Answer:
covalent....................
Pls help i'll mark you the brainlest What force is needed to make ball fall on Earth if it has a mass of 13kg
Answer:
gravity.
Explanation:
Can someone solve this question? I'll give brainliest and more points.
Answer:
When a substance undergoes a chemical change it is no longer the same but a burning substance.
Explanation:
That is the correct answer.
answer false or true for each question, (1-5). thanks!
PLEASE QUICK I NEED HELP!!!!! :(
List these drinks in order of kinetic energy, starting with the drink whose particles have the highest kinetic energy.
hot chocolate, water, juice, milk
hot chocolate, juice, milk, water
water, milk, juice, hot chocolate
water, hot chocolate, juice, milk
Water
Milk
Juice
Hot choclate
Answer: The answer is B). Hot Chocolate, Juice, Milk, Water.
Explanation: For the second row, I put the temperature (in °C) in the descending order that looks like this: 50°C, 40°C, 35°C, 15°C.
I hope that my answer is very helpful to your own question about listing these drinks in descending order by starting with the drink whose particles have the highest kinetic energy, please mark me as Brainliest and have a great P.A. Day and weekend! :D
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Jason Ta,
The ambitious of Brainly and the role of The TDSB and WHCI Student of the high school.
This is my almost last question plsss help
Answer:
The Government did not encourage Confucius' philosophy until more than 350 years after Confucius first began teaching.
and
Some kinds of Confucianism we're influenced by other philosophies.
Do gasses have a fixed volume
Answer:
No
Explanation: Gases have no fixed volume and no fixed shape. Gases expand to fill the space available. They can also be compressed into a very small space.
. The best way to separate sodium chloride solution and sand is by:
Answer:
Dissolving the mixture in water, filtering and then perform evaporation on the filtrate
Can I have help with this I have no idea, is this a trick question?
Answer:
yes
Explanation:yes
1. Calculate the energy in joules of a photon of electromagnetic radiation whose frequency is 2.76×1014 s−1 .
Express your answer with the appropriate units.
2. Calculate the energy in joules of a photon of radiation whose wavelength is 418 nm
Express your answer with the appropriate units.
3. What wavelength (in meters) of radiation has photons of energy 6.05×10−19 J ?
Express your answer with the appropriate units.
Answer: 41.5
Explanation:
*20 points* Pls answer following the rules of :No files
No links
No inappropiate responce
clean comments
Thank you!!
When you are drying your hands underneath a hand dryer, this is an example ofA. RadiationB. ConductionC. ConvectionD. Convection
Answer: Convection
Explanation: Convection is the transfer of heat so the heat would be transferred to your hands leaving them dry.
you are given an unknown liquid and asked to determine its identity. You can measure only one physical property. you decide to heat the liquid. You record that the liquid turns vapor at 100c. this demonstrates which physical property. A. melting point B. boiling point C. ability to conduct electricity D. malleability
Answer:
b. boiling point
Explanation:
In the chemical formula for ammonia, NH3 , what does the subscript 3 represent?
the number of ammonia molecules that will bond together
the number of nitrogen atoms in each molecule of ammonia
the number of hydrogen atoms in each molecule of ammonia
the number of nitrogen and hydrogen atoms in each molecule of ammonia
To see the number of atoms of an element in a given molecule we need to multiply stoichiometry to the number that is written on the foot of the element that is stoichiometry. The correct option is option C.
What is atom?Atom is the smallest particle of any element, molecule or compound. Atom can not be further divided. Atoms contains nucleus in its center and electron that revolve around the atom in fixed orbit.
In the nucleus, proton and neutron are present. Electron has -1 charge while proton has +1 charge. Neutron is neutral that is it has no charge. So overall the charge of nucleus is due to only proton, not by neutron.
In the given molecule NH₃, the subscript 3 that is written on the foot of element represents the number of hydrogen atoms in each molecule of ammonia.
Therefore, the correct option is option C.
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why is it important to use deionized water in an experiment
because it removes all of the charged ions in the water, making it safe to mix into medications
Identify the independent and the dependent variables of this statement: Do tomatoes
have a faster growth rate under fluorescent, incandescent, or natural light?
Answer:The dependent variable is the rate of germination and growth. The independent variable is the variety of tomato.
Explanation:i hope this helps you
Dãy các chất tác dụng được với dung dịch HCl loãng tạo thành sản phẩm có chất khí
A.BảO,FE,CaCO3 B.Al,MgO,KOH
C.Na2SO3,CaCO3,Zn D.Zn,Fe2O3,Na2So3
what if water didnt have a negative charge?
Explanation:
The water molecule has a tiny negative charge near its oxygen atom and a slight positive charge near its hydrogen atoms due to the unequal sharing of electrons.
What is the molarity of 930 mL of LiCl solution that contains 139.9 g of LiCl?
O A. 3.5 mol/L
O B. 150 mol/L
hipotle and like
O C. 3.3 mol/L
O D. 3.5 x 10-3 mol/L
Answer:
3.5 mol/L
Explanation:
First convert the 139.9g of LiCl into moles of LiCl. Don't do the sig fig rule until the very end.
Second, take 930mL of LiCl and divide it by 1000 to convert it to liters.
Third use the molarity formula which is M=mol/L and divide 0.930L by 3.300773877mol and you will get 3.549219223. This is where the sig fig rule will come into play. 3.5mol/L is a reasonable answer for this problem.
list 5 chemical properties of water??
Answer:
In the presence of a strong electron donor (strong reducing agent), water serves as an oxidizing agent. In the presence of a strong electron acceptor (strong oxidizing agent), water serves as a reducing agent. On-water reactions are a group of organic reactions that take place as an emulsion in water and have an unusual reaction rate acceleration compared with (i) the same reaction in an organic solvent, or (ii) the corresponding dry media reaction.Amphoteric nature : Water can act as both acid and base, which means that it is amphoteric in nature.Hydrolysis reaction : Water has a very strong hydrating tendency due to its dielectric constant. It dissolves many ionic compounds. Some covalent and ionic compounds can be hydrolyzed in water.Redox reactions : Electropositive elements reduce water to hydrogen molecule. Thus, water is a great source of hydrogen.is this statement true or false? the chinese knew how to produce silk by about 2700 b.c.
Answer:
its true
Explanation:
I took the test
Help please 20 points and brainliest
Answer:
For homogeneous:
Filteration, vaporization, and a reverse chemical reaction
Explanation:
1) precipitation/crystallization reactions - if one of the components can form a solid salt when the solution undergoes several factors (concentration change, temperature change, etc); separation can be done either by filtration, centrifugation, or simple decantation.
(2) chromatography - separation can be based on the mobility of the phases (liquid chromatography, gas chromatography, ion-exchange, etc.)
(3) solvent extraction - if the components are both liquid, separation based on their relative solubilities
(4) distillation - separation based on different boiling points.
(5) magnetic separation - if one of the components have magnetic properties.
(6) electrophoresis - separation of organic molecules based on the type of gel used
heterogeneous:
Main methods of separation of heterogeneous mixtures
- Magnetic separation
- Sublimation
- Decantation
Liquid-solid mixture
Liquid-liquid mixture
- Filtration
- Centrifugation
Themes of interest
The arrangement of particles is most ordered in a sample of
1.
NaCl(aq)
2.
NaCl(l)
3.
NaCl(g)
4.
NaCl(s)
PLEASE HELP
We have that the arrangement of particles of NaCl is most ordered in a sample of
NaCl(s)
i.e solid NaCl
From the question we are told
The arrangement of particles is most ordered in a sample of
1. NaCl(aq)
2. NaCl(l)
3. NaCl(g)
4. NaCl(s)
NaCl Generally known as sodium chloride or salt exist in four main states as shown
1. NaCl(aq)
2. NaCl(l)
3. NaCl(g)
4. NaCl(s)
Mow in a subject of its arrangement of particles we can see that as its state changes from gaseous through to solid it gains in form and arrangement of particles
Therefore
The arrangement of particles of NaCl is most ordered in a sample of
NaCl(s)
i.e solid NaCl
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Someone help me with this pls
Answer:
D
Explanation:
Lamps
the melting point of a substance is also the same as the:
Answer:
The melting point of a solid is the same as the freezing point of the liquid. At that temperature, the solid and liquid states of the substance are in equilibrium.
Pure gold: 1063
Pure silver: 961
List a few properties that elements in Group 1 have in common.
Answer:
The alkali metals are a group of chemical elements in the periodic table with the following physical and chemical properties:
shiny.
soft.
silvery.
highly reactive at standard temperature and pressure.
readily lose their outermost electron to form cations with a charge of +1.
Explanation:
have a great day
Energy is released into the cell by
Answer:
cellular respiration
Explanation:
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¿Estás de acuerdo con que las industrias petroleas exploten petróleo en zonas de reservas naturales?
Answer:
si estoy de acuerdo cien por ciento
I will make you brainless answer this 1 Question !
Direction: Answer the missing word
Answer: This means that the color of light with a higher frequency will have a lower wavelength and valence electron energy level.
Explanation:
What direction would this plate move? (the plate is gray in color)
options:
from West to East
from East to West
from South to North
from North to South
Answer:
from south to north thats what it look like
Explanation:
Is density a characteristic property of water?
"Density is a characteristic property of water because the density of any sample of water (at the same temperature) is always the same. The density is 1 g/cm3." - Mazza