H2+ 02 H2O

how do you balence this ​

Answers

Answer 1

Answer:

As the number of atoms in the reactants side is equal to the number of atoms in the product side, the reaction is balanced

Two hydrogen molecules per oxygen molecule are produced because water (H2O) has a ratio of two hydrogen atoms to one oxygen atom. A decomposition reaction occurs when one reactant breaks down into two or more products. This can be represented by the general equation: AB → A + B.

H2O is the chemical formula of water. It means that each molecule of water is made up of two hydrogen atoms, indicated by the letter H, and a single oxygen atom, represented by the letter O. Water is chemical substance with no smell, taste or color.


Related Questions

Pleaseee help it’s timed!!

Answers

Answer:

voliiviloou

Explanation:

volaiviolu

Answer:

Rows

Explanation:

This chart shows characteristics of three different types of atoms.

A 3-column table with one row titled valence electrons in three types of atoms. The first column labeled Atom X has entry 6 valence electrons. The second column labeled Atom Y has entry 2 valence electrons. The third column labeled Atom Z has entry 8 valence electrons.
Which statement is best supported by the information in the chart?

Atom X will donate electrons to Atom Y.
Atom X will accept electrons from Atom Y.
Atom Y will accept electrons from Atom Z.
Atom Z will donate electrons to Atom X.

Answers

Atom X will accept electrons from Atom Y.

Answer:

B) Atom X will accept electrons from Atom Y.

Explanation:

because X has 6 electrons and Y has 2 it would make sense for Y to give to X

Science investigation skills

Answers

People conduct scientific investigations by formulating a hypothesis and observing the results. They then draw conclusions from those results and then share those conclusions with the larger scientific community.

Dashawn has to find the volume of his phone for science
class. He uses a ruler to measure its length, width, and
height and finds the following:
| = 17 cm
w = 7.5 cm
h = 0.8 cm
What is the volume of Dashawn's phone?

Answers

Answer: Volume of rectangle = L * W * H

Explanation: Multiply the 3 numbers together

Answer:

volume = L x W x H

V= 17 x 7.5 x 0.8

V = 102 cm^3

Explanation: Multiply the three number.

To find the volume, you multiply length times width times heigh

in your own words describe the process of a physical change​

Answers

Answer:

A physical change is when the form of an object changes, but the substance stays the same.

Example: Ice melting into water.

Which of these elements has an electron configuration of [Kr]5s2?
barium

calcium

rubidium

strontium

Answers

Strontium has an electron configuration of [Kr]5s²

Further explanation  

In an atom there are levels of energy in the shell and sub shell  

This energy level is expressed in the form of electron configurations.  

Writing electron configurations starts from the lowest to the highest sub-shell energy level. There are 4 sub-shells in the shell of an atom, namely s, p, d and f. The maximum number of electrons for each sub shell is  

s: 2 electrons  

p: 6 electrons  

d: 10 electrons and  

f: 14 electrons  

From an electron configuration of [Kr]5s² can be concluded :

element is in period 5 (5 = shell)element is group 2(valence electron =2 and block s) has atomic number 38 (Kr = 36 + 2(valence elektron from 5s²)

If we look at the periodic system, the elements that meet the requirements in question are Strontium (Sr)

Answer:

D) strontium

_____ means to make the body well again

Answers;

A. Body Repair
B. Energy
C. Growth
D. Motion. (Which One is it??)

Answers

Answer:

I'm pretty sure it's body repair But it also maybe energy

Explanation:

Answer: A.

Explanation:

the science or study of how man and animals perform tasks and solve certain types of problems involving use of the body.

Hope this helps!....(bruh this was tuff)

PLZZ HELP!!
An atom has atomic number 11 and mass number 23. How many electrons does the atom have?
23
22
O 12
O 11

Answers

Answer:

12

Explanation:

23-11, why?, because, the difference between atomic and mass number is the neutron number which most a times is equivalent to the electron number.

Which of the following is the best structure for CH2O2? Explain your reasoning.

Answers

Answer:

I'm guessing structure 1

Answer:

no

Explanation:

no

what are twoparts of an atom

Answers

The answer is neutrons and protons.

Hope you got it!!

Wich statement best describes the progress of science

Answers

Answer:

Scientific ideas are changed when better ones are found.

Explanation:

help quick please?????

Answers

Answer:

the core

Explanation:

Answer:

3rd option, the core.

Explanation:

A chemist is studying an unknown substance. He can break it into its elemental components only by using chemical means.

Based on this observation, how should the unknown substance be classified?
impure substance
solution
mixture
pure substance

Answers

Answer:

C, Mixture

Explanation:

Answer:

the correct answer is actually D pure substance

Explanation:

compare and contrast gymnosperms and angiosperms

Answers

(JSYK: this is technically biology)

Anyways, a gymnosperm is a plant (usually a tree) that has unprotected seeds, this means it bears no fruits and can include (but are not limited to) connifers, cycads, and the ginko. Angiosperms produce flowers to help fertilization and have protected seeds. They are also likely to produce fruits or vegetables.

Hope this helps, if not, comment down below please!!!

I have a test in chem soon can any one help me?

Answers

Answer:

I will be glad to

Bonus question #2: Unknown element, Element X, exists in nature as two isotopes:
^{351}
351

X has a mass of 350.9196 u and
^{353}
353

X has a mass of 352.9209 u. The average atomic mass of Element X is 351.96 u. Calculate the relative abundance of the two Element X isotopes.

Answers

Answer:

Explanation:

your answer is 351.96 i not a 100 per sent right but that should be it

Using the table on the right, perform the following metric unit conversions. Type your answer in the space provided.

0.001087 kg =
g

Answers

Answer:

1.087g

Explanation:

you can use the reminder King Henry Died By Drinking Chocolate Milk. You wanna that the period and move it right 3 times till you get to by.

Answer:

The first answer is 0.001087 kg =  1.087 g

The second answer is 25 mL =  0.025  L

Then the third answer is 531 ms =  0.531  s    

Which is a base unit used in the metric system?

Answers

Answer:

Quarts Litres Pints Degrees Fahrenheit.

ASK for more

Answer:

d

Explanation:

According to Bohr, why don't the electrons fly off into space?

Answers

Bbbbbbbbbbbbbbbbbbbbbbbbbbbbb

Answer:

because Electrons are not little balls that can fly

Explanation:

The __________________ in a chemical formula tells you how many atoms you have of a particular element.
chemical symbols
arrow
subscript
coefficient

Answers

I believe the answer is subscript


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

Answers

16) 100- 273= -173°celsius

17) -73°Celsius

18) °Celsius

19) 77°Celsius

Hi :)

16) 100°K= 100K − 273.15 = -173.1°C

17) 200°K= 200K − 273.15 = -73.15°C

18) 273°K= 273K − 273.15 = -0.15°C

19) 350°K= 350K − 273.15 = 76.85°C

Hope this helps :)

Which molecule is the most polarizable?
N₂
O2
CH4
CO2

Answers

Answer:

CO2 I was wrong about methane

Egg + Heat

Proof of a Chemical Reaction

Answers

Answer:

Water+Heat

proof of physical reaction

Explanation:

Chemical reactions are reactions that can't be undone ex cooking and egg.

Physical reactions are reactions that can be undone ex boiling water.

Answer:

Egg + Heat = Chemical Change

Explanation:

This is a chemical change because it cannot be undone. Once it changed its form you could not revert it back to its original self.

I hope this helps you! :)))))

name two units for density? I need help!!!!

Answers

Answer:

Density is commonly expressed in units of grams per cubic centimetre. For example, the density of water is 1 gram per cubic centimetre, and Earth ’s density is 5.51 grams per cubic centimetre. Density can also be expressed as kilograms per cubic metre (in MKS or SI units). For example, the density of air is 1.2 kilograms per cubic metre.

Explanation:

if there is a sample 50 grams of naoh how many grams are na

Answers

Answer:

Which number is IRRATIONAL? A) √12 B) √36 C) √64 D) √144

Explanation:

Solids are usually: equal in density to other phases more dense than liquids less dense than gases

Answers

Answer:

more dense than liquids

Explanation:

If Maria winks exactly 5 times every minute while she is awake and she sleeps exactly 8 hours a day, how many times does Maria wink in a day? winks/day.​

Answers

Answer:4,800

Explanation:

5 winks a minute, 60 minutes in an hour.

300 winks an hour, 16 hours a day.

4,800.

Answer:

The answer is 4,800 winks per day.

Explanation: There are 24 hours in a day, 24 minus the 8 hours shes asleep is 16. There are 60 minutes in an hour. 5 x 60 is 300. 300 winks an hour multiplied by the 16 hours she's awake is 4,800.

WILL GIVE 5 STAR RATING AND BRAINLIEST IF YOU ANSWER FIRST AND CORRECTLY

What are the total number of elements in C₄H₉OH ?

Answers

Theres three elements i'm assuming. C (carbon), H (hydrogen), O is Oxygen.

A student determines the density of an element to be 2.73 g/cm 3 . If the accepted value is 2.70 grams per cm 3 , what is the student's percent error? Identify the element. What is the boiling of this element in Celsius degree

Answers

Answer:

Explanation:

percentage error = error  x 100 / correct value

= (2.73 - 2.70) x100 / 2.70

= 1.11 %

The element is Aluminium whose density is 2.702 grams / cc

Boiling point of Aluminium = 2519⁰C .

You are an employee at "cash for gold" and a customer comes in looking to exchange gold for money. They claim to have 3.47 gram nugget of fold. How many particles (atoms) of gold are in one nugget? With work shown

Answers

Answer:

The number of atoms in 3.47 gram nugget of gold is approximately 1.0606 × 10²² atoms

Explanation:

The given mass of gold = 3.47 grams

The molar mass of gold = 196.96657 g/mol

The number of moles of gold in 3.47 grams of gold = 3.47 grams/(196.96657 g/mol)

The number of moles of gold in 3.47 gram nugget of gold = 0.01762 moles

The number of atoms in one mole of gold = 6.02 × 10²³ atoms

The number of atoms in 0.01762 moles of gold = 6.02 × 10²³ atoms/mole × 0.01762 moles

The number of atoms in 0.01762 moles of gold ≈ 1.0606 × 10²² atoms

∴ The number of atoms in 3.47 gram nugget of gold ≈ 1.0606 × 10²² atoms.

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A dolphin catches and eats small fishWhich type of organism in this scenario.A. ConsumerB. decomposerC. parasiteD. producer 2.72981366 rounded to nearest hundredth Moreno Motors Inc. identifies that bikers are usually the first users of their newly launched products. The firm sends consultants to biker rallies to discover how bikers who use Moreno motorcycles modify them to extend their usage, as well as the desired benefits. Recent visits revealed that bikers were seeking items, such as bolt-on chrome products, horsepower performance enhancers, and improved braking systems in Moreno motorcycles. In this example, Moreno Motors Inc. is studying which of the following groups of customers?a) lead users.b) mainstream customers.c) laggards.d) captive customers.e) spinners. PLZZZZZZZZZZZ HELP ME WITH THIS IT DUE TODAY!!!!PLZ LABEL WHAT QUESTION YOU ANSWED!!!1. How does our unit essential question (How did issues of power, wealth, and morality influence exploration and colonization in North America?) connect to desires for God, Gold, and Glory?2. How could exploration of a new land bring power to a person? To a nation?3. Why might nations feel compelled to spread their religious traditions outside of their own borders?4. Is the desire for gold/wealth a personal desire or a patriotic desire? Can it be both?5. How does the desire for power and wealth connect to or conflict with the desire for morality? Plz, Help me. hurry!!!!!1.The minimum age requirement to be in the Senate is _____ years, and an individual must be a U.S. citizen for at least ______ years. 25; 4 25; 9 30; 4 30, 9 how do plates with less density react to a Convergent push from an Earthquake? Please Dont Skip Over My Question, Please Help Me. ;(Let f(x) = 7x + 9. Suppose you add 2 to the input of f to create a new function g, then multiply the output of function g by 3 to create function h. What are the slope and y-intercept of the graph of function h?slope = y-intercept = THERE ARE TWO CHOOSE BOTH I WILL GIVE THE CROWN FOR WHO EVERY GETS BOTH CORRECT!!!!!!!!!!!!!!!!!!!!!!!Name TWO achievements of Alexander Hamilton besides authorship of the Federalist Papers.a. He called for a convention to revise the Articles of Confederation.b. He wrote the Virginia Statute for Religious Freedom.c. He served as the nation's first Secretary of the Treasury.d. He was responsible for having legislation passed that led to the end of slavery in the state.e. He became the fourth President of the United States. How many solutions does this equation have?4 6r = 9r + 4 the percent of decrease from 12 to 9. Which example best demonstrates stewardship of the atmosphere In the declarations first line, it notes political bands which parties are included in this band? Why are so many immigrants coming from North Africa? Consider the equation y = 1.5x + 2. Find four pairs of x and y values that makethe equation true. Plot the points (x, y) on the coordinate plane.Based on the graph, can this be a proportional relationship? Why or why not? If (8, 3) is rotated 90o about the origin the new point would be: A. (3, -8) B. (-8, 3) C. (-3, 8) D. (8, -3) Click to review the online content. Then answer the question(s) below, using complete sentences. Scroll down to view additional questions. How to Conquer the First Impression What does this article say about being on time? Help please I don't understand this I've read over it a couple times and still don't get it how to remember things in a very lazy manner luis es memos alto Vicente Raymond bought a box of candy bars for $5.25 and sells the candy for $0.75 each. Paul bought a box of candy bars for $8.75 and then sells the candy for $1.25 each. How many candy bars does each have to sell to have the same profit? Write an equation to match this scenario and then determine the solution.