Chemistry High School

What is importance of thermometer?​

Answers

Answer 1
a laboratory thermometer is used to measure the boiling point and freezing point during science experiments. it is also used to measure the temperature of substances. It measures temperature ranging between -10 degree Celsius and 110 degree Celsius :)

Related Questions

Igneous rock can be changed into which type of rock through the application of heat and pressure?

A. metamorphic rock

B. foliated igneous rock

C. clastic sedimentary rock

D.non-foliated igneous rock

(Pls help me)

Answers

Answer:

A) metamorphic rock

Explanation:

Granite is an igneous rock that forms when magma cools slowly underground. When granite is exposed to heat and pressure it changes into a metamorphic rock called gneiss

Hail is an example of which type of phase change?
A) Sublimation
B) Evaporation
C) Condensation
D) Freezing

Answers

Answer:

D) freezing

Explanation:Because hail sounds like it is hard and hail comes down and it hurts because it is freezing.

The hail can be defined as the conversion of the water to the ice. Thus, hail is an example of freezing.

What is phase change?

The phase can be defined as the state of the matter. With the change in the temperature and the pressure values, the state of the matter, or the phase changes.

The hail has been the solid precipitation of the rain water. With the lowering of the temperature to the critical pressure, the water converts to ice.

The conversion of water to ice has been termed as freezing, Thus, hail is an example of freezing. Hence, option D is correct.

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How are compound, elements, and mixure different

Answers

Explanation:

Compound: a substance that is made up of more than 1 type of atom bonded together Example: H2O

Mixture: combination of two or more elements or compounds not chemicaly bonded together. example: Sugar and salt in one container

elements pure substance of an atom. Example: hydrogen

any matter that does not have a definite shape or a definite volume is an

Answers

gas. gases have no definite volume or shape.

I need help please, I will give you five stars

Answers

Answer:

The second choice i think

Explanation:

Hope it helps

Explain why the design of the bird's nest in the picture provides good insulation for the eggs.

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Answer:

First, the lining may consist of loose, smaller bits of the same materials that have been incorporated into the latticework of the nest. These finer materials are utilized to shed water, deter pests, conceal the eggs from predators, insulate, and cushion them. ... They also serve to insulate and cushion the eggs.

Explanation:

describe how changing the particles changed the atom

Answers

bonds between atoms break and new ones form and energy is either given out or taken in

Changing the particles changes the atoms by converting it to a new substance through bond change.

During a chemical reaction changes occurs in the atoms of an element due to the formation or breaking of bonds.

There is either loss or gain or sharing of atoms between two elements reacting together.

Bonds between atoms break and new ones form and energy is either given out or taken in.

This type of reaction leads to the formation of new substances made up of a new combination of atoms and a different configuration of electrons.

Therefore, because various changes occurs during a chemical reaction, changing the particles changes the atoms by converting it to a new substance through bond change.

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a 1 mL pipette delivers a measured volume of .98 mL (calculate the percentage error)

Answers

Answer:

2%

Explanation:

.98 is 98% of one and therefore they are missing 2%

Answer:

2%

Explanation:

The answer is 2%.

100-98 is 2.

how many grams are equal to 413 kg

Answers

Answer:

413,000 grams

Explanation:

Answer:

413,000

Explanation: That's because 1 kg equals to 1,000 grams.

URGENT : how do the electrostatic forces between electrons influence their orbital spin?

Answers


Oppositely charged particles attract each other, while like particles repel one another. Electrons are kept in the orbit around the nucleus by the electromagnetic force, because the nucleus in the center of the atom is positively charged and attracts the negatively charged electrons.

hope this helps

1)petroleum and natural gas are formed in the__________
2)_______ refers to the things that exists freely in nature or human use
3) during the ____ period the earth was covered with swampy forest's
4)-------- is the mixture of hydrogen, methane, carbon monoxide, and other gases
5)natural gas mainly consists of_____
6)_____are the chemicals derived from petroleum and natural gas
7) the process of refining of petroleum is carried out in refineries and is called _____
8) _____ is used to generate power and to manufacture other fuels like coke and coal tar​

Answers

1. In the remains of organisms such as plants and algae.
2. Air, peace of mind know knowleged and water
3. The Carboniferous
4. Is a colorless , odorless gass that is very flammable.

If one end of an iron bar is heated, what causes thermal energy to transfer to the other end? a radiation b conduction c heat of fusion d convection

Answers

Answer:

Option B:

Conduction

Explanation:

Conduction is the transfer of heat from one molecule to another between two solids that are in direct contact with each other. For the conduction of heat to occur, the medium involved must be solid. This is because the molecules of solids are closely packed together and they cannot freely move about. The heat flowing through them can easily be passed on from one molecule to the other until it reaches all the parts of the object. This is exactly what will happen to the iron bar. Thermal energy from one end of the bar will get transferred between the molecules of the iron bar until it reaches the other end.

Convection on the other hand involves the transfer of heat through a liquid medium.

Radiation involves teh transfer of heat in a vacuum.

Answer:

b) conduction

Explanation:

how to calculate molecular mass?

Answers

you use amount of molecules multiplied by atomic mass

How many electrons does the Ca^2+ ion possess

Answers

Answer:

18 electrons

Explanation:

Answer:

18 electrons

Explanation:

Ca has 20 electrons. Ca^2+ has 18 electrons

In what circumstance would the complete and net ionic equations for a reaction be identical?

Answers

Answer: Complete ionic equations dissociate all aqueous solutions into ions. Net ionic equations show the change that occurs in chemical reactions and do not show spectator ions that are the same in reactants and products. (b) If no spectator ions were present then complete and net ionic equations would be identical.

Explanation:

Living sustainably means living on ____—the renewable resources such as plants, animals, soil, clean air, and clean water provided by Earth's natural capital. A. Exponential growth natural income ecosystem services factors of sustainability biodiversity

Answers

Answer:

natural income

Explanation:

Living sustainably in the 21st century means coexisting with the nature. In other words, to live sustainably means to meet the needs of the human without affecting or degrading the mother nature.

In the context, living sustainably means to live from the natural income from the nature's gift to us, using their natural resources and not hurting them or exploiting them. They may be resources from the soil, plants, clean air, animals, nature's clean water,etc.

How do solve the uncertainly of a number?? plz help me

Answers

Answer:

How do solve the uncertainly of a number??

Explanation:

If you're adding or subtracting quantities with uncertainties. You add the absolute uncertainties. If you're multiplying or dividing, you add the relative uncertainties. If you're multiplying you multiply absolute uncertainties by the same factor, or do nothing to relative uncertainties.

Answer:

If you are taking a with power of a number with an certaintly ,you multiply the realtive uncertainty by number in the power .

The teacher was not in the room yet. Randy began opening containers of chemicals, touching them with his hands. His cheek itches so he rubbed it. Explain how Randy was not acting safety in the the laboratory.

I know the answer I just don’t know how to word it. Please help. Due by 11:59 tonight

Answers

Answer:

Randy went into the classroom without the teacher being present. He opened  containers of chemicals without the teacher's consent. Randy is making contact with the chemicals on his skin.

I hope this helps! I haven't done lab science in a while so I'm trying to remember the safety precautions.

Randy went into the classroom without the teacher being present and opened  containers of chemical, making contact with chemicals on skin leads to skin reaction.

So Randy should follow the lab safety rules while entering into lab.

What are the important lab safety rules?

After entering lab wear apron and gloves along with safety goggles if working with any hazardous or infectious substance.

Fully aware about the hazards of the materials, properly trained to handle lab equipment, chemicals should be adequately labelled.

Taste or smell chemicals are prohibited, never pour already stored chemicals, chemical hygiene plan should be developed for specific hazards.

Avoid to adopt un-tested and unauthorized experimentation, Clean up all chemical spill, Laboratory induction should be carried out .

Avoid storage of any edible items in the refrigerator along with lab chemicals and specimens, clean the work station after completing experiment and sterilization should be done before starting experiment.

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Express a mass of 0.056 mg in grams.
Answer in units of g.

Answers

Answer:

0.000056g

Explanation:

1 mg = 0.001 g

Or if it helps move your decimal sign over left 3 places.

a cheetah can run 112km/h over a 100-m distance. what is this speed in meters per second

Answers

First convert the 112 km/hr ratio into m/s (meters per second). To do this you multiply 112 km with 1000 m/km (since there's 1000 m in one km). You get 112000 m. Then multiply 1 hr with 60 min/hr (since there's 60 min in one hr. You get 60 min, but you want seconds, so multiply 60 min with 60 s/min to get 3600 s. There you go! Your answer is the speed of 112000m/3600s, but you can simplify that to 31.11m/s (since the answer should be in ? meters per 1 second.

Also, the "100-m-distance" part of the question is just to throw you off, because one particular speed obviously stays constant over any distance. Hope that helps :)

If the weather map above is from today’s forecast, which city is most likely to see its temperatures rise tomorrow?

Chicago

Houston

Denver

Memphis

Answers

Answer:

The awnser is chicahgo

Explanation:

Thermal radiation emitted by objects allows us to feel infrared
energy as _____

Answers

Answer:

THERMAL IMAGING

We can sense some infrared energy as heat. Some objects are so hot they also emit visible light—such as a fire does. Other objects, such as humans, are not as hot and only emit only infrared waves.

What is the difference between the dependent variable and the independent variable in an experiment?

Answers

Answer:

An independent variable is the cause. Its value is independent of other variables in your study. A dependent variable is the effect. Its value depends on changes in the independent variable

Explanation:

Variables are the factors or the numbers used as a quantity. The dependent variables are conditional, and the independent variable is the cause that affects the result.

What are dependent variables and independent variables?

The independent variable of an experiment is the data that is the cause of the experimental design. Its value and result do not depend on other factors and conditions. These values are manipulative and are set by the researcher.

The dependent variables, on the other hand, vary based on the other factors and variables and are the effect that is based on the response and the outcome of the other variables. It is the tested or the measured value.

Therefore, the independent and dependent variables differ based on cause and effect.

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(01.01 MC)
Which of the following could be considered a scientific statement

Answers

Answer:

hmmmm not sure and don't know

Explanation:

Convert 35 mL to cm3. 1 mL = 1 cm3

Answers

it’s still 35cm3
mark me brainliest

A kilometer is much greater in distance then a millimeter true or false

Answers

Answer:

true

Explanation:

Answer:

true

because if you look at a chart it will lable

kilometercentimetermillimeterand so on

How many electrons does maganese 55 have?

Answers

Answer:

Maganese 55 has 25 electrons.

Hope this helps you!

Explanation:

What is the electron configuration for an atom of tin in the ground state?

Answers

Answer:

The ground state electron configuration of ground state gaseous neutral tin is [Kr]. 4d10. 5s2. 5p2 and the term symbol is 3P0.

how can an item with a lower mass have a higher weight than an item with a higher mass?

Answers

Answer:

probs has to do with the size of the object

Explanation:

Will give Brainlest for correct answers
How is kinetic energy affected by temperature

Answers

Answer:

Temperature affects the kinetic energy in a gas the most, followed by a comparable liquid, and then a comparable solid. The higher the temperature, the higher the average kinetic energy, but the magnitude of this difference depends on the amount of motion intrinsically present within these phases

Explanation:

I just know lol

The higher the temperature, the higher the average kinetic energy, but the magnitude of this difference depends on the amount of motion intrinsically present within these phases.
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