Chemistry High School

Which of the following examples is a chemical property?

Answers

Answer 1
Where are the options to choose from
Answer 2

Answer:

Examples of chemical properties include flammability, toxicity, acidity, reactivity (many types), and heat of combustion. Iron, for example, combines with oxygen in the presence of water to form rust; chromium does not oxidize (Figure 2).

Explanation:

Related Questions

HELP ASAP PLEASE WILL GIVE 12 points

A. Which of the following reaction mixtures will produce
hydrogen more quickly at room temperature:

(i) zinc granules + dilute nitric acid?
(ii) zinc powder + dilute nitric acid?

B. Give an explanation of your answer to a.

C. Suggest two other methods by which the speed of
this reaction can be altered.

Answers

Answer:

zinc powder + dilute nitric acid

Decrease the temperature in Exothermic reactions (Reactions that release energy, or become hot) Add a catalyst (A substance that reduces activation energy, speeding up the reaction) Increase the concentration of reactants. Increase the concentration of catalysts

Explanation:

Brainliest?

The Statue of Liberty changing from Copper to Green is an example of...
Group of answer choices

A: Temperature Change

B: Gas Formation

C: Color Change

D: Precipitate

Answers

Answer:

answering this for points! Sorry! but its probably A OR C

Explanation:

Which organism is a producer? A:owl B:mouse C:grass D:snake please somebody help me

Answers

Answer:

I think it's C. Grass. :)

It would be C. grass

Particles of a suspension will settle while particles of a colloid do not. Why dose this happen?

Answers

Answer:

The dispersed particles are spread evenly throughout the dispersion medium, which can be a solid, liquid, or gas. Because the dispersed particles of a colloid are not as large as those of a suspension, they do not settle out upon standing.

Explanation:

If an element is very reactive, is it more likely to be found in elemental state or in a compound?

Answers

Answer:

Compound state

Explanation:

Because reactive elements mostly react immediately with other elements

true or false: the more matter a star contains,the longer it is able to shine.


Pls help fast

Answers

True because the more matter the more power

Explanation:

true ..........................

How many carbon atoms are there in a 12.5 kg sample of carbon?
step by step solution

Answers

Answer:

6.27 X 10^26 atoms

Explanation:

Write down the formula:

number of moles = mass/Ar    (Ar is atomic mass)

Ar of carbon = 12

mass = 12.5kg or 12500g

Substitue these values into the formula:

number of moles = 12,500g / 12 = 3125/3 or 1041.6

Convert this to atoms:

1 mole = 6.022 X 10^23 atoms

So, 1041.6 moles = 6.27 X 10^26 atoms

What is the temperature at 11:59 pm?

Answers

It depends on where u live mines is 28 degree
For me it was 52 degrees.

What is evolution?
1. Quick change in an organism to eat better
2. A change in the environment
3. Gradual change in the environment due to global warming
4. Gradual change of a species to be better suited for the environment

Answers

Answer:

The correct answer is option 4.

Answer:

4 Gradual change of a species to be better suited for the environment

Explanation:

A cation with a +4 charge has 26 neutrons and 18 electrons. What is the identity of the element?

Answers

mag aral wag puro brainly

Thomson concluded that .......
A- electrons must be parts of the atoms of all elements
B- Electrons are not parts of the atoms of all elements
C-None from the previous​

Answers

Answer:

A. electrons must be parts of the atoms of all elements

Why is sterilising the water rarely used in treating the sewage water?

Answers

Answer:

Sterilizing the water rarely used in treating the sewage water is described below in details.

Explanation:

Sterilization is the application of a chemical or physical system to eradicate all microorganisms, concluding comprehensive amounts of bacterial content. Heat treatment is the most relevant approach for the sterilization of waste-water that accommodates large levels of masses. well now sterilizing the water is un-usually practiced in managing the sewage water.

The table below lists the naturally occurring isotopes of element X. Calculate the average atomic mass.

Mass of isotope Relative abundance
15.33 amu 28.60%
17.26 amu 13.30%
18.11 amu 58.10%


A) 17.65 amu
B) 17.11 amu
C) 16.90 amu
D) 17.20 amu

Answers

Answer:

D

Explanation:

I think it is D

In the reaction 2CO2+ 2H2O -> C2H4 + 3O2 , the mole ratio of water to oxygen is

Answers

2 moles of water to 3 moles of oxygen. 2:3 should be your answer if you look at the coefficients

I'm gonna guess 2:3 because you have two moles of water and three moles of oxygen

explain why a nanowire can be longer than 3000nm but still be considered a metallic nanomaterial​

Answers

Answer:

A nanowire is a nanostructure, with the diameter of the order of a nanometre (10−9 meters). It can also be defined as the ratio of the length to width being greater than 1000. Alternatively, nanowires can be defined as structures that have a thickness or diameter constrained to tens of nanometers or less and an unconstrained length. At these scales, quantum mechanical effects are important—which coined the term "quantum wires". Many different types of nanowires exist, including superconducting (e.g. YBCO[1]), metallic (e.g. Ni, Pt, Au, Ag), semiconducting (e.g. silicon nanowires (SiNWs), InP, GaN) and insulating (e.g. SiO2, TiO2). Molecular nanowires are composed of repeating molecular units either organic (e.g. DNA) or inorganic (e.g. Mo6S9−xIx).

Explanation:

Hope it helps

What is the random movement and mixing of particles?
9 letters in the world the second one is “i” and the 6th “s”

Answers

Answer:

diffusion

Explanation:

Diffusion can be defined as the net movement of particles from a high concentration to a low concentration. This sounds like the most plausible word in this case.

how would you describe the forces between the particles of solids??

Answers

Solid – In a solid, the attractive forces keep the particles together tightly enough so that the particles do not move past each other. The kinetic energy of the molecule is greater than the attractive force between them, thus they are much farther apart and move freely of each other.

Answer:

Explanation:

In a solid, the attractive forces keep the particles together tightly enough so that the particles do not move past each other. ... The kinetic energy of the molecule is greater than the attractive force between them, thus they are much farther apart and move freely of each other.

i need ur help guys please. 50 pts​

Answers

Answer:

Sodium Chloride - Food flavoring, preservation and desiccation, fermentation processes, wood pulp bleaching in paper industry, buna and neoprene production in plastic industry.

Sodium Hydroxide - Bar soap and detergent production, drain cleaning, paper manufacturing, purification of bauxite ore prior aluminium production, artificial fibers production, oil refining.

Sodium Carbonate - Glass manufacturing, water softening, food additive, soap manufacturing, antiacid production.

Sodium Sulphate - Drugs for therapeutical use, wood pulp production in paper industry, soap and detergent production.

Potassium Nitrate - Fertilizer production, rocket propellant and gunpower production, wastewater treatment.

Potassium Chlorate - Oxygen-supply systems in aerospace applications.

Potassium Permanganate (VII) - Treatments of fungi and bacterial infections, wasterwater treatment and gastric irrigation.

Potassium Chloride - Hypoalkemia treatment, flavor enhancing in food.

Explanation:

Sodium Chloride - Food flavoring, preservation and desiccation, fermentation processes, wood pulp bleaching in paper industry, buna and neoprene production in plastic industry.

Sodium Hydroxide - Bar soap and detergent production, drain cleaning, paper manufacturing, purification of bauxite ore prior aluminium production, artificial fibers production, oil refining.

Sodium Carbonate - Glass manufacturing, water softening, food additive, soap manufacturing, antiacid production.

Sodium Sulphate - Drugs for therapeutical use, wood pulp production in paper industry, soap and detergent production.

Potassium Nitrate - Fertilizer production, rocket propellant and gunpower production, wastewater treatment.

Potassium Chlorate - Oxygen-supply systems in aerospace applications.

Potassium Permanganate (VII) - Treatments of fungi and bacterial infections, wasterwater treatment and gastric irrigation.

Potassium Chloride - Hypoalkemia treatment, flavor enhancing in food.

9
Which statement best describes the Bohr model of the atom?
Electrons can move freely between intermediate energy levels.
B
Electrons move around the nucleus in circular orbits:
С
Electrons emit and absorb energy at continuous wavelengths.
D Electrons are accommodated in lower energy levels.

Answers

Answer:

B.electrons move around the nucleus in circular orbits.

The Sun appears to move across the sky each day. What causes this?

A.the spinning of Earth on its axis

B. the path of the Sun around Earth

C. the production of nuclear energy by the Sun

D. the tilt of Earth on its axis​

Answers

Answer:

a

Explanation:

as the earth rotate around the sun it appears to be moving across the sky

Answer:

The answer is option A

Explanation:

From Earth, the Sun looks like it moves across the sky in the daytime and appears to disappear at night. This is because the Earth is spinning towards the east. The Earth spins about its axis, an imaginary line that runs through the middle of the Earth between the North and South poles.

Please mark me brainliest

Convert 6.24 x 10g to standard notation.

Answers

Answer:

3.45 x 10^5

Explanation:

Radiant heat is typically found

A.in empty space
B.I’m water
C.in mountains
D.in bricks

Answers

Answer:

A.in empty space

Explanation:

Radiant heat creates heath through both convection and radiation. Their purpose is to heat up an environment, aka empty space.  

what's the answer? please help​

Answers

Answer:

a usually reversible change in the physical properties of a substance, as size or shape

For example:

Freezing a liquid is a physical change.

Answer:I like bread

I like ya cut G

So that's step by step solution to get to the answer

true or false: Gravity plays an important role in the formation of stars.

Pls help fast???!!!!

Answers

Answer:

the the answer iss ( true )

Hi pls help with these questions. Will give brainliest for correct answer :)

Answers

Answer:

4

Explanation:

because those to elements link together creating amazing fractions

the seven continents used to be one huge supercontinent called Ppaonderosa, Panhandle, Pangaea, Panthalassa

Answers

Answer:

Pangaea

Explanation:

Answer:

Pangea

Explanation:

Pangaea or Pangea was a supercontinent that existed during the late Paleozoic and early Mesozoic eras. It assembled from earlier continental units approximately 335 million years ago, and it began to break apart about 175 million years ago

In your own words, explain Earth's atmosphere.

Answers

The atmosphere is the layer of gases around the Earth. It is held in place by Earth's gravity. It’s made up of oxygen, nitrogen, Corbin dioxide, water vapor, etc. greenhouse gasses are trapped up in our Earths atmosphere resulting in pollution and a worse air quality index.

Answer:

yes

Explanation:

because the atmosphere is the shield of earth

A mining crew extracted two different types of minerals from underground. Then, they transferred the same amount of energy into both minerals. Why did mineral A change while mineral B stayed the same? Explain what happened to the molecules of both minerals

Answers

Explanation:

A mining crew extracted two different types of minerals from underground. Then, they transferred the same amount of energy into both minerals. Mineral A changed and mineral B stayed the same phase because mineral B has a stronger molecular attraction than mineral A.

This image shows a...​

Answers

Answer:

I think is the last one!!!! punnet square ⬜

Look at the image below:
Mid ocean ridge
Sea towe
Marie Sedie
Osta 7m
WORM
PC
hohe materieur
Tron
Orope
thenosphere
perduta
What type of plate boundary is shown here?
convergent
divergent
transform

Answers

Answer:

Divergent

20 words

Answer:

divergent...........................

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To test the null hypothesis that there's no difference in handedness between men and women, what significance test should we use?the Chi-Square-test for Independencethe one-sample z-testChi-Square Goodness-of-fit testthe two-sample z-testTries 0/3Suppose the table below shows the responses of 626 people who filled out the survey. A diverging lens with a focal length of -14 cm is placed 12cm to the right of a converging lens with a focal length of 20 cm . An object is placed 36 cm to the left of the converging lens.a) where will the final inage be located?b) where will the image be if the doverging lens is 43 cm from the congerging lens?Ch 33 HW Problem 33.24 Constants Periodic Table Part A A diverging lens with a focal length of-14 cm is placed 12 cm to the right of a converging lens with a focal length of 20 cm An object is placed 36 cm to the left of the converging lens. Where will the final image be located? 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D) Moose and then wolf populations grow larger during cycle peaks-with enough wolves, all moose are eaten, leading to extinction for both. can you please give me the correct answer to this question? Thanks complete the statement: |a| 5 |a2| if and only if |a| Savers has an issue of preferred stock with a stated dividend of $3.85 that just sold for $87 per share. What is the bank's cost of preferred stock? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.) 10 A balloon rises 2,0000ft every 2 min which equation models the relationship between the time x and the distance from the ground y Due to the number of requirements for a successful collision, according to the collision theory, the percentage of successful collisions is extremely small. yet, chemical reactions are still observed at room temperature and some at very reasonable rates. explain between the early 1800s and today, the percentage of the population living in urban areas in the united states has changed by a factor of ___________. If some users, such as software developers, need to run certain commands as the root user in certain situations, it is best to allow them to log on to the ... A closed piston/cylinder device contains 1.2 kg of carbon dioxide (CO2) initially at 300 K and 100 kPa. The carbon dioxide is now slowly expanding in an isobaric process to a final volume of 1 m3. (c) Determine the moving boundary work in kJ done by the CO2 during the process (choose nearest value from below). Multiple Choice 32 kJ O 43 kJ 52 kJ Premium Pet Supplies has sales of $98,400. The costs of goods sold are $55,000 and the other costs are $21,000. Depreciation is $12,000 and the tax rate is 35 percent. What is the net income of the company? Humid air at 40 psia, 50oF, and 90 percent relative humidity is heated in a pipe at constant pressure to 120oF. Calculate the relative humidity at the pipe outlet and the amount of heat, in Btu/lbm dry air, required. a 25.0 l solution is made of 0.10 m acid and 0.13 m conjugate base. what mass of hno3 (mm = 63.01) in grams can the buffer absorb before one of the components is no longer present? There are two majority Christian nations in South and Southeast Asia. TrueFalse Biologists are studying elk population in a national park. 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