A student is trying to dissolve 20 grams of sugar in a beaker containing 250 milliliters of water at room temperature. What can the student do to make the sugar dissolve faster in the water?
Answers
Answer:
They can warm up the water. Sugar dissolves much faster in warm/hot water.
A perfect example of this is when you put sugar in your hot coffee/tea -> it will dissolve almost immediately. If you put sugar in cold water, you will have to stir it for quite some time before it dissolves.
Related Questions
What is the name given to this group of elements?
a.
halogens
c.
transition metals
b.
alkali metals
d.
noble gases
Answers
Answer: The answer is A. Halogens
Explanation:
I hope this helps you :)
Ill give brainliest and a 5 star review for the best answer Do you think your town or neighborhood has an ecosystem? If you don’t think so, explain why not. If you do think so, what are the producers, consumers, and decomposers in the ecosystem? What roles do humans play in this ecosystem?
Answers
Answer:
it depends if you live by a lake yes fish,bigger fish,biggest fish,then humans eat them. But if not then no ecosystem without food and animals
Explanation:
factttttttttttssss
What information does the periodic table give you?
Answers
The periodic table contains information about each of the known elements. It includes the name of each element, its atomic number, its atomic mass and its chemical symbol.
The periodic table is divided using groups (columns) and periods (rows).
Each specific group or period has a specific pattern in the elements.
The modern periodic table is arranged in order of increasing atomic number.
I’m not really sure what information what you were asking for but I hope this helps..
The modern periodic table was created by Dmitri Mendeleev with the main goal of showing rows and columns with a logic arrangement of chemical elements.
In each column, the groups, the elements have the same number of electrons in the outermost shells. While the rows are called periods or series.
write a short story using the characteristics of the subatomic particles and their locations in the atom. For example, you need a positive character, a neutral character, and a negative character. You need two different locations. One to be the center location of the story and the other to be outside the center. At a minimum you should have at least 1 paragraph with about 5 sentences. Make sure that you use complete sentences.
Make sure it is school appropriate!!
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explain how deep ocean currents form.
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Answer:
Deep ocean currents (also known as Thermohaline Circulation) are caused by: The sinking and transport of large masses of cool water gives rise to the thermohaline circulation, which is driven by density gradients due to variations in temperature and salinity. The earth's rotation also influences deep ocean currents.
Which statement is a hypothesis?
A. If an earthworm is given a choice, it will move toward darkness rather than light.
B. Most of the earthworms moved to the shaded area during the experiment.
C. The earthworms must all be the same species.
D. Do earthworms prefer bright light or darkness?
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Which option is an example of a chemical property?
melting point
density
ability to decompose
color
Answers
The ability to decompose
Explanation:
A property is a chemical property when it changes the chemical structure of a substance after a reaction.
Density and color are both physical properties.
Even though melting point may seem like a chemical property, when something melts, only the physical state changes, and the chemical structure does not change, and therefore, is a physical property.
The ability to decompose is a chemical property. When something decomposes, the chemical structure of many molecules change, and therefore, is classified as a chemical property.
Separating Mixtures Checkpoint ( giving brainly )
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Answer:
evaporation
Explanation:
What is the name of this molecule?
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Answer:
Pentane
Explanation:
Answer:
Hexane
Explanation:
alkane
single bonds and saturated hydrocarbon
the formula is C6H14
most cases of cancers are caused by
a. mutation
b. radiation
c. tumors
d. drugs
Answers
Answer:
mutation
Explanation:
a mutation in the genes causes cancer cells to reproduce and infect others when it should kill itself off immediately
HELP PLS 5 MINUTES
Which statement best compares competition, cooperation, and predation between two organisms?
Cooperation is a positive interaction between the two organisms, and predation and competition result in a negative interaction for at least one organism.
Cooperation and competition are positive interactions between the two organisms, and predation results in a negative interaction for at least one organism.
Cooperation and predation are negative interactions between the two organisms, and competition results in a positive interaction for at least one organism.\
Cooperation results in a negative interaction for at least one organism, and competition and predation are positive interactions between the two
Answers
Answer: Its the First One
Cooperation is a positive interaction between the two organisms, and predation and competition result in a negative interaction for at least one organism.
Explanation:
predation is preying on the other so its negative for at least one of them.
competition is fighting so its negative for at least one of them.
Cooperation makes them help each other so its positive.
Answer: predation is preying on the other so its negative for at least one of them.
competition is fighting so its negative for at least one of them.
Cooperation makes them help each other so its positive.
Why do you think it’s useful for scientists to classify matter? In other words, why do you think scientists need to identify something as a pure substance? Why do you think they need to know if something is a compound or an element?
Answers
Answer:
They need to know
Explanation:
Because if we didn't know that something was a compound of an element we could either blow ourselves up when we are mixing them or when we are looking for something bad between the compound and we don't know its a compound how do we fix it
Classifying substances as elements or compounds helps us to understand their properties.
Matter is anything that has mass and occupy space. There are several substances in the universe and all of them are composed of matter. It is necessary to classify matter for reference purposes. When we classify matter then it is possible to refer to substances under specific classes.
A pure substance contains only one kind of matter. It is necessary to classify something as a pure substance so that it is we can know if it contains one type of matter or different types of matter.
It is necessary for scientists to classify something as element or compound in order to understand its properties. Elements and compounds are pure substances.
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Which body system carries nutrients to the cells of the body?Answer options with 5 optionsA.circulatory systemB.digestive systemC.muscular system. D respiratory systemE.skeletal system
Answers
Answer:A. Circulatory system
Explanation:
After food get digesting the The nutrients gets transported to cells by the blood stream.
1. Using D10W and a vial of NaCl 4 mEq/mL, how many mL of NaCl are needed to prepare 250 mL of a
D10/NS solution?
a. 4.8mL
b. 9.6ml
c. 19.6mL
d. 154mL
Answers
To prepare 250 mL of a D10/NS solution using D10W and a vial of NaCl 4 mEq/mL, you would need 9.6 mL of NaCl. Normal saline (NS) contains 154 mEq/L of sodium chloride (NaCl). To prepare 250 mL of NS, you would need 250 mL * (154 mEq/L) = 38500 mEq of NaCl. Since the vial of NaCl contains 4 mEq/mL, you would need 38500 mEq / (4 mEq/mL) = 9625 mL = 9.6 mL of NaCl. So the correct answer is b. 9.6ml.
Which term describes the conversion of substances into different substances?
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chemical reaction, a process in which one or more substances, the reactants, are converted to one or more different substances, the products. Substances are either chemical elements or compounds. A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products.
Explanation:
MARK ME AS A BRAINLIST PLZ
The term which best describes the conversion of substances into different substances is a: chemical reaction.
A substance can be defined as a specific kind of matter that has definite or uniform properties.
In Science, there are two (2) main types of substance and these include:
An organic substance An inorganic substance.A chemical reaction can be defined as a chemical process which involves the continuous conversion (transformation) and rearrangement of either the ionic, atomic or molecular structure of a substance, especially through the breakdown and formation of chemical bonds, in order to form (produce) a different substance.
In conclusion, a chemical reaction involves the conversion of substances into different substances.
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Question This is a Science Test 15 POINTS OR MORE POINTS!
The following picture contains four beakers with four different colored solutions, light blue to dark blue. Which solution is the most concentrated?
A. the second solution from the left
B. the first solution (left-most)
C. the fourth solution from the left (right-most)
D. the third solution from the left
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Answer:
darker means more concentrated!!
the answer is d
Explanation:
EX:the more color you put in frosting the darker it gets
What was the low temperature for hurricane Katrina?
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Answer: 90 degrees F
Explanation:
Compared to other stars we observe, the Sun appears bigger and brighter because:
A. It is visible at night
B. It is much closer to Earth
C. It has more mass
D. It is older
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Answer:
Compared to other stars we observe, the Sun appears bigger and brighter because it is much closer to earth.
Objects closer to earth appear to be much bigger and brighter.
Let me know if this helps!
Answer:
B
Explanation:
The Sun is 93 million miles away. Other stars are light-years away. With this in mind, we orbit the sun, meaning that we are close enough to be within its gravitational field.
Hope this helps. Have a nice day.
For the following reaction:
CaO(s) + CO2(g) ⇄ CaCO3(s) ΔH = -178.5 kJ
Which of the following changes would increase the rate of the forward reaction?
Add CaO
Remove CaO
Add CO2
Remove CO2
Add CaCO3
Remove CaCO3
Increase temperature
Decrease temperature
Increase pressure
Decrease pressure
Answers
The concept Le Chatelier's principle is used here to determine the effect of change of concentration, pressure and temperature on the state of equilibrium.
What is Le Chatelier's principle?According to Le Chatelier's principle, If a system in equilibrium is subjected to a change in concentration, pressure or temperature the equilibrium shifts in the direction that tends to reduce the effect of the change.
Here adding CaO increases the rate of forward reaction. If the concentration of any reacting species is increased, the equilibrium will shift in the forward direction.
The given reaction is exothermic in forward direction. So the increase of temperature shift the equilibrium to the backward direction and the decrease in temperature shift the equilibrium to the forward direction.
Here increasing pressure will shift the equilibrium to the forward direction accompanied by a decrease in the number of moles.
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there can yall do your thing pls
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What happened when the two substances were combined together in the cup? (highlight one)
The substances changed into different substances.
The substances did not change into different substances.
I am not sure if the substances changed into different substances.
Explain your answer using evidence from the Sim.
Answers
Based on evidence from Sim, when two substances were combined they did not change into different substances.
Here the word Sim is used to describe the process simulation. Simulation is defined as when two substances combined they do not change into different substances.
They just combine together and form a new substance.
Let us understand it as the first substance is liquid and the second substance is solid then when we combine both of them they form a new mixture but do not change their property.
The mixture is still liquid but it also has some properties of solid substance.
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The substances did not change into different substances.
Based on the information provided in the question, there is no evidence or indication of any chemical reaction or change in the substances when they were combined in the cup. The question does not mention any observations or effects that would suggest a chemical transformation.
If there were a chemical reaction or change, it would typically be accompanied by observable signs such as color change, gas production, temperature change, or formation of a precipitate. However, since the question does not provide any evidence or observations of such changes, we can conclude that the substances did not undergo any chemical transformation when combined.
It is important to note that without additional information or details about the substances and their behavior, it is not possible to make definitive conclusions. However, based on the given information, the most reasonable conclusion is that the substances remained unchanged when combined in the cup.
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The rising magma that may result from this type of plate movement may produce
HELP
Answers
Answer:
Tectonic plates
Explanation:
How does mercury find its way into our ecosystems?
a.) Found in paints
b.) Found in solder joints of copper
c.) Burning coal
d.) Insulation in older houses
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What type of person studies and collects data on the weather?
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Match the term to its definition (Lessons 6.03, 6.04 and 6.05)
(i can't fit this all without confusion)
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Answer: the first paragraph is rain forest biome and the 2nd one is arctic tundra biome and finally the last paragraph is ocean or marine biome
Explanation:
rain forests have warm temperatures and include alot of animals and plants , artctic tundra biome includes cold temperatures ice stuff and all that and ocean or marine biome is pretty much just the ocean with seals , whales and marine life yk.
what is a water cycle? with explanation please I'm doing research.
Answers
Answer:
a cycle of water that circulates between earth's oecans
Explanation:
hope that's helps
Answer:
The water cycle, also known as the hydrologic cycle or the hydrological cycle, describes the continuous movement of water on, above and below the surface of the Earth. the cycle of processes by which water circulates between the earth's oceans, atmosphere, and land, involving precipitation as rain and snow, drainage in streams and rivers, and return to the atmosphere by evaporation and transpiration.
Explanation:
Can someone verify this for me? It’s on the photo!!
Answers
Answer: The answer would be D
Glass
Explanation: Good luck!
Good luck on it : )
Organisms in the abyss are very different from the surface organisms we live with. What factor listed below is NOT a reason for this?
A; Temperature is much lower in the abyss
B; Sunlight does not reach to the abyss
C; Organisms in the abyss are aliens
D; Pressure is very high in the abyss
Answers
Answer:
The answer is C
Explanation:
Good luck!
Answer:
llega al abismo C; Los organismos en el abismo son extraterrestres
Explanation:
Please write an introduction for a SHE task of Fire-Stick Farming.
Answers
Fire stick Managing the environment through farming Aboriginal people routinely burned grass to minimise fuel and promote new growth in order to attract grazing animals for hunting.
Why is farming important?Among the various ways that agriculture has an impact on society are the provision of food, habitat, and employment opportunities; the provision of raw materials for food and other goods; and the development of robust economies through commerce.
Why is farming beneficial to the environment?A large number of species use pasture and crops as both a habitat and a source of food, making up around 50% of the planet's livable land. Sustainable management of agricultural operations has the potential to safeguard watersheds, restore significant habitats, and improve the quality of the soil and water supply.
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What substances can be released in a volcanic eruption