light. Metals have free electrons that are able to move around, creating a smooth and shiny surface.
Tellurium is a silvery-white, brittle element that belongs to the metals region of the periodic table.
Most of the elements located directly to the right of the metalloids in the periodic table are nonmetals.
The property that most solid nonmetals have in common is that they are brittle. Nonmetals tend to be brittle because they lack the metallic bonding that gives metals their strength and ductility.
A property that most nonmetals have in common is that they are poor conductors of electricity. Nonmetals do not have free electrons like metals, so they are not able to conduct electricity as well.
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The beginning expansion of the big bang happened relatively slowly compared to how it is expanding now.
A. True
B. False
The statement reporting the expansion nowadays has been faster than the expansion after the big bang theory has been true. Thus, option A is correct.
The expansion of the universe has been based on the distance in between the celestial bodies concerning the forces. The big bang theory has been responsible for the explosion that has been led to the arrangement of the bodies in the universe that has been based on their sizes and force.
However, there has been an explosion that has been slowed down after the big bang theory. Although in recent years there has been the presence of dark energy found that has been responsible for the increased expansion of the universe.
Thus, the statement reporting the expansion nowadays has been faster than the expansion after the big bang theory has been true. Thus, option A is correct.
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match each alkane names and structures.
First structure is CH₃-CH₃. It is an alkane with two carbon atoms hence it is called ethane.
Second structure is CH₃-CH₂-CH₂-CH₃. It is an alkane with four carbon atoms hence it is called butane.
Third structure is CH₄. It is an alkane with one carbon atom hence it is called methane.
Fourth structure is CH₃-CH₂-CH₃. It is an alkane with three carbon atoms hence it is called propane.
Aspirin has a molar mass of 180g/mol. If the empirical formula is C9H8O4, what is the molecular formula of aspirin ? Fill in the blanks for the subscripts of the formula below. You have to have a whole number subscript for each blank even if it is a 1. C__H__O__
Answer: [tex]C_9H_8O_4[/tex]
Explanation:
Molecular formula is the chemical formula which depicts the actual number of atoms of each element present in the compound. Empirical formula is the simplest chemical formula which depicts the whole number of atoms of each element present in the compound.
The empirical formula is [tex]C_9H_8O_4[/tex]
The empirical weight of [tex]C_9H_8O_4[/tex] = 9(12)+8(1)+4(16)= 180g.
The molecular weight = 180 g/mole
Now we have to calculate the molecular formula:
[tex]n=\frac{\text{Molecular weight}}{\text{Equivalent weight}}=\frac{180}{180}=1[/tex]
The molecular formula will be=[tex]1\times C_9H_8O_4=C_9H_8O_4[/tex]
Thus molecular formula of aspirin will be [tex]C_9H_8O_4[/tex]
The molecular formula of aspirin is C9H8O4.
What are the subscripts for carbon, hydrogen, and oxygen in the molecular formula of aspirin?In the molecular formula of aspirin, there are 9 carbon atoms, 8 hydrogen atoms and 4 oxygen atoms.
The empirical formula C9H8O4 gives the ratio of the elements in the compound, but the molecular formula provides the actual number of atoms. Therefore, the molecular formula of aspirin is C9H8O4.
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What is the smallest particle of a covalent compound that has the properties of that compound? a molecule an ion an element an atom
A molecule is the smallest particle of a covalent compound that has the properties of that compound.
Explanation:A molecule is the smallest particle of a covalent compound that still has the properties of the compound.
why does magnesium have a larger atomic radius that chlorine
Magnesium AR: 150 pm
Chlorine AR: 100 pm
A fusion reaction takes place between carbon and another element neutrons are released and a different element is formed the different element is
A fusion reaction takes place between carbon and another element. Neutrons are released, and a different element is formed. The different element is Lighter than helium.
A fusion reaction takes place between carbon and another element neutrons are released and a different element is formed.
The different element is heavier than helium.
What is a fusion reaction?In a fusion reaction, two light nuclei merge to form a single heavier nucleus.
Nuclear fusion produces elements that are heavier than helium.
A fusion reaction takes place between carbon and another element. neutrons are released, and a different element is formed.
The reason behind that helium is the lightest element and if carbon fused with another element, it would be heavier.
Hence, a fusion reaction takes place between carbon and another element neutrons are released and a different element is formed.
The different element is heavier than helium.
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determine whether the nucleus or the electron cloud contributes the most to the volume of an atom. Explain.
Answer:
The electron cloud
Explanation:
Rutherford’s gold foil experiment showed that the atom consisted of a tiny nucleus inside of a much larger electron cloud.
The diameter of the electron cloud is about 50 000 times that of the nucleus.
The electron cloud contributes the most to the volume of an atom, as it occupies almost all of the atom's space compared to the much smaller nucleus that contains most of the mass.
Explanation:To determine whether the nucleus or the electron cloud contributes the most to the volume of an atom, we need to consider the structure of an atom. An atom is made up of a nucleus, containing protons and neutrons, and an electron cloud that contains electrons. While the nucleus contains nearly all of the atom's mass due to the relative mass of protons and neutrons, it's the electron cloud that occupies the majority of an atom's volume. The comparison in size is dramatic: If the nucleus were a blueberry, the atom could be the size of a football stadium, with the empty space being the difference between the two.
The electron cloud, which is where electrons have a significant probability of being found, does not have a definite boundary. Nevertheless, the space that is encompassed within where an electron can be found with 95% probability is used to define an atom's size. Given these facts, the electron cloud contributes far more to an atom's volume than the dense, compact nucleus at the center.
About 75% of living matter is made up of which two essential chemicals?
calcium,phosphorus,potassium,and sulfer
Answer:
Carbon and oxegyn
Explanation:
Crystals are characterized by particular patterns that repeat in how many dimensions? A. three dimensions
B. one dimension only
C. two dimensions only
A option is correct answer .
Answer:
A. three dimensions
Explanation:
Crystal lattice have a three dimensional array of repeating units. For example, in the NaCl crystal the repeating units are the Na⁺ and Cl⁻ ions. The Na⁺ and Cl⁻ ions are arranged alternately along the x, y and z axis. The smallest repeating unit of a cell is called unit cell. Crystal lattice have a definite geometry which is because of this rigid array of unit cells.
A 5.00g sample of impure CaCO3 is found to react completely with 100.0 mL of 0.100 M of H2SO4. The equation for the reaction is: CaCO3 (s) + H2SO4 (aq) —> CaSO4 (s) + CO2 (g) + H2O (l). What is the mass percent CaCO3 in the impure sample?
Hey there!:
Given the reaction:
CaCO3(s) + H2SO4(aq) -------> CaSO4(s) + CO2(g) + H2O(l)
volume in liters( H2SO4 ) = 100 mL / 1000 => 0.1 L
Moles of H2SO4:
Molarity * Volume ( L )
0.100 * 0.1 => 0.01 moles of H2O4
1 mole H2SO4 reacted with -------------- 1 mole CaCO3
0.01 moles H2SO4 reacted with ------- 0.01 moles CaCO3
Molar mass CaCO3 = 100.0869 g/mol
Mass of CaCO3 :
Moles of CaCO3 * Molar mass CaCO3
0.01 * 100.0869 => 1.000869 g of CaCO3
Therefore:
% mass = ( Mass of CaCO3 / mass of sample ) * 100
% mass = ( 1.000869 / 5.00 ) * 100
% mass = 0.2001738 * 100
% mass = 20.01%
Hope that helps!
What is the chemical name of the compound represented by the formula Ni2O3? Use the list of polyatomic ions and the periodic table to help you answer.
Answer : The chemical name of the compound [tex]Ni_2O_3[/tex] is, nickel(III)oxide.
Explanation :
The rules for naming the chemical name of the compound :
First element in the formula is named first and keep its element name. Gets a prefix if there is a subscript on it. Written the oxidation state by the us of roman numeral.Second element is named second. Use the root of the element name plus suffix (-ide). Always use a prefix on the second element.In the given compound, the nickel is the cation and first element in the formula and the oxidation state of nickel is, (+3). The second element is oxygen which is named as oxide.
Thus, the chemical name of the compound [tex]Ni_2O_3[/tex] is, nickel(III)oxide.
The chemical name of the compound represented by the formula Ni₂O₃ is nickel (III) oxide.
Ionic compounds are formed when ions with opposing negative and positive charges form ionic bonds and form compounds, which are compounds made of ions.
Ionic compounds are named by stating the cation first, followed by the anion. When a neutral atom loses one or more electrons, it acquires a positive charge and is called a cation and when an atom gains one or more electrons, it becomes an anion and acquires a negative charge.
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Is cake batter a pure substance or mixture
Cake batter is not a pure substance but rather a mixture because it is made of different ingredients like flour, sugar, and eggs that retain their original properties even when mixed together.
Explanation:Cake batter is not a pure substance, but rather a mixture. In Chemistry, a pure substance is an elemental or compound matter with constant composition and properties throughout. This means it's made up of a single type of particle, like gold (element) or water (compound), which can't be separated into other kinds of matter by physical means.
On the other hand, a mixture consists of two or more different substances which are mixed but not combined chemically.
In cake batter, one can find flour, sugar, eggs, and other ingredients that retain their original properties even when mixed together to make the batter. Therefore, we can classify cake batter as a mixture.
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what happens when a pure substance undergoes a chemical change?
When a substance undergoes a chemical change, it results in different physical properties .
it turns into diffrent pyshical properties
Explanation:
Which of the following observations would indicate that a material is a pure substance
The observation that would indicate that a material is a pure substance is:
C. It cannot be physically broken down into different types of atoms.
A pure substance consists of only one type of atom or molecule, meaning it cannot be broken down into simpler substances by physical means. Option C describes this characteristic, indicating that the material cannot be physically separated into different types of atoms, thus suggesting it is a pure substance. Options A, B, and D describe properties that may or may not be indicative of a pure substance, but they do not directly address the fundamental composition of the material as being made up of only one type of atom or molecule.
The probable question may be:
Which of the following observations would indicate that a material is a pure substance?
A. It does not dissolve in water.
B. It changes color after heating.
C. It cannot be physically broken down into different types of atoms.
D. It can be physically broken down into different types of molecules.
You have a cup of water and a packet of powdered juice mix. You add some of the juice mix to the cup of water and stir. The powder dissolves completely. You decide to add more juice mix to the cup and stir again. This time chunks of powder are floating on the surface of the water. What can you conclude about the solution?
Please help me with these questions I don't get science
How many different elements are in our bodies?
What are the 6 elements that make up 95% of our bodies?
There are at least 60 elements in our bodies.
Other elements may be present, but in such small quantities that we cannot detect them with current technologies.
The six most abundant elements (by mass) in our bodies are:
Oxygen 65 %
Carbon 18 %
Hydrogen 10 %
Nitrogen 3.2 %
Calcium 1.4 %
Phosphorus 1.1 %
TOTAL = 99 %
A 62.6-gram piece of heated limestone is placed into 75.0 grams of water at 23.1°C. The limestone and the water come to a final temperature of 51.9°C. The specific heat capacity of water is 4.186 joules/gram degree Celsius, and the specific heat capacity of limestone is 0.921 joules/gram degree Celsius. What was the initial temperature of the limestone? Express your answer to three significant figures.
m₁ = mass of water = 75 g
T₁ = initial temperature of water = 23.1 °C
c₁ = specific heat of water = 4.186 J/g°C
m₂ = mass of limestone = 62.6 g
T₂ = initial temperature of limestone = ?
c₂ = specific heat of limestone = 0.921 J/g°C
T = equilibrium temperature = 51.9 °C
using conservation of heat
Heat lost by limestone = heat gained by water
m₂c₂(T₂ - T) = m₁c₁(T - T₁)
inserting the values
(62.6) (0.921) (T₂ - 51.9) = (75) (4.186) (51.9 - 23.1)
T₂ = 208.73 °C
in three significant figures
T₂ = 209 °C
To find the specific heat capacity of the metal, we can use the formula: q = mcΔT, where q is the heat transferred, m is the mass, c is the specific heat capacity, and ΔT is the change in temperature. Substituting the given values and solving, we find that the specific heat capacity of the metal is approximately 0.252 J/g °C.
Explanation:To find the specific heat capacity of the metal, we can use the formula: q = mcΔT, where q is the heat transferred, m is the mass, c is the specific heat capacity, and ΔT is the change in temperature. In this case, we know the initial and final temperatures of the metal, as well as the mass of the water, so we can plug these values into the equation. Rearranging the equation to solve for c, we have: c = q / (mΔT). Substituting the values and solving, we find that the specific heat capacity of the metal is approximately 0.252 J/g °C.
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