Answer: Sodium is made up of lots of salt.
Explanation:
Eating a lot of salt can cause your body to retain more water, which can show up on the scale as extra pounds. But we're not just talking about water weight here. High salt diets appear to be linked to higher body fat in particular, the kind of fat that accumulates around your middle.
What are the reasons of greenhouse effect?
Answer:
Explanation:
Causes of Greenhouse Effect
Burning of Fossil Fuels. Fossil fuels are an important part of our lives. Deforestation. Plants and trees take in carbon dioxide and release oxygen.Farming.Industrial Waste and Landfills.Global Warming.Depletion of Ozone Layer.Smog and Air Pollution.Acidification of Water Bodies.
What type of volume is solid
Answer:
Fixed Volume
Explanation:
Solids have a fixed shape and occupy a fixed volume.Because the particles in liquids are very close together barely further apart than in solids, liquids do not easily compress, so their volume is fixed. Gases can also flow, so occupy the shape of their whole container. They do not have a fixed shape.
Calculate the density of a 20.015 g object that occupies 5.44 cm3 .
Answer:
[tex]density = \frac{mass}{volume} \\ \\ density = \frac{20.015}{5.44} \\ \\ { \boxed{ \boxed{density = 3.679 \: g {cm}^{ - 3} }}}[/tex]
El desplazamiento de la Tierra alrededor del Sol se conoce como
Answer:
Hola Amigas y Amigos
Explanation:
La Tierra gira alrededor de su eje, al igual que una peonza gira alrededor de su eje. Este movimiento giratorio se llama rotación de la Tierra. Al mismo tiempo que la Tierra gira sobre su eje, también orbita o gira alrededor del Sol. Este movimiento se llama revolución.
¡¡Espero que esto ayude!!
iiTen un día maravilloso!!
Which is true about dissolving a polar substance in water?
The solvent particles are all nonpolar molecules.
The solute particles are carried into the solution.
The solute particles have no attraction for the solvent molecules.
The solute particles are very different from the solvent molecules.
Answer: The best answer is "The solute particles are carried into solution."
Explanation: I saw "best" because I don't know how to interpret "carried into solution." Does this refer to some micro-critter putting them into wheelbarrows? But it is better than the other options. Water (the solvent particles) are all polar. The solute (stuff being dissolved) DOES have an attraction for the solvebt (water), since water is also polar. The solute particles are very different: possible, but irrwelevant. As long as they are polar, I don't care what they look like.
None of the statements are true about dissolving a polar substance in water.
What happens when a polar substance is dissolved in water?When a polar substance is dissolved in water, the solute particles get surrounded by the water molecules to form hydration shells because of strong electrostatic interactions between the polar solute and polar water molecules. This process is called solvation or hydration.
The dissolution of a polar substance in water breaks the intermolecular forces within the solute particles that leads to the development of new forces between the solute and solvent particles.
However, the solute particles have attraction for the solvent molecules. Water being a polar solvent dissolves only polar compounds, but not dissolve nonpolar compounds because of lack of strong interactions between nonpolar molecules and water to overcome the cohesive forces among nonpolar molecules.
Therefore, none of the statements are true about dissolving a polar substance in water.
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All work stations and apparatuses must be ____ at the end of the lab experiment or work day.
a. destroyed by fire. b. exchanged for new
c. cleaned
d. disposed of
PLZZZZZZZZZZZZZZ HELP FAST
Answer:
Choice 3.
Explanation:
Higher temperature leads to higher avg kinetic energy so you can use POE to eliminate options 2 and 4. Since the temperature increases, the molecules will move faster and that would make less space between particles so you can eliminate choice 1. You wouldn't need to look at the volume choices and know the answer is choice 3.
At the end of an experiment, a scientist ___ or ____ his/her hypothesis.
Supports, proves
Proves, rejects
Supports, rejects
Disproves, proves
El agua de lluvia tiene un pH de 4,00. Calcule su concentración de ion hidrógeno en mol/litro. Explique por qué el agua es ácida en lugar de neutra.
How do electrons in the same atom differ?
Answer:
The central structure of an atom is the nucleus, which contains protons and neutrons. This nucleus is surrounded by electrons. Although these electrons all have the same charge and the same mass, each electron in an atom has a different amount of energy. ... Electrons that have higher energy are found further away.
Explanation:
What conditions might cause a
scientist to modify
or revise a
hypothesis
Answer:
Upon analysis of the results, a hypothesis can be rejected or modified, but it can never be proven to be correct 100 percent of the time. For example, relativity has been tested many times, so it is generally accepted as true, but there could be an instance, which has not been encountered, where it is not true.
Explanation:
constraints of a crane
Answer:
The crane should have an electromagnet attached to its arm. The electromagnet: should have a soft iron core made from a bundle of short lengths of iron wire, must be strong enough to pick up several steel paperclips, nails or coins. Work on your own. This task will be assessed.
Explanation:
Which of these is a
PHYSICAL change?
A.
water freezes
В.
something burns
(Only for that “change” guy nobody else answers it except him)
Answer:
A
Explanation:
The answer is A
this also need to be 20 characters
Answer:
A. water freezes
Explanation:
i wanted to answer sorry
Substances have more kinetic energy in the _______ state than in the _______ state.
Answer:
Substances have more kinetic energy in the gas state than in the Solid state.
Gas have more kinetic energy as it flows from here and there.It flows really fast as it have less space between the molecules
Solids have less Kinetic energy as it is hard and can't flow so easily like gas . It has tightly packed molecules
write SI unit of force, power and pressure. obtain the fundamental units involved in each.
SI unit of
force- Newton
power- watt
pressure- Pascal
fundamentals units
force - mass
power - time
pressure- length
hope this will help you if then make me brainliest
Aluminum is more reactive than carbon.Use this fact to explain why tin has been used by humans for longer than pure aluminium.
Answer:
aluminium is more reactive than carbon. carbon is used to displace less reactive metals from their compounds. this happens since the carbon reacts with the other substance(s) in the compound, and the less reactive metal does not.
Answer:
Explanation: aluminium is more reactive than carbon. carbon is used to displace less reactive metals from their compounds. this happens since the carbon reacts with the other substance(s) in the compound, and the less reactive metal does not.It is highly reactive, though the metal is protected by a surface layer of inert transparent oxide (Al2O3) that forms rapidly in air, providing excellent corrosion resistance.
is a molecule?
А.
a substance made completely of the same type of
atoms that are NOT chemically bonded together
B.
the smallest part of a substance that is still that
substance with atoms chemically bonded together
(1st gets it right wins a burrito)
Answer:
B. the smallest part of a substance that is still that substance with atoms chemically bonded together
Explanation:
Molecules are the small part of a substance with the atoms that are chemically bonded together. Hence, option (B) is the correct answer.
Write the merits and demerits of Mendeleev periodic table in points and explain each of them in short
Answer:
merits of mendeleev periodic table are:
it was first scientific and systamatic study of different element.there were may gaps for in discovered elements.After their discovery the got their proper place in table.with the help of mendeleev periodic table , properties of several elements were studied correctly.demerits of mendeleev periodic table
it could not arrange hydrogen as it shows the property of both alkali and halogens.it could not arrange isotopes because they have different atomic weight but same atomic number.it could not arrange Lanthanides and Actinides.hope these points helped you
need more points then comment it .
Crystallization is used for separate the mixture?
option
1. sand and water
2. salt and water
3. sand and camphor
4. cream and milk
Please help me to find it out
Answer:
when the solution is heated and reaches its saturation point thus starts forming crystals thus crystals starts forming hence crystallisation takes place
Answer:
salt and water
EXPLANATION:Stir salt into boiling hot water until no more salt will dissolve (crystals start to appear at the bottom of the container). ...
fog forma when vapor changes to the what state of matter
George Washington yugg
A scientist is working in a lab and accidentally combines two liquids that quickly form a solution. Which process could be used to separate the two liquids?
Answer:
Distillation
Explanation:
The method of distillation can be used to separate the two liquids, if their boiling point is known. The liquid with lower boiling point will be evaporated and its vapours will be captured, while the liquid with higher boiling point will remail in the container in the liquid state.
The process that could be used to separate the two liquids is heating the liquids and letting one boil away first. The correct option is A.
What is liquid?The liquid is one of the states of matter. The liquid has molecules that are nearer than gas. The liquid does not have a specific shape and size. They acquire the shape of the container in which they are poured.
When the liquid is boiling and the molecules of the liquid convert into vapor. The molecules of liquid go far away from each other. When the temperature increased, boiling happened. The process will be heating the liquids and letting one boil away first.
Thus, the correct option is A. heating the liquids and letting one boil away first.
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The question is incomplete. Your most probably complete question is given below:
heating the liquids and letting one boil away first
passing the liquids through a filter to collect one of them
collecting one of the liquids with a spoon
waiting for the two liquids to separate
mearling.
the flow of water
that moves below
the surface
the flow of water
Explanation:
it's actually b)
Click on the image that most accurately represents a pure
compound.
Corre
Incor
Which statement accurately describes test tubes and beakers?
A.Beakers and test tubes both have rounded bottoms.
B.Test tubes are better for transferring liquids than beakers.
C.Beakers have liquid volume (mL) markings on the side of them; test tubes are unmarked.
D.Beakers can be held over a flame; test tubes cannot.
Beakers are flat bottom laboratory glassware that can be used to hold liquid in the laboratory. A test tube is a laboratory glassware that is unmarked and can be used to heat a liquid over a flame.
The correct answer is option C: Beakers have liquid volume (mL) markings on the side of them; test tubes are unmarked.
Several glassware are very useful in the laboratory especially when dealing with liquids.
Two among these important glassware are beakers and test tubes. A beaker is mostly used to hold liquids while a test tube is used to both hold and heat liquids if need be during a laboratory experiment.
Beakers are graduated by the side while test tubes are unmarked.
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a cheetah has been clocked at 112 km/hr. what is this speed in m/s?
Answer:
31.1111
Explanation:
should be this if not sorry
32. List three examples of substances. Explain why each
is a substance. (3.1)
Answer: Chemical X H3 and f1
Explanation:
All alkalis are bases but all bases are not alkalis, why ?
Answer:
Bases may either be soluble or insoluble in water, all alkalis are bases because they will all neutralize acids, but not all bases are alkalis because not all bases will dissolve in water.
Explanation:
hope it is helpful for youkeep smilingThe first person to use the term "atom" was _____.
Aristotle
the Egyptians
Dalton
Democritus
Answer:
The first person to use the term "atom" was Democritus.
Answer:
Democritus
Explanation:
in 1 to 2 sentences explain why a structural formulas are good for depicting polymers
Answer:
they explain the properties and structure of the compound which empirical molecular formulars cannot explain
The structural formulas are good for depicting polymers because polymers are the chemical compounds attached to the long chain with ac other which is impossible to represent other than the structural formula.
What are structural formulas?The structural formulas are the graphic representation or diagrammatical representation of the structure of any chemical formula in organic and inorganic chemistry they are mostly used.
In Polymers, they are long chains of chemicals compound can be shown diagrammatically or graphically to understand the attachment t of the bonds within them which signifies the physical properties too.
Therefore, polymers are the chemical compounds attached to the long chain with ac other which is impossible to represent other than the structural formula which is why structural formulas are good for depicting polymers.
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HELP PLEASE ASAP
5. Using the Periodic Table below, which statement is NOT true? *
1 point
Captionless Image
Aluminum (Al) and Indium (In) are in the same family.
Sodium (Na) and Sulfur (S) are in the same period.
Aluminum (Al) has similar properties to Indium (In).
Sulfur (S) has similar properties to Sodium (Na).
Answer:
d
Explanation:
Aluminium and Indian are in the same group/family
Sodium and Sulfer are in the same period
Elements of the same family have similar properties
Since sulfur and sodium aren't in the same family they dont share properties
