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? a. decrease the temperature of the water b.use larger pieces c.stir rapidly d.use less water

Answers

Answer 1

Answer:

C. Stir rapidly


Related Questions

Which statement best describes the relationship between changes in air pressure and wind speeds?

Options:
A. When a high- and a low-pressure air mass are far apart, air moves slowly from high to low pressure.

B. When a high- and a low-pressure air mass are far apart, air moves quickly from low to high pressure.

C. When a high- and a low-pressure air mass are close together, air moves slowly from high to low pressure.

D. When a high- and a low-pressure air mass are far apart, air moves quickly from high to low pressure.

Answers

Answer:

D is the right answer

D is the right answer

How is a lunar eclipse similar to a solar eclipse? How are they different?

Answers

Answer:

they moon and sun are a factor in both of them

Explanation:

Answer:

From our perspective on Earth, two types of eclipses occur: lunar, the blocking of the Moon by Earth's shadow, and solar, the obstruction of the Sun by the Moon. When the Moon passes between Sun and Earth, the lunar shadow is seen as a solar eclipse on Earth. Also they are similar by An eclipse occurs when one celestial object obscures another celestial object. In the case of a solar eclipse, the moon moves between the Earth and the sun, thus obscuring the sun. A lunar eclipse occurs when the Earth moves directly between the sun and the moon. Either type of eclipse can be total or partial.

Explanation:

how is metal alloy a solution?

Answers

Answer:

Unlike pure metals, most alloys do not have a single melting point; rather, they have a melting range in which the substance is a mixture of solid and liquid.

Explanation:

Please help on my science not sure what to put it under but here's the picture

Answers

Answer:

How we can use images to promote and communicate science ... the cliché, “a picture tells a thousand words”, but there is real value in ... Images help us learn, images grab attention, images explain tough ... at BioMed Central, one thing I've realised is how vital images are in my role. ... Here's an example:.

Explanation:

What does the term solar power mean?

Answers

Explanation:

Power obtained by harnessing the energy of the suns rays

which temperature is warmest?

30 C
273 K
0 C
32 F

Answers

Answer:

the answer is 30 C

Explanation:

hope this helps

First change each temperate scale to degree Celsius
30⁰C
0⁰C
0⁰ C
0⁰C
So the hottest temperature degree is 30⁰C

Chemical equations must be balanced to satisfy ...?

Answers

Answer:

the law of conservation of matter.

Explanation:

I am in chem

Answer:

The law of conservation of matter

Explanation:

The answer is correct because I had the same question in my studies

Can I get brainliest please

If my measurement is 2.34 cm and the ACTUAL value is 2.35 cm, is my measurement accurate?

Answers

With uncertainty it is accurate has like a .001 percent difference

The diagram below represents a beaker of water being heated by a flame. The arrows represent heat transfer occurring in the beaker.
Which process is represented by the arrows in the diagram?
1. condensation
2. conduction
3. convection
4. radiation

Answers

Answer:

condensation

Explanation:

Conduction is not condensation

Do you think a moving skateboard has energy? Why or why not?
PLEASEEEEEE HURRY

Answers

Answer:

"Yes," a moving skateboard has energy.

When the skater seems to be in motion or throughout a movement, the potential energy converts itself into the kinetic form of energy, and then it becomes potential energy again.

Furthermore, somewhere after every movement, the same skateboarder was around a similar height, — in other words thus every time it is equally powerful.

The response is thus the right one.

Explanation:

Yes, every object in motion has energy.

Which definition is correct?

a physical change creates a new substance because bonds are broken or formed
a physical change can happen without changing any characteristics of the substance
a chemical change occurs when the substance remains the same but the shape, or other physical characteristics change
a chemical change produces a new substance by breaking and forming new bonds

Answers

Answer:

last one is correct

Explanation:

bcoz when a reaction takes place there is the formation of new products with the help of old one .

What is the charge on the Cr in Cr2O72-

Answers

Answer:

+6.

Explanation:

So, a chromium atom here has an oxidation number of +6.

In the dichromate ion, the oxidation number of chromium is+6. The sum of the oxidation numbers in Cr2O72-, a polyatomic ion, is -2, the charge of the ion.

help me with this I only have one more
1156 g/L
= ________ kg/mL

Answers

The Answer is 0.001156.

To convert g/L to kg/mL, we need to divide the value of g/L by 1000. Therefore:
1156 g/L = 1.156 kg/L
Since 1 L is equal to 1000 mL, we can convert kg/L to kg/mL by dividing by 1000:
1.156 kg/L = 1.156/1000 kg/mL
1.156/1000 kg/mL = 0.001156 kg/mL
Therefore, 1156 g/L is equal to 0.001156 kg/mL.

Select all of the statements that are true about the experiment.
Hints
a.
Hydrogen gas is a product of the reaction between zinc and hydrochloric acid.

b.
No chemical reaction is taking place.

c.
Hydrogen gas is soluble in water.

d.
This method uses the displacement of water in order to collect gas.

e.
Hydrogen gas is less dense than water.

Answers

Answer:

i think the answer is letter A

Hey is it possible that we could have some more info regarding this experiment.

Otherwise I would say A is correct Zn+2HCL-> ZnCl2 + H₂(g)

B is incorrect

C incorrect because hydrogen gas in non-polar and water is polar

D Correct although there are several different methods other than this one

E Correct this is the reason it is able to displace water.

Potassium (K) is found in Group 1. Fluorine (F) is found in Group 17. When these atoms bind, which will form the positive ion, and which will form the negative ion? Why? Hint: Refer back to the periodic table.

Answers

Answer:

The oppositely charged ions form an electrostatic attraction, which is the ionic bond. The compound potassium fluoride (KF) results, and since the potassium and fluoride ions have equal but opposite charges, the compound is neutral (but not the individual ions in the compound).

Explanation:

hope this helps i dont know if it will

help me, please!!!!!!!!!!!!

help me, please!!!!!!!!!!!!

Answers

I think it’s c because it only includes the parts of the sentence involving the building and the sentence still makes sense

What happens when two areas of air have different pressures?

Answers

It might make a tornado

You may think of changes in climate occurring as you go north or south. This climber stayed at the same latitude and went up. What explains the difference in temperature and climate between the top and bottom of Mt. Kilimanjaro? Please explain in 3-5 sentences thank you for 81 points

Answers

Answer: I'm not really sure but I think its dew to the different heights and tempura going up and down and the flow of wind.

Explanation:

Answer:

Mountains make it possible for snow to be found at the equator. Why does the temperature become colder the higher up a Mountain? Generally the climate on mountains get progressively colder with increased altitude (the higher up you go).

Explanation:

help quick............

Answers

Atomic number: 42

Chemical symbol: Molybdenum (Mo)

Number of protons: 96

Atomic mass: 96

Number of electrons: 42

Number of valence electrons: 5

Number of electrons in the n=3 shell: 42

Number of neutrons: 54

How to work out the relative mass of potassium? What is the calculation? ( explained very easily )

Answers

Answer:

39

Explanation:

Relative mass does not need to be calculated as it is listed on the periodic table. Potassium's relative atomic mass is around 39.

Relative Atomic Mass = Mass of one atom
———————————
(1/12)th Mass of one C12 atom

Jenna notices that the speed of the wind has increased throughout the day. What is causing the faster wind?

There has been no precipitation.
The difference in air pressure has decreased.
The difference in air pressure has increased.
The direction of the wind has changed to the south.

Answers

The speed of the wind has increased throughout the day as there has been no precipitation.

What is precipitation?

Precipitation is a process in which vapor of liquid changes into small droplets.

In the day time temperature of the atmosphere is high as compare to the night, so rate of precipitation is low at the day time due to which speed of the wind has increased as compare to the night time.

Hence, option (a) is correct i.e. there is no precipitation.

To know more about precipitation, visite the below link:

https://brainly.com/question/1783904

Answer: C

Explanation:

What is NOT true about genes and chromosomes?

Genese are located on chromosomes

Chromosomes are in the nucleus

A single chromosome can contain hundreds of genes

All of these are true

Answers

Let us go option by option :

1) Genes are located in chromosomes. TRUE

Chromosomes are in cell nucleus. A chromosome contains hundreds and thousands of genes. A normal have 23 pairs of chromosomes, and a total of 46.

2) Chromosomes are the in nucleus.

TRUE

Chromosome is structure found in nucleus of the cell. It is made up of protein and DNA.

3) A single Chromosome can contain hundreds of genes.

TRUE

single Chromosome can contain hundreds of tgenes.

4) All of the above

TRUE

As all the statements above are true. The correct option is 4.

Answer:

all of them are true

Explanation:

this is because chromosomes contain genetic materials and it is present in the nucleus.
Therefore, the correct option is 4) all of these are true

no problem

?What statement best describes the arrangement of the atoms in an ethylene molecule?

Answers

Answer: Two electrons are shared between each hydrogen atom and the carbon atom bonded to it, and four electrons are shared between the carbon atoms.
Two electrons are shared between each hydrogen atom and the carbon atom bonded to it, and four electrons are shared between the carbon atoms.

help


Nicole has 2 glasses on the counter: one of water and one of sugar-water. She is baking a cake and needs to use the sugar-water for the glaze. Both glasses look identical, but one contains a mixture and the other contains a compound.

Is sugar-water a mixture or a compound? Define mixtures and compounds, and explain how, without tasting it, Nicole can test to make sure she is using the sugar-water in the glaze.

Answers

Answer:

sugar-water is a mixture not a compound.(homogeneous mixture.)

Explanation:

Compounds are substances formed by the chemical combination of two or more elements. Mixtures are substances formed by physically mixing two or more substances together.

The solution of sugar in water is considered a mixture not a compound because the particles of sugar and water are not completely dissolve nor mixed in a fixed proportion or ratio. hope this helped :)

Explain how, without tasting it, Nicole can test to make sure she is using the sugar-water in the glaze.

Answer: Nicole can take a small amount of sample from both of the glasses, she can place the samples in two separate containers and leave them out in the sun, so that the water gets evaporated. One of the two containers will contain a residue of sugar. The one containing the sugar residue, is the sugar-water solution.

Why does an object with less mass move faster after a collision with an object with more mass?

Answers

Answer:

if two objects of different mass have the same momentum, then the object with the least mass has a greater velocity

The greater the force that is applied to an object of a given mass, the more the object will accelerate

Explanation:

For example, doubling the mass of an object results in only half as much acceleration for the same amount of force

Which statement best describes how energy and matter move in a wave?
A
A wave transports energy without transporting matter.

B
A wave transports matter without transporting energy.

C
Neither energy nor matter is transported by a wave.

Answers

Answer:

A wave e transports energy without transporting matter

Answer:

the answer is A. a wave transpory energy without transporting matter

HELP ASAP ITS 8th GRADE SCIENCE BUT IT DOESN'T HAVE THAT OPTION
The graph shows the kinetic energy (KE) and potential energy (PE) of a bouncing ball over a period of 9 seconds. Use the graph to answer question 2-3.

2. When does the ball have the most kinetic energy?


3. What statement best describes what happens to the total mechanical energy of the ball as it bounces?



please and thank you <333

HELP ASAP ITS 8th GRADE SCIENCE BUT IT DOESN'T HAVE THAT OPTIONThe graph shows the kinetic energy (KE)

Answers

Answer:

2. c

3. a

Explanation:

for answer 3 kenetic energy does not change and will stay the same. and for answer 2 after the second bounce it is already slower than both beginning and end. the beginning is just when its speeding up so its bounce one. which is c.

Answer:

the answer for qes 2 is c

the answer for qes 3 is a

4. Which of the following is a solution? *

Answers

Answer:

chemistry- A homogeneous mixture

a solution is also something to solve a problem

as
d
d
f
f
g

hh ⃤
⃤ ⃤ ⃤ ⃤ ⃤

An increase in the movements of particles in a substance is associated with an increase in energy

Answers

Answer: More atoms and higher temperature mean more thermal energy.

Explanation: The greater the motion of particles, the higher a substance's temperature and thermal energy. A substance's total thermal energy depends on its temperature, number of atoms, and physical state.

The greater the motion of the particles, the more thermal heat there is (increase in temperature).

Explain how thinking about chemicals at the atomic and molecular scale can help to explain observable phenomena, such as the changes you see when you etch copper.

Answers

Not a straight up answer, but moreover to help you get it: (Circuit Boards)

Aside from the tasks it performs, perhaps the most important function of a circuit board is providing a way to integrate the electronics for a device in a compact space. A PCB allows components to be correctly connected to a power source while being safely insulated. Also, circuit boards are less expensive than other options because they can be designed with digital design tools and manufactured in high volume using factory automation.

Partially straight up, helping you  get the answer: (Copper Chloride)

Copper(II) chloride is the chemical compound with the chemical formula CuCl 2. This is a light brown solid, which slowly absorbs moisture to form a blue-green dihydrate.

Etching helps us to see the structure of the atoms of copper.

What is etching?

The term etching refers to the process by which we expose the inner structure of copper. It is usually done electrically or by the use of an acid. The surface of the copper is removed and the inner structure of the copper is shown.

As such, when you etch copper, you can see the inner structure such as the arrangement of the atoms of copper and how they fit together.

As such looking through the etched copper would help you to appreciate that matter is composed of atoms.

Learn more about etching of copper:https://brainly.com/question/28190564

#SPJ1

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