Answer:
complex
Explanation:
becaause it fits in the words equation I hoped i helped
h) Given that the boiling point of substance X is around 105°C. Why can't we
use water bath to determine the boiling point of substance X?
Answer:
because the boiling point of water is 100°C the water bath would boil before the substance
What is the molarity of a solution
made by dissolving 18.9 g of
ammonium nitrate (NH4NO3) in
enough water to make 855 mL of
solution?
Molar Mass N: 14.01 g/mol
Molar Mass H: 1.008 g/mol
Molar Mass O: 16.00 g/mol
Answer:
Molarity = 0.28 M
Explanation:
Given data:
Mass of NH₄NO₃ = 18.9 g
Volume of solution = 855 mL (855mL × 1 L/1000 mL = 0.855 L)
Molarity of solution = ?
Solution:
Number of moles of NH₄NO₃:
Number of moles = mass/molar mass
Number of moles = 18.9 g/ 80.043 g/mol
Number of moles = 0.24 mol
Molarity:
Molarity = number of moles of solute / volume in L
Molarity = 0.24 mol /0.855 L
Molarity = 0.28 M
Answer:
0.28
Explanation:
:D
Dry ice changes from a solid to a gas in a process known as A. Melting B. Freezing C.sublimation
Answer:
c
Explanation:
solid to gas directly
What is the attraction between all objects to have matter
Answer:
Gravity.
Explanation:
In science, matter can be defined as anything that has mass and occupies space. Any physical object that is found on earth is typically composed of matter. Matter are known to be made up of atoms and as a result has the property of existing in states.
Generally, matter exists in three (3) distinct or classical phases and these are;
1. Solid: it is the state of matter in which the physical substance has a definite shape and fixed volume but not compressible. Examples of solids are pen, screwdriver, television, car etc.
2. Liquid: it is the state of matter in which the physical substance can be poured and it takes the shape of its container. Also, liquids generally have a definite volume. Examples of liquids are urine, water, milk, blood etc.
3. Gas: it is the state of matter in which the physical substance has no definite shape or volume and as a result fills all available space. Also, gases are easily compressible and can flow. Examples of gases are hydrogen, oxygen, argon, nitrogen etc.
The attraction between all objects that have matter is generally referred to as gravity.
Generally, this force of attraction (gravity) attracts an object (body) towards another having mass, or towards the center of a planetary body such as earth.
The diagram shows the movement of magma due to
convection currents.
Based on the diagram, which
part of Earth is the
coolest?
A) the crust
Crust
B) the mantle
the outer core
Mantle
C) Outer core
D) the inner core
Inner core
Answer:
A) The crust
hope this helps :)
Explanation:
Answer:
The coolest part in the diagram shown is A.) The Crust
Explanation:
This is because as more and more layers form, they soon harden because they are further away from the heat force, which would be the core.
Hope this helps. Sorry if I am wrong. ;-;
How are electrons added to orbitals in an electron configuration?
Answer:
Electrons are added to atomic orbitals in order from low energy bottom of the graph to high (top of the graph according to the Aufbau principle. Principle energy levels are color coded, while sublevels are grouped together and each circle represents an orbital capable of holding two electrons
Explanation:
Plz plz help
Which model shows 5 electrons in the outer shell of the atom?
A.2
B.3
C.4
D.1
Answer:
D
Explanation:
there are 5 electrons in the outer shell of the first picture
According to electronic configuration, model 1 shows 5 electrons in the outer shell of the atom.
What is electronic configuration?
Electronic configuration is defined as the distribution of electrons which are present in an atom or molecule in atomic or molecular orbitals.It describes how each electron moves independently in an orbital.
Knowledge of electronic configuration is necessary for understanding the structure of periodic table.It helps in understanding the chemical properties of elements.
Elements undergo chemical reactions in order to achieve stability. Main group elements obey the octet rule in their electronic configuration while the transition elements follow the 18 electron rule. Noble elements have valence shell complete in ground state and hence are said to be stable.
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If an 85.0 mL container of helium gas at standard pressure is heated from 20.oC to 91oC and the pressure is increased to 2.8 atm, then what would the new volume be for the He gas
Answer: V₂ = 37.71mL
Explanation: To determine the new volume of Helium gas, use the Combined Gas Law, which states the following relationship among pressure, volume and temperature:
[tex]\frac{P_{1}V_{1}}{T_{1}} =\frac{P_{2}V_{2}}{T_{2}}[/tex]
where index 1 relates to the initial state of the gas and index 2 to the final state of the gas.
Temperature is in Kelvin, so:
T = °C + 273
For this situation, standard pressure is 1 atm. Temperatures will be:
T₁ = 20 + 273 = 293 K
T₂ = 91 + 273 = 364 K
Solving:
[tex]V_{2}=\frac{T_{2}P_{1}V_{1}}{P_{2}T_{1}}[/tex]
[tex]V_{2}=\frac{364*1*85}{2.8*293}[/tex]
[tex]V_{2}=\frac{30940}{820.4}[/tex]
[tex]V_{2}=[/tex] 37.71
The new volume of He gas is 37.71 mL.
What does the term "resolution" mean
Answer:
there's two
Explanation:
resolution means:
a decision to do or not to do something
resolution also means:
the quality of being determined
PLEASE HELP FAST!!! 50 PTS PLUS BRAINLIEST
Convert the following:
0.0087 micrograms = ______ centigrams
87,000,000
becuase itis
According to kinetic theory, all matter is made up of small particles. The particles are constantly
moving
Diagram 1 shows how the particles may be arranged in a solid.
Diagram 1
(a)
One kilogram of a gas has a much larger volume than one kilogram of a solid
Use kinetic theory to explain why.
Enter your answer
Answer:
Explanation:
(a) there are strong forces (of attraction) between the particles in a solid
accept molecules / atoms for particles throughout
accept bonds for forces
1
(holding) the particles close together
particles in a solid are less spread out is insufficient
1
or
(holding) the particles in a fixed pattern / positions
but in a gas the forces between the particles are negligible
accept very small / zero for negligible
accept bonds for forces
1
so the particles spread out (to fill their container)
accept particles are not close together
gas particles are not in a fixed position is insufficient
One kilogram of a gas has a much larger volume than one kilogram of a solid. In kinetic theory particles in a solid are less spread out but in gas the force between the particles are negligible.
What is Kinetic Theory of matter ?The kinetic theory of matter states that all matter is made up of tiny particles which are constantly moving in a state of motion. All particles should posses energy.
Thus from above conclusion we can say that One kilogram of a gas has a much larger volume than one kilogram of a solid. In kinetic theory particles in a solid are less spread out but in gas the force between the particles are negligible.
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Hi does anyone have the data table answers for the Charles Law Lab Report from Edge?
Answer:
Last Column is:
Explanation:
98 , 7.8 , 371 and 0.98
If 0.621miles = 1 km, how many miles will a person run during a 15 km race?
What does the slope of a distance versus time graph represent?
Total time
Average time
Average distance
Speed
Answer:
Speed
Explanation:
Motion can be represented by a distance-time graph, which plots distance on the y-axis and time on the x-axis. The slope of a distance-time graph represents speed. The steeper the slope is, the faster the speed.
Hope this helps!:)
what type of potential energy do fuels contain
Answer:
It contains chemical potential energy.
Explanation:
Which has a greater ionization energy: lithium or bromine? Which has a greater ionization energy: vanadium or sodium?
6
The
force between each planet and the Sun keeps the planets in orbit around the Sun.
OA.
frictional
OB magnetic
OC.
gravitational
OD.
nuclear
Reset
Next Question
Answer:
oc gravitaional
Explanation:
Specific gravity compares the density of a substance to the density of _____.
PLEASE HELP ILL GIVE YOU 15 POINTS !!!!!!
Answer:
Specific gravity compares the density of a substance to the density of air.
Specific gravity is compared the density of a substance to the density of water.
What is specific gravity?Specific Gravity is a dimensionless quantity that can be defined as the ratio of the density of a substance to the density of the water at a particular temperature.
The mathematical formula of the specific gravity can be written as:
Specific gravity = density of substance / density of water
The density of water at 4°C is used as a reference point as water has the highest density of 1000 kg/m³. Specific gravity or relative gravity does not have any dimension as it is a dimensionless quantity.
Specific gravity is the ratio of a substance’s density to that of water at a specific temperature. The temperature plays an important role in determining the specific gravity of a substance.
Therefore, specific gravity is a characteristic of the substance at a particular temperature and pressure that also affects the specific gravity.
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What does it mean when you ask your dad whats he going to do with the chikens and hes says feed them some fried chiken?
Answer:
It means your dad is making those chickens cannibal's.......
Explanation:
Answer:
Hes gonna cook those chickens.....
Need help in these 2 questions
Answer:
1 = 7.5m/s and 2 = 8m/s
Explanation:
For question no. 1
Given
wavelength = 5 m
Frequency = 1.5 Hz
Velocity =?
We have the formula that
Velocity = wavelength * frequency
= 5 * 1.5
= 7.5 m/s
For question no. 2
Frequency = 2 Hz
Wavelength = 4 m
Velocity = ?
We have the formula that
Velocity = wavelength * frequency
= 4* 2
= 8 m/s
Hope it will help :)
Answer:
1. 7.5m/s
2. 8m/s
Explanation: velocity = Wavelength x Frequency so 5m*1.5Hz=7.5m/s and 2Hz*4m=8m/s
What is the correct name for a compound with two iron atoms and three oxygen atoms?
iron(II) oxide
iron(I) oxide
iron(III) oxide
iron(3) oxide
PLEASE HELP ASAP
Answer:
iron(lll)oxide
Explanation:
has three oxygen atoms
The correct formula for the compound is iron(III) oxide with two iron atoms and three oxygen atoms. Therefore, option (3) is correct.
What is iron(III) oxide?Fe₂O₃ is an inorganic compound that has the chemical name Iron(III) oxide. Iron(III) oxide is also known as Hematite or Red iron oxide. This compound is naturally found in rocks of all ages. It is odorless, appears as a Red-brown solid, and has a pH value of 7.
Iron (III) oxide also called ferric oxide, is formed by the oxidation of iron. This can be prepared by electrolyzing a sodium bicarbonate solution in the laboratory, with an iron anode. The hydrated iron(III) oxide obtained which is dehydrated at around 200 °C.
The oxidation state of iron can be calculated as oxygen has an oxidation number of -2.
2x + 3(-2) = 0
2x = 6
x = +3
Therefore, the chemical formula Fe₂O₃ has the name Iron(III) oxide.
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Which condition must exist in order for conduction to occur between two substances?
ОО
A ) The molecules of the substances must be touching.
B) Both substances must be the same temperature.
C) At least one substance must be a liquid
D) Most of the molecules must be slow moving.
Answer: B
Explanation:
Answer:
B. Both substances must be the same temperature.
Explanation:
Megan let her wagon outside what was raining and filled with water. When Megan tried to move the wagon that afternoon, she failed to budge the wagon. Why did Megan's wagon become hard to move?
Answer:
The rain filled the wagon with water meaning it gave the wagon more weight which made it hard to move.
1 2 3 4 5 6 7 8 9 10 Suna passes an electric current through a sample of clear, colorless, and odorless liquid. As the experiment continues, bubbles form, and the volume of liquid decreases. Suna collects samples of two colorless, odorless gases that bubble out of the liquid. One of the gases burns. Neither the original liquid nor the other gas burns. Which is the best explanation of her results
The question is incomplete, the complete question is;
Suna passes an electric current through a sample of clear, colorless, and odorless liquid. As the experiment continues, bubbles form, and the volume of liquid decreases. Suna collects samples of two colorless, odorless gases that bubble out of the liquid. One of the gases burns. Neither the original liquid nor the other gas burns. Which is the best explanation of her results? The electric current changed some of the sample to gas even though the sample was not breaking down. Therefore, the original liquid is a compound. The electric current released a gas that was odorless and colorless, like the original sample. Therefore, the original liquid is an element. The sample was broken down by the electric current and formed a new substance that could burn. Therefore, the original liquid is a compound. The sample lost some of its volume, but the gas still had the same chemical makeup as the original sample. Therefore, the original liquid is an element.
Answer:
The sample was broken down by the electric current and formed a new substance that could burn. Therefore, the original liquid is a compound.
Explanation:
When electric current is passed through a compound, the compound may become broken down to release its constituents. We refer to this phenomenon as electrolysis. We can now say that the substance has been 'decomposed' electrolytically.
Since the original sample was decomposed to yield a gas that could burn and one that couldn't burn even though the original sample couldn't burn, then the original sample is a compound.
What is the oxidation state of the copper in the compund of CuCl²
Answer:
The oxidation number of metallic copper is zero. In its compounds, the most common oxidation number of Cu is +2. Less common is +1. Copper can also have oxidation numbers of +3 and +4
Explanation:
aluminum bromide reacts with chlorine gas to produce aluminum chloride and bromide gas. if we have 9 moles of chlorine gas. how many moles of chlorine can we produce?
Moles of Bromine produced = 9 moles
Further explanationGiven
9 moles of Chlorine gas
Word equation
Required
Moles of Chlorine produced
Solution
We change the word equation into a chemical equation (with a formula)
Aluminum bromide reacts with chlorine gas to produce Aluminum chloride and bromide gas
2AlBr₃+3Cl₂⇒2AlCl₃+3Br₂
moles Cl₂ = 9
Maybe you mean, how many moles of Bromine can we produce?
From equation, mol ratio Cl₂ : Br₂ = 3 : 3, so mol Br₂=mol Cl₂=9 moles
how is mathematics utilized in performing science
Answer:
Mathematics is used in Physical Science to calculate the measurements of objects and their characteristics, as well as to show the relationship between different functions and properties. Arithmetic, algebra and advanced mathematics may be used.
Explanation:
Which of the following elements is the least electronegative?
A. NA
B. Al
C. Cl
D. Si
Answer:
na
Explanation:
gggggggggggggggggggggggggg
Cl (chlorine) ion is negatively charged.
Please help me, Thank you!
Answer:
5
Explanation:
The electrons in the outermost shell are the valence electrons. Since there are 5 electrons in the third energy level, there are 5 valence electrons.
Hope that helps.
What does percent composition tell you about a substance?
O
A. It gives you the molecular formula of the substance,
B. It tells you what the substance is made of
O C. It gives you the total mass of the substance,
OD. It tells you how many moles are in the substance,
Answer:
Percent composition tells you which types of atoms (elements) are present in a molecule and their levels. Percent composition can also tell you about the different elements present in an ionic compound as well.ion:
Answer:
Explanation:hey
