Answer:
Grating
Explanation:
I think you need to grate it
Answer: The sugar would dissolve in water. You could then pour off the solution and wash the remaining sand with a bit more water. Heat the water to evaporate it from the sugar, and the two are separate
Explanation:
What is the frequency of radiation whose wavelength is 2.51 x 10 -7m?
The frequency of radiation : 1.2 x 10¹⁵ Hz
Further explanationRadiation energy is absorbed by photons
The energy in one photon can be formulated as
[tex]\large{\boxed{\bold{E\:=\:h\:.\:f}}}[/tex]
Where
h = Planck's constant (6,626.10⁻³⁴ Js)
f = Frequency of electromagnetic waves
f = c / λc = speed of light
= 3.10⁸ m/s
λ = wavelength
Wavelength-λ is 2.51 x 10⁻⁷m
The frequency :
[tex]\tt f=\dfrac{3.10^8}{2.51\times 10^{-7}}=1.2\times 10^{15}[/tex]
the table below gives the numbers of protons, electrons, and neutrons in four atoms. based on the table, which atom had a charge of -1
5 Daniel has dropped two glass jars containing sugar
and salt as he tried to get them down from the
kitchen cupboard. He now has a mixture of glass,
sugar and salt. Describe in detail how he could
separate the three substances. Sugar and salt are
both soluble in water, but only sugar is soluble in
ethanol (remember that ethanol is flammable and
should not be heated directly).
Answer:
He could separate the mixture through filtration and fractional crystallization. Ethanol can also be added in order to remove salt.
Which type of animal can breed on their own but have undergone physiological or behavioral changes due to captivity?
O Undomesticated animals
O Domesticated animals
O Semi-domesticated animals
O Tamed wild animals
what is the definition of chemistry
HELP ASAP! STUDY ISLAND
Solar energy is energy from the Sun that is converted into thermal or _____ energy. A. chemical B. mechanical C. nuclear D. electrical
Explanation:
done here u gooooooooo
Which set of coefficients would balance the following equation
Answer:
3Mg + 2AlCl3 --> 2Al + MgCl2
PLZ HELP QUICK!!
Question - A sample of an element is found to consist of two isotopes. The mass and relative abundance of each isotope is: 24.1 Daltons (41.6 %) and 21.1 Daltons (58.4 %). Calculate the Atomic Weight for the element.(3 points - correct work shown, correct number, correct units) *
Which is one characteristic of deep ocean currents someone pls help
Answer:
visbility if that is an answer
Explanation:
Answer:
hope it helps...
Explanation:
Thermohaline circulation
Deep ocean currents are driven by density and temperature gradients. This thermohaline circulation is also known as the ocean's conveyor belt.
If my answers helped please comment...
A rock dropped Into a glass of water ralses the water level
by 40 milliliters. What can you infer about the rock?
Answer:
You can infert that it has a mass of 40 grams.It also has desnity of 40 grams per millilieter.
Explanation:
The volume of water raised from the glass is equal to the density of the object which displaces water. Hence, 40 g/ml is the density of the rock.
What is Archimedes principle?The Greek mathematician and inventor Archimedes discovered the physical law of buoyancy, which states that any body completely or partially submerged in a fluid (gas or liquid) at rest is subject to an upward, or buoyant, force whose magnitude is equal to the weight of the fluid displaced by the body.
The volume of fluid that has been displaced is equal to the volume of an object that is completely submerged in the liquid or to the portion of the volume below the surface for an object that is only partially submerged.
Therefore, the density of the rock is equivalent to the volume of water level raised in the glass. Thus density of rock is 40 g/ml.
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Write both the complete electron- configuration notation and the noble-gas notation for iodine, I. How many inner-shell electrons does an iodine atom contain?
Answer:
Iodine has an atomic number of 53
Electronic configuration - 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^6 5s^2 4d^10 5p^5
Noble gas configuration - [kr]4d^10 5s^2 5p^5
Iodine have 7 valence shell electron and 46 inner shell electron in the ground state.
The atomic number of Iodine is 53.
Additionally, the Electronic configuration of Iodine is as follows;
1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁵The Noble gas notation for Iodine is;
[Kr]4d^10 5s^2 5p^5Ultimately, Iodine is a member of the halogen group of the periodic table and hence, has 7 valence shell electron and 46 inner shell electron in the ground state.
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The diagram represents a section of Earth that a paleontologist, a
scientist who studies fossils, has been working with for years. Which
statement correctly describes this diagram?
a
b
Layer W contains fossils of organisms that existed on Earth after the organisms found in layers U and R.
Layer U contains fossils of organisms that are older than the organisms found in layer R.
Layers W and U contain fossils that are animal species.
Layers R and W contain fossils that are both types of plant species.
C с
Od
Answer: A
Explanation:
how many single covalent bonds does beryllium form in BeCl2?
Answer:
what I'm not really understand this question
why is iron important constructing bridges and houses?
Shyia bestie we have to talk its really important
Answer:hey... do you still check this..?
Explanation:
What is not a form of thermal energy transfer
Explanation:
The forms of thermal energy transfer are;
ConductionConvection RadiationThermal energy is a form of kinetic energy that causes the particles of a medium to begin to move.
The average kinetic energy is taken as the heat of the system. Heat energy is usually transferred from a place at higher temperature to one with a lower temperature. Heat transfer by conduction occurs in solids when they are in contact. Heat transfer by convection occurs in fluids by the actual movement of the molecules of the medium. Heat transfer by radiation does not require particles.Help me please ????
Answer:
I think it is more that one is correct, so sorry if I'm wrong, if it isn't, it is one of the electron bonding ones
Magnesium combines with oxygen to form magnesium oxide. If 15.05 g of magnesium reacts completely with 7.57 g of oxygen,
what is the percent by mass of oxygen in magnesium oxide?
Answer:
15.05+7.75÷21×100=
Explanation:
total mass÷atomic nass×100
Answer the following questions:
* How is the chemical formula determined for an ionic compound?
* How are the ionic compounds named using IUPAC nomenclature rules?
Answer:
1. The chemical formula is determined by first finding the positive charge, which is cation, and then finding the negative charge, which is the anion. The cation is writing first, than the anion.
2.An ionic compound is named first by its cation and then by its anion.
Explanation:
Just did it.
what are the different ways of how animals reproduce?
Answer:
Sexual and Asexual Reproduction
Explanation:
LOL
A plane travel at 395,000 meters at a rate of 4500 m/s? How long did it take the plane to reach
its destination?
HELP MEEE !!
Answer:
87.78 sExplanation:
The time taken by the plane to reach its destination can be found by using the formula
[tex]t = \frac{d}{v} \\ [/tex]
d is the distance
v is the velocity
From the question we have
[tex]t = \frac{395000}{4500} = \frac{3950}{45} = \frac{790}{9} \\ = 87.77777...[/tex]
We have the final answer as
87.78 sHope this helps you
What must happen for an igneous rock to form
Answer:
Igneous Rocks: form by crystallizing melted material (magma).
Explanation:
They can form either on the surface (extrusive igneous rocks), or deep in the crust (intrusive or plutonic igneous rocks).
200 mL of nitrogen gas at 24K is heated to 47K.
Answer:
See explanation
Explanation:
The question is incomplete. However, base on the given information, one likely question could be that, we calculate the the volume of the nitrogen gas after heating it.
So, we have that:
Initial Volume, V1 = 200mL
Initial Temperature, T1 = 24k
Final Temperature, T2 = 47k
To solve the final volume of the gas, we apply the following ideal gas law equation
V1 * T1 = V2 * T2
Substitute values for V1, T1 and T2
200mL * 24K = V2 * 47K
200mL * 24 = V2 * 47
4800mL = 47V2
Solve for V2
V2 = 4800/47
V2 = 102.13 mL ------- Approximated
Hence, the volume of nitrogen gas after heating is 102.13mL
Neutrons are located
in the nucleus with protons
in the nucleus with electrons
in orbit around the nucleus
both in orbit and in the nucleus
Answer:
Neutrons are located in the nucleus with protons.
Explanation:
Neutrons are located in the nexus of a snippet along with protons. The nexus is the mediate portion of a snippet that contains the utmost of its body.
Protons convey a good count, while neutrons are neutral and don't convey an electric count. Electrons, on the different side, are located in route around the nexus, enwrapping snap situations or electron coverings.
Neutrons are subatomic patches that are one of the immediate ingredients of infinitesimal capitals. They're generally imported by the logo "n or no". Neutrons don't hold any net electric count companies with them.
They befit, still, own a body that's scarcely lesser in significance than that of a proton. Neutrons and protons are inclusively appertained to as nucleons since they bear analogous proprieties inside the capitals of titles.
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3. An air mass that is cool and dry.
a. Maritime tropical
b. Maritime polar
c. Continental tropical
d. Continental polar
4. An air mass that is warm and moist.
a. Maritime tropical
b. Maritime polar
c. Continental tropical
d. Continental polar
Answer:
An air mass that is described as having warm and moist air is called maritime tropical. This occurs when heat and moisture are transferred to the overlying air from the warm waters of the ocean or seas. Maritime Tropical air mass comes from the warm waters of the tropics and the Gulf of Mexico. When warm air moves northward moist air is transported to the United States which causes the increase in precipitation. Maritime Tropical masses are often felt in the Southeast part of the United States.
Explanation:
1. Calculate the mass of iron needed to make 16.25g of iron chloride (3
marks)
2Fe + 3Cl2 → 2FeCl3
Answer:
5.595 g Fe
General Formulas and Concepts:
Chemistry - Stoichiometry
Reading a Periodic TableUsing Dimensional AnalysisExplanation:
Step 1: Define
16.25 g FeCl₃ (Iron III Chloride)
RxN: 2Fe + 3Cl₂ → 2FeCl₃
Step 2: Identify Conversions
Molar Mass of Fe - 55.85 g/mol
Molar Mass of Cl - 35.45 g/mol
Molar Mass of FeCl₃ - 55.85 + 3(35.45) = 162.2 g/mol
Step 3: Stoichiometry
[tex]16.25 \ g \ FeCl_3(\frac{1 \ mol \ FeCl_3}{162.2 \ g \ FeCl_3} )(\frac{2 \ mol \ Fe}{2 \ mol FeCl_3} )(\frac{55.85 \ g \ Fe}{1 \ mol \ Fe} )[/tex] = 5.59533 g Fe
Step 4: Check
We are given 4 sig figs. Follow sig fig rules and round.
5.59533 g Fe ≈ 5.595 g Fe
Place the particles in order from smallest to largest.
1Electron
2Molecule
3Neutron
4Nucleus
5 atom
Answer:
smallest to largest:
Electron, Neutron, Atom, Molecule, Nucleus
Explanation:
sorry if it's not right
Electron--Neutron--Nucleus-- atom--Molecule is the order from smallest to largest.
Why electron is smaller?Electron is the smallest subatomic particles having the radius is about 9.1× 10−31 kg while on the other hand, the size of neutrin is 1.7×10−15 meters. Both neutron and proton are present in the nucleus so nucleus is bigger than neutron. Nucleus is present inside an atom so atom is bigger than nucleus whereas atom is smaller than molecule.
So we can conclude that Electron--Neutron--Nucleus-- atom--Molecule is the order from smallest to largest.
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What does it mean
"1. A chemical reaction. represents what happens in a chemical"
HELP ASAP PLS a 35.0 g block of copper is dropped into 450 grams of water
at 21.5 C. The temperature of the water changes to 22.3 C. Does the water's temperature rise or fall?
Answer:
the temperature of the water rises
Explanation:
22.5 < 22.3
What is a food chain? what does it show?
Answer:
A food chain shows how energy is transferred from one living organism to another via food. ... When these animals eat these plant products, food energy and organic compounds are transferred from the plants to the animals.