Chemistry High School

Someone pls help me I will mark you as brain

Answers

Answer 1

Answer:

Chlorination

Explanation:

"Exposure to high volumes of chlorine gas fumes can cause serious health problems, including death."

https://water.mecc.edu/courses/ENV211/lesson14_print.htm

Related Questions

as the temperature of a gas sample at constant pressure increases, the volume of the gas will _____ and there will be _____ gas particles in the same space. the density of a gas at constant pressure therefore _____ as the temperature increases.

Answers

Answer:

Increase

Less/low number

Lessen

Explanation:

Increase > Increase in temperature cause increase in volume.

Less/low number > As volume increases the number of particles to be adjusted in the same space will be lesser than before.

Lessen> At constant pressure as increase in temperature cause increase in volume so the density will lessen due to increase in volume. Density equation is given below.

Density = mass /volume

If volume increases density will get lowered.

when washing tableware the water temperature should be:

Answers

When washing tableweare the water temperature should be warm

Give the correct order of apparatus (Crucible, Filter funnel, Test tube, Dropper, Spatula) to show the correct arrangement that can be used to prepare and investigate the nature of pH of a sample of onion solution.

Answers

Answer:

Is it Crucible,Test tube,Dropper,Filter funnel, Spatula

Explanation:

The laboratory apparatus is used to experiment with the chemicals and to hold them. To prepare and investigate the pH of the onion sample apparatus required are the crucible, test tube, dropper, filter funnel, and spatula.

What is pH?

pH is the measurement of the hydrogen or the hydroxide ion concentration in the solution to determine the alkaline or acidic nature of the substance.

The pH of the onion solution can be determined by experimenting with the help of the laboratory apparatus and reagents. A crucible is a container that can withstand high temperatures.

A test tube is a glassware used to hold the substance or chemical in it. Similarly, a dropper is used to draw liquids. The filter funnel separates the filtrate or the solution. A spatula can be used to remove or add the substance.

Therefore, the correct order of the apparatus is the crucible, test tube, dropper, filter funnel, and spatula.

Learn more about pH here:

https://brainly.com/question/16002621

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Someone pls help me

Answers

Answer:

A. 4 cm, 40 mm

B. 5.5 cm, 50 mm

C. 8.8cm, 80 mm

D. 8.2 cm, 82 mm

E. 9.5cm, 95 mm

Explanation:

NB: 1 cm = 10 mm

is CuCl2 polar or nonpolar ?

Answers

CuCl2 is a polar covalent bond.

pls help with this !!!!!!

Answers

Answer:

thank you for the update on

Answer:

es la dos

Explanation:

raw or undercooked shellfish may be contaminated with what type(s) of bacteria
vibrio vulnificus
salmonella
vibrio vulnificus and vibrio parahaemolyticus

Answers

Answer:

vibrio vulnificus and vibrio

Explanation:

Answer:

vibrio vulnificus and vibrio parahaemolyticus

write the solubility equilibrium for the slightly soluble salt caf2.

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Answer: write the solubility equilibrium and the solubility-product constant expression for the slightly soluble salt CaF2 CaF2 (s) <---> Ca2+ (aq) + 2F- (aq) Ksp=[Ca2+][F-]2.

Explanation:

How do I know if a reaction is spontainous or not?

Answers

Answer:

i dont care to you

Explanation:

cause you are tuyo

the answer is this

Draw the circuit symbol that would represent the 9V battery

Answers

I hope this picture helps

Can someone find from which website this test is?

Answers

Answer:

Try quizlet, they have everything on there

Explanation:

Please tell me the answer of this question, first person to answer will be marked brainlist

Answers

It’s the elephant because it’s bigger in size and it covers more surface area. The mouse is smaller in size. The elephant would be the answer

A compound is a hydrate when it

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Hydrate, any compound containing water in the form of H2O molecules, usually, but not always, with a definite content of water by weight. The best-known hydrates are crystalline solids that lose their fundamental structures upon removal of the bound water.

How many joules of energy are required to melt 423g of water at 0°C?

Answers

Answer: hope this helps mark me BRAINLEST plz ;)

Explanation:42. Practice Problem  How many joules of energy are required to vaporize 423g of water at 100oC and 1atmosphere of pressure. q = mHv m = 423 g Hv = 2260 J/gq = (423g) (2260J/g) = 955,980 J = 956 43. Table T – Heat Formulas

The amount of heat needed to melt 423 g of water at 0°C is 141282 J

The heat required to melt water can be obtained by using the following formula:

Q = mL

Q is the heat required.

L is the latent heat of fusion (334 J/g)

m is the mass.

With the above formula, we can obtain the heat required to melt the water as illustrated below:

Mass of water (m) = 423 g

Latent heat of fusion (L) = 334 J/g

Heat (Q) required =?

Q = mL

Q = 423 × 334

Q = 141282 J

Therefore, the amount of heat needed to melt 423 g of water at 0°C is 141282 J

Learn more: https://brainly.com/question/17084080

How do I do unabbreviated electron configurations?

Answers

Answer:

In shorthand electron configuration, the electron configuration starts with the symbol of the noble gas in the previous period, followed by the additional configuration of the electrons for the given element. For example, aluminum has the atomic number 13, which is the number of protons in the nuclei of its atoms.

if you need more help go to you-tube and search up Abbreviated Electron Configurations and it's by EisleyChem

importance of solvay process

Answers

Answer:

It is in great demand by the glass industry, and it is important in the manufacture of textiles, soaps and detergents, numerous chemicals, paper, and iron and steel. It is also used as a water softener (household washing soda is a well-known form of sodium carbonate) and in the refining of petroleum.

Which things below would help make an ecosystem more biodiverse? O Having a very large population of a species O Having a large community of organisms O Lots of different traits in a species Not having seasons

Answers

• Biodiversity is essentially diversity of genetics
• An ecosystem refers to multiple species
• A large population of one species is a decent answer but not the best because more species would have more diverse genetics
• Lots of traits in one species is basically the same as the above bullet point
• Not having seasons could help but not necessarily
• So our best answer is a large community of organisms
•

What is an Atom? please help

Answers

Answer:

An atom is the basic building block of matter. Anything that has a mass-- in other words, anything that occupies space--is composed of atoms.

Answer:

An atom is a particle of matter that uniquely defines achemical element.

Explanation:

this might help you

the most common type of bacteria contamination in canned foods is
E.coli
salmonella
shigella
clostridium botulinum

Answers

Answer:

the answer is salmonella

Is table sugar(sucrose) a substance or a mixture

Answers

Answer: its a compound

A book is held against a wall by applying a force perpendicular to the surface of the book. In a free body diagram of all of the forces acting on the book, what force would keep the book from sliding down the wall? A. force of hand B. force of gravity C. friction force D. normal force

Answers

In a free body diagram of all of the forces acting on the book, the force which would keep the book from sliding down the wall is; Choice A: Force of hand.

In modern mechanics, it is noteworthy to know that the normal force, F(n) is the component of a contact force which is perpendicular to the surface that an object contacts.

In this instance, the surface which the object contacts is the wall.

It has however been stated within the question that;

A book is held against a wall by applying a force perpendicular to the surface of the book.

In conclusion, the force which keeps the book from sliding down the wall is the force of the hand which is perpendicular to the object's surface of contact.

https://brainly.com/question/18775450

Answer:

FORCE OF HAND

What do all of the cells have in common?
A) cell membrane B) endoplasmic reticulum C) flagellum D) nucleus

Answers

Your answer would be A

1
16. What biological concept was Mendel studying when he crossed pea plants many times
over many generations?
A dominant and recessive traits
B. imbalance in ecosystems
C. predator-prey relationships
D. male and female genetic difference

Answers

Answer:

Explanation:

A: Since the Pea plant matured very quickly he was able to identify how the dominant and recessive genes worked.

Who created the "plum pudding model" of the atom?

Thomson
Rutherford
Crooks
Chadwick

Answers

It was first proposed by J. J. Thomson in 1904.

What does it mean to say that a wave is cyclic, or periodic, disturbance?

Answers

Answer:

Wave is a disturbance or energy that propagate through medium from one point to other point

So basically it is a flowing energy that flows into the medium and hence medium particles start oscillating about their mean position to and fro.

This motion of medium particles or this to and fro motion is about their mean position and this will always be cyclic or periodic motion

This means the disturbance or energy continuously flow through the medium such that it will change the position of medium particle and this will be cyclic in order

For an example

y(x,t) = Asin(kx - ωt + φ)

So here above equation of wave is a travelling wave in which displacement of medium particle from its mean position is given by "y"

Now we can see that this disturbance depends upon the sine function and it will repeat its same position after every 2 pi time interval as it is cyclic function for this value

Due to this phenomenon of repetition of its same position we can say that it is disturbance of wave is cyclic.

Explanation:

How much energy does orange light have if its wavelength is 615 nm?

Use the ROYGBIV (red, orange, yellow, green, blue, indigo, violet)

Answers

Answer:

it would be 615

Explanation:

What is an electrolytic cell?
A. A cell with a negative cell voltage
OB. A cell with a spontaneous redox reaction
C. A cell with a positive cell voltage
D. A cell that has a salt-bridge connection

Answers

Answer:

A. A cell with a negative cell voltage

Explanation:

Answers

Answer:

Explanation:

There are changes in the chemical composition of the word.

There's light energy given off.

There's heat energy given up.

How is a beta particle formed?

Answers

Answer:

forms when a neutron changes into a proton and a high-energy electron .

hope this helps <3

In which state of matter are electrons stripped from the nucleus

Answers

Plasma is one of the four common states of matter. A plasma is an electrically charged gas. In a plasma, some electrons have been stripped away from their atoms.

Explanation:

Plasma is one of the states of matter that are electrons stripped from the nucleus

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