Chemistry High School

write the molecular fotmula of water​

Answers

Answer 1

Answer:

H20

Explanation:

Answer 2

Answer:

hope it helped you

Explanation:

H2O (u have to write ✍️no 2 below H.

Related Questions


Is carbon a metal or a nonmetal? How many valence electrons does a carbon atom have?

Answers

Answer:

Carbon is a solid non-metal element. Carbon has eight valence electrons.

Explanation:

Hope this helps!!

Compare and contrast Transverse Waves and Longitudinal Wave

Answers

there, so you can have choices, though they all mean the same thing.

Which of the following has the smallest radius?

A. Br-

B. Br

C. I-

D. I

Answers

B) Br

..................

I’m pretty sure it’s Br

how many molecules are in 3.40L of H2O vapor at STP?*

Answers

Answer:

9.14 x 10^22 molecules

Explanation:

what is the density of an object with a mass of 100 grams and a volume of 50 cm​

Answers

Answer:

2

Explanation:

because 100÷50=2m÷v=d


Convert the following to Celsius
16) 100°K
17) 200°K
18) 273°K
19) 350°K

Answers

Answer:

16) -173.15cel

17)-73.15cel

18)-0.15

19)76.85

Explanation:

I converted kelvins to cel

Brainly pls

2.18 x 10^6 ng = 2.18 x 10^? mg

Answers

Answer:

2.18 * 10^12 mg

Explanation:

1 nanogram [ng] = 10^6 milligram [mg]

2.18 * 10^6 ng/ 1 ng = X mg / 10^6 mg

X mg = 2.18 * 10^12 mg

Answer:

2.18 * 10^12 mg

Explanation

What mass of ethanol will All
a 250.0 ml container if its
density is 0.789 g/ml?

Answers

Answer:

The answer is 197.25 g

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

mass = Density × volume

From the question

volume = 250 mL

density = 0.789 g/ml

So we have

mass = 250 × 0.789

We have the final answer as

197.25 g

Hope this helps you

Which element would be the least similar to magnesium (Mg)?
A. Sr
B. Na
C. Be
D. Ca

Answers

Answer:

B: NA

Explanation:

this is the apex answer

If its density is 34 g/ml, what is the mass of 120.0 ml of the liquid?

Answers

Answer:

The answer is 4080 g

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

mass = Density × volume

From the question

volume = 120 mL

density = 34 g/ml

We have

mass = 34 × 120

We have the final answer as

4080 g

Hope this helps you


Which element has four times as many protons in its nucleus than are found in Neon?

Answers

Answer:

Zirconium, Zr, 40

Explanation:

Protons can be found by looking at the atomic number. Neon's atomic number is 10, so just multiply 10 by 4 and you get 40.


Jose adds five grams of a chemical to one liter of liquid and observes a reaction. If the reaction is endothermic, what will happen?
A
The liquid's mass increases; therefore, the volume of the liquid will increase
B
The liquids' mass decreases; therefore, the volume of the liquid will decrease.
С
Energy is released during the reaction; therefore, the temperature of the liquid will increase.
Energy is absorbed during the reaction; therefore, the temperature of the liquid will decrease.
D

Answers

Answer:

D. Energy is absorbed during the reaction; therefore, the temperature of the liquid will decrease

Explanation:

In a chemical reaction, the reaction is said to be ENDOTHERMIC if the reaction utilizes or uses energy instead of given it off. In this reaction, Jose adds five grams of a chemical to one liter of liquid and observes the reaction.

According to this question, the reaction is ENDOTHERMIC. This means that energy is absorbed or used up during the reaction; therefore, the temperature of the liquid will decrease i.e. the liquid used in the reaction will become COLDER.

Convert 0.0134 Liter to millimeter

Answers

Answer:

13400 millimeters.

Explanation:

Multiply the volume value by 1e+6

2
A train travels 25 km in 0.5 hrs. How fast is the train going?​

Answers

Answer:

15

Explanation:

Answer:

50 km/h

Explanation:

Since in half an hour it has gone 25km, double that (25 x 2) and you get your answer in km/h. Therefore, the train is going 50km/h.  

A sample has a PH of 4, and another sample has a PH of 9. Which sub is the base? How many times basic is it??

Answers

Answer:

the first one

Explanation:

the first one is the base because it has a lower PH

How can charged objects interact without touching

Answers

Electrostatic forces are non-contact forces; they pull or push on objects without touching them. Rubbing some materials together can result in something called 'charge' being moved from one surface to the other. Charged objects pull on other uncharged objects and may either push or pull on other charged objects(hopefully this helps)

Is it true or false??. . .Help me please

Answers

Answer:

I think the answer is true

Can someone please help

Answers

Answer:

3

Explanation:

3 ampers (it says in the problem)

What do we call the (+) ion in an ionic bond? *
O Cation
O Anion
O Metalloid
O Covalent

Answers

Answer:

cation

Explanation:

a cation is an ion with a postitive charge. This (cat)ion (+) = cats are good , anion (onion) are not good (-)

Can you tell me the Valence Electron of each element?​

Answers

Answer:

Lithium oxide.......................

Explanation:

6. magnicium chloride

2.Barium chloride

3. calcium nitride

4. lithium oxide

5. Aluminium sulphide

plzz mark me brainliest

The elements least likely to form bonds are found in which group? 15 16 17 18

Answers

Answer:

i think 15 but dont get mad if not (❁´◡`❁)

Explanation:

Answer:

The answer is 18

Explanation:sorry if im wrong TwT

Hydrochloric acid and sodium hydroxide can be combined to form sodium chloride and water. Which best explains the reaction?

Answers

Answer:

Explanation:

Hydrochloric acid and sodium hydroxide can be combined in equal ratios to form sodium chloride and water. Which best explains the reaction? The total volume produced by combining hydrochloric acid and sodium hydroxide will result in the same volume of sodium chloride and water.

Which statement best describes the difference between veins and arteries? *
veins carry oxygen rich blood back to the heart while arteries carry oxygen poor blood
away from the heart
veins carry oxygen poor blood back to the heart while arteries carry oxygen rich blood
away from the heart.
brings oxygen into the lungs and releases carbon dioxide and water (waste materials)
from the body
arteries carry blood that is carbon dioxide rich to the heart,

Answers

Answer:

Veins carry oxygen poor blood back to the heart while arteries carry oxygen rich blood

1s^ 2 2s^ 2 2p^ 6 3s^ 2 3p^ 6 4s^ 2 3d^ 10 4p^ 2 what element is this

Answers

Answer:

please use shell notation

Apps
What do you already know about mass, weight, and gravity?

Answers

Answer:

they are the three states of matter

Electron Dot Structures

Draw the electron dot structures for the following elements:

Magnesium (Mg)


Lithium (Li)


Argon (Ar)


Carbon (C)


Sulfur (S)


Helium (He)


Aluminum (Al)


Nitrogen (N)


Silicon (Si)


Hydrogen (H)


Calcium (Ca)


Neon (Ne)


Potassium (K)


Boron (B)


Chlorine (Cl)

Answers

Answer:

surf (S)

tide (T)

champion (C)

Explanation:

wag mo nlng pansinin

Which formula is an ionic compound?
A.NaF
B.N2
C.NO2
D.CO2

FIRST ACCUAL ANSWER GETS BRAINLIST :)

Answers

Answer:

NaF

Explanation:

Answer: the answer is Naf

Explanation
and I love pop tart kitties OWO but i hope this helped i have a in science so i got 100% on it bye bye OWO

What determines the carrying capacity of an environment

Answers

Carrying capacity, or the maximum number of individuals that an environment can sustain over time without destroying or degrading the environment, is determined by a few key factors: food availability, water, and space

helpppppppppp please
what did max planck discovery?

Answers

Answer:

Max Planck discovered the quantum of action

Explanation:

He discovered the quantum of action

In an isotope, what does the 'u' stand for?
For example: Lithium isotope: Li-6 6u
The u after 6

Answers

The u is called atomic mass unit.
It is a unit of weight
Like we have kilograms,grams,milligrams, On the atomic level,the unit of weight measurement is AMU or just u for short.
Other Questions
Meandre has 8 pints of milk. If he drinks of a pint of milk each day, how long will the 8 pints of milk last him? Can someone tell me if I explained this right? I'll give brainliest :}Background info: Potato cells are placed in different levels of NaCl. Edy has $450 in her savings account. She deposits $40 each month. Juan has $975 in his checking account. He writes a check for for each month for his cell phone bill. He also writes a check for $19.55 each month for his water bill. After how many months will Edy and Juan have the same amount of money in their accounts? Which of these terms refers to the principle that people accused of a crime must be granted certain legal rights? Text to speechadue processbhabeas corpuscjudicial reviewdeminent domain Why does the "Progressive Era" end abruptly in 1914? Would you consider theera a failure or a success? Why? What evidence suggests that Luke was Greek?He was probably educated in Tarsus.He was not listed among those "of the circumcision."He was a doctor.He wrote to Theophilus. How would you write 0.5.... as a decimal? GIVING BRAINLIEST!!!Select the correct text in the passage.Wendy Jones wrote a letter to her daughter's school principal. Which two sentences in the letter contain data?Junk food is harming our children's health. 1) It's known that 32 percent of youth are overweight, and 74 percent are unfit.2) The bad food offered in public schools contributes to this unacceptable problem. 3) A single 12-ounce can of soda contains up to 13 teaspoons of sugar in the form of high-fructose corn syrup. 4) Many of these sodas and other unhealthy foods are available to kids at school at low prices. To make matters worse, school lunches do not appeal to many students.5) Due to a lack of fresh and flavorful food in these lunches, many students will choose to buy the cheap junk food offered instead. If we could stock vending machines and cafeterias with healthier foods, it would definitely help our children develop healthy eating habits and improve their overall health.please help me.... If a pair of lines is intersected by Third line known as a transversal, then pairs of congruent angles are formed true or false In a short story set in the future, humankind has developed self-aware computers that can learn and make decisions. Unfortunately, the computers have become dominant over people. In a world run by computers, humans are treated as a novelty, the way we might keep a pet. Sometimes they are cared for fairly well, and sometimes they are not. Which is the best statement of the theme of the story? A. The more we know, the more we are capable of. B. Humans must learn to live in harmony with computers. C. Technology can be harmful when taken to extremes. D. Human compassion is not necessary for survival passes through (-8.-1) and has a zero slope What has roots no one sees, is taller than trees up it goes and yet it never grows? need help ASAP. please and thank you DEACBFor this lab, you will find the area of an irregularly shaped room with the shape as shown above.Ask the user to enter the values for sides A, B, C, D, and E and print out the total room area.Remember the formula for finding the area of a rectangle is length width and the area of a right triangle is 0.5 * the base" heighPlease note the final area should be in decimal format.Sample RunEnter side A: 11Enter side B: 2Enter side C: 4Enter side D: 7Enter side E: 1Sample OutputRoom Area: 53.5 Which best summarizes a concept related to the work-energy theorem?When work is positive, the environment does work on an object.When work is negative, the environment does work on an object.O When work is positive, the kinetic energy in a system remains constant.When work is negative, the kinetic energy in a system remains constant. 1) State whether plants perform cellular respiration and explain why or why not.2)Explain which cell would likely contain more mitochondria, a muscle cell or a skin cell. Use your knowledge of energy; mitochondria and their function to support your answer. How did Islamic civilization spread to encompass such an extensive empire?Pls need help for homework essays!!!!!!! What are three things from Ancient Rome that believe would benefit and should be adopted by The Byzantine Empire. parker wants to price the total cost of a new coat the coat cost $15.99 plus taxes there is a 7% tax on the coat how much taxes will she have to pay Ms. Carey is planning to host a neighborhood picnic. To make sure she had enough ingredients, she was making a table ofpossible combinations of dried fruit to peanuts for her terrific trail mix. The ratio she used was 3 to 5. The table below showsthe original recipe's ratio of dried fruit to peanuts.Dried Fruit(oz)9Peanuts(oz)452780Which of the following accurately fills in the missing information to identify equivalent ratios for Ms. Carey?A 30 ounces of peanuts and 42 ounces of dried fruitB. 48 ounces of peanuts and 15 ounces of dried fruit C . 3 ounces of peanuts and 54 ounces of dried fruit. D. 15 ounces of peanuts and 48 ounces of dried fruit