Chemistry High School


CH(4)+ 20(2)→ CO2+ 2H(2)O

22.
The reaction shown above is an example of a -

a. synthesis reaction
b. combustion reaction
c. decomposition reaction
d. double displacement reaction

Answers

Answer 1

Answer:

Reaction is a Combustion reaction

Related Questions

Which element has the least density at STP?

Answers

Answer:

Helium, this noble gas has the least density at STP

Explanation:

What is the energy of a radio wave whose frequency is 6.2 x 106 Hz?

Answers

Answer:

657.2 Hz

Explanation:

Do I use molar mass when the problem gives me grams? (Yes or No), Right answer gets brainliest.
(Stoichiometry Review)

Answers

Answer:

yes

Explanation:

yes because the molar mass is an intensive property of the substance, that does not depend on the size of the sample. In the International System of Units (SI), the base unit of molar mass is kg/mol. However, for historical reasons, molar masses are almost always expressed in g/mol.

Answer:

Yes, if your calculating from grams to moles.

Can anyone explain the process of photosynthesis in detail? (Answer gotta be long. Sorry! Also I am in middle school. Means I don’t know which subject this is so I picked chemistry.)

Answers

Sure, In order to grow and survive, plants need to perform photosynthesis. So the plant intakes Carbon Dioxide (CO2), Sunlight and Water (H2O), which goes into the chloroplasts. Once inside the Chloroplasts, the Reactants are turned into the products Glucose (C6H12O6) and Oxygen (O2). The glucose is then used as food/fuel for the plant, and the oxygen is to be breathed by humans or other animals.

Which of the following does NOT
have large coal deposits?

Answers

Answer:

Mexico

Explanation:

The top five countries with the largest proven coal reserves

United States – 249 billion tonnesRussia – 162 billion tonnesAustralia – 149 billion tonnesChina – 142 billion tonnesIndia – 106 billion tonnes.

Mexico isn't on this list

hope this helps, pls mark brainliest :D

2. How many liters of propane gas (C3H8) will undergo complete combustion with 34.0 L of oxygen gas? ___ C3H8 (g) + ___ O2 (g → ___ CO2 (g + ___ H2O(g

Answers

Answer:

6.8 liters of propane gas will undergo a complete combustion with 34.0 L of oxygen gas.

Explanation:

Given;

combustion reaction of propane and oxygen;

C₃H₈ + O₂(g)  → CO₂(g)     + H₂O(g)

Balance the chemical reaction as follows;

C₃H₈ + 5O₂(g)  → 3CO₂(g)   +   4H₂O(g)

From the balanced equation;

1 mole of C₃H₈ ---------------- 5 moles of 5O₂(g)

x Liters of C₃H₈ ----------------- 34.0 Liters of O₂(g)

x = 34 liters / 5

x = 6.8 liters

Therefore, 6.8 liters of propane gas will undergo a complete combustion with 34.0 L of oxygen gas.

Please help me vote you brainiest

Answers

Answer: D

Explanation: P = W/t

W = F d

When dividing, if you have a large number over a small, you get a large number. We want a small number, so we want the opposite for our P : W/ t formula. We want a small Work and a large time.

Right off the bat, the two with the least time aren't right then.

From there, we can estimate how much work it would take using the W = F d equation. If there is a small distance, there is less work, which is what we want to achieve a small work over large time.

So, the choice with the most time and the least distance should be correct.

B. The mass of the sugar and water is greater than the mass of the sugal
C. The mass of the sugar solution is greater than the mass of the sugar and water.
D. We do not have enough information to determine anything about the mass of the sugar, water, or the
sugar solution.
8. When combined in the correct ratio, hydrogen and oxygen atoms can form water as show below.
+
Hydrogen
Oxygen
Water
this example, water is an example of which of the following?

Answers

Answer: it’s the first one ☝️

Mass NEVER changes

how does the immune system uses feedback mechanisms?

Answers

Answer:The main job of the innate immune system is to fight harmful substances and germs that enter the body, for instance through the skin or digestive system. The adaptive (specific) immune system makes antibodies and uses them to specifically fight certain germs that the body has previously come into contact with.

Do sulphates react with acids​

Answers

no it cannot I hope I helped

Answer:

Can not

Explanation:

Because both are salts of sodium and hydroxide

how many grams are in 1.09 moles of glucose?

Answers

Answer: 196.36990920000002
196.36990920000002 exactly

Genetics is the study of

Answers

Genetics is a term that refers to the study of genes and their roles in inheritance

PLZ HELP ASAP THIS IS DUE LIKE RIGHT NOW

Answers

Answer:it's either the first or second one

Explanation:

the layers of the earth

When we drink water, it is absorbed into our blood through the digestive tract. If the concentration of water in body cells is low, cells must get water from the blood. What process allows water to enter body cells from the blood?

Answers

Answer:

Osmosis

Explanation:

Water is very essential for the body. When we drink water, our blood cells absorbs water from the body. This happen by a process called as osmosis process. Osmosis is type of diffusion process.

Water along with oxygen and carbon dioxide are some of the simple molecules that moves into the blood cell. Osmosis is the process by which water molecules passes into the cell bodies through its semi permeable membrane.    

1. What three characteristics determine the type of sedimentary rock?

Answers

Answer:

Characteristics of Sedimentary Rocks. ● The color of the sedimentary rock is determined by the content of the strata that were pressed together to form it. If the layers have a high organic content, the rock is usually gray to black in color. On the other hand, high amount of minerals give the rock the color of the mineral.

Hopefully, this helps! :D

Answer:

texture

color

and another one is, well

What do the elements in group 18 have in common?

Answers

Answer: They are all odorless, colorless, monatomic gases with very low chemical reactivity.

Explanation: Plz give brainliest

please help me ASAP PLEASE​

Answers

24 cm^3 CO2 / 1 * 1 dcm^3 / 1000 cm^3 * 1 mol / 24 dcm^3 = 0.001 mol of CO3 is required

do all-stars mak energy through fusions

Answers

Yes they do make stars through fusions

Where does the chemical energy of food start?

Answers

Answer:

Chemical energy in foodChemical energy in foodAs the bonds between the atoms in food loosen or break, a chemical reaction takes place, and new compounds are created. The energy produced from this reaction keeps us warm, helps us move, and allows us to grow. Different foods store different amounts of energy

Explanation:

plz mark as brainilist

Answer:

BELOW !!

Explanation:

Chemical energy in food

As the bonds between the atoms in food loosen or break, a chemical reaction takes place, and new compounds are created. The energy produced from this reaction keeps us warm, helps us move, and allows us to grow. Different foods store different amounts of energy.

PLEASE HELP ME MY MOM COMES HOME SOON!! ITS 4AM!!
Blaire is teaching her little brother to ride his bike. She uses 7 N of force to push a 14 kg bike. What is the acceleration?
98 m/s2
0.5 m/s2
21 m/s2
2 m/s2

Answers

Answer:

The solution is

Explanation:

a = f/m

a =7/14

a=1/2

a=0.5

Acceleration of bike is 0.5 m/s²

Given that:

Force used in push = 7 N

Mass of bike = 14 kg

Find:

Acceleration of bike

Computation:

Force = Mass × Acceleration

Force used in push = Mass of bike × Acceleration of bike

7 = 14 × Acceleration of bike

Acceleration of bike = 7 / 14

Acceleration of bike = 0.5 m/s²

Learn more:

https://brainly.com/question/16685492?referrer=searchResults

Electron geometry of the central atom br in brf4+

Answers

Answer:

Octahedral

Explanation:

Recall that according to Valence Shell Electron Pair Repulsion Theory(VSEPR) the shape of a molecule is based on the number of electron pairs on the outermost shell of its central atom.

In BrF4^-, the bromine atom is surrounded by 6 electron pairs. Four bond pairs and two lone pairs.  This means a total of six regions of electron density.

According to VSEPR Theory,  BrF4^- has an octahedral electron geometry and its the molecular geometry will be square planar  since it is of the type AX4E2.

An image of the  BrF4^- is attached below.

No help just posting a picture

Answers

Oh okay I learned a lot.
Stay safe homie

Which one of the following is not an agent of chemical weathering?
proprionic acid
carbon dioxide
acid rain

Answers

Answer:

its proprionic acid which do not cause any hazardous effect on environment it only effect internal body of human if it is ingested.

Explanation:

list three things that rely on the Sun as the major source of energy​

Answers

Answer:

Three things that rely on the sun for energy is coal,oil, and natural gases

Explanation:

We use engery too cook our food that's an example of how gases are used.

We run our cars .Cars use oil.

And we use electricity for lights. You need coal for the electricity

Answer:  

*Sun sends oxygen so all living kind (humans, plants, animals etc.) can live

*The sun sends heat to the earth so it wouldnt freeze

*We can use the sun as to create solar energy

Explanation: I hope this helps <3

The atmospheric gases in the thermoaphere are heated___.

Answers

Answer:

Directly by the sun

Directed by the sun! Hope this helps

SOMEONE ANSWER?!!?!?!,!,EMERGENCY Can someone tell me the answer plz plz I’ll give you brainlist and points plz This is my final test No wrong answers

Answers

Answer: Should be A)

Explanation:

the size of planets effects the amount of gravitational force each planet has, like jupiter, it has the most gravity.

A science teacher asked students to calculate the density of a toy block. The mass of the block was 110 grams and the volume of the block was 8 cubic centimeters. What was the density of the toy block in cubic centimeters?​

Answers

Answer:

13.75

Explanation:

Density is equal to mass divided by volume. 110/8 = 13.75

Formula for the compound that contains Mg2+ and O2-

Answers

Answer:

MgO.

Explanation:

charges of both satisfy one another (balanced) -- producing a compound MgO.

PLEASE HELP !!
Use the diagram below to answer the following questions.
PLEASE HELP
E TE
Figure B
In Figure B, which region contains the noble gas family of elements?
ОА
OD
ОС
OB

Answers

Noble gas located in the region D

Further explanation

Noble gas are located in group 18 in the periodic table consisting of helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), have a stable electron configuration where the valence electrons are 8(full outer shell of electrons), so it is very hard to react because of its stability

If we look at the periodic system of the elements, the noble gases are on the far right, so that in Figure 8 it is located in area D

And the other region :

A : alkali elements(group 1),

B : alkaline earth elements(group 2)

C : halogen elements(group 17)

Please I need help I really don’t get this lol

Answers

Answer:

The pointer pointing to the grey and white balls are either proton or nuetron i van't really tell cause their grey and white.

The whole clster of balls is the Nucleus

The black balls on the lines are electrons

And the lines are the energy level

Explanation:

Other Questions
I need to know that answers to this in 10 mins. What is the exchange of goods and services between individuals or groups? *First to answer gets Brainliest! Which of following is the graph of y -(X+ 1)-37 Answer this for brainlist and thanks and 10 extra points u dont wanna miss it get correct ;) You've Got a Chip in Your Eye1Imagine if one day computer chips could be placed in your eyes. Would you be able to see through walls or use your eyes to zoom in on tiny, miniscule objects? Computer chips may not give you supersight, but they may help some blind people finally see.2Replacing body parts with mechanical devices is called bionics. Scientists have been developing bionic body parts for a long time, but in the last 20 years, they have started using computer chips to make bionic devices better and more effective.3To place a computer chip in an eye, a doctor makes a tiny pocket in the retina, the back of the eye. The retina is like a movie screen, and the lens at the front of your eye focuses light onto it. The computer chip, about the size of a pinhead and thinner than a human hair, is placed inside the tiny pocket. The chip senses light and helps a person see.4Six people were in the first group to allow doctors to put chips in their eyes. The patients say the computer chips have helped them see better. Before the operation, one patient could only see objects that were a few feet away. After the operation was completed, he said he could see a flock of geese flying through the sky. Another patient who saw only darkness before the operation can now see light and shadows. "Someone came along and developed this little thing to put in your eye, and suddenly I can see more light," he said, celebrating his improved sight. "None of us had expectations that we'd be able to see someone's face or read a book. Eventually, it'll work."Which detail from the passage describes how the computer chip is placed in the eye?AThe lens in the eye focuses light onto the computer chip.BA tiny pocket is made in the retina for the computer chip.CThe computer chip is placed next to the eye because it is too big to actually fit inside.DThe patient has to remain awake because the eyes must be open during surgery.Read the passage.Which detail from the passage describes how the computer chip is placed in the eye?AThe lens in the eye focuses light onto the computer chip.BA tiny pocket is made in the retina for the computer chip.CThe computer chip is placed next to the eye because it is too big to actually fit inside.DThe patient has to remain awake because the eyes must be open during surgery. A school conducts 27 tests in 36 weeks. Assume the school conducts tests at a constant rate. What is the slope of the line that represents the number of tests on the y-axis and the time in weeks on the x-axis? Which type of bond will likely form between calcium and iodine? ionic bondpolar covalentnon polar covalentmetallic Fill in the blank. Remember to spell correctly.The United States has an airbase in Greenland near the town of ____. Sam and Larrys Ice Cream Shoppe sells the following sizes of ice cream cones: single at $0.89, double at $1.19; triple at $1.39. One day, Danielle sold 52 ice cream cones. She sold two more than twice as many doubles as triples. If she sold $58.98 in cones, how many of each size did she sell? Which factor can decrease the rate of a chemical reaction?Olow activation energyO high pressureO low temperatureO high concentration of enzyme Which statement most accurately describes the economic trends facing Australia during the 21st century?A. Industrial society is expanding and the amount of wealth generated from agriculture is non-existent.B. Agricultural society is expanding while the amount of wealth generated from Industrialization is shrinking.C. Industrial society is expanding, but the majority of the wealth is still generated from agriculture and mining.D. Equal wealth is generated between factory production and agricultural production.(please help I've been wanting to finish this final exam for a while now and I don't wanna have to lose points or take a long time on it-) A groundskeeper who moves from a school to a church and remains a groundskeeper is experiencing _____. Activity 1.1. Study each picture, among the great work presented which do you like/love the most? Why2. From the word itself impressionism, are the artists in this movement trying to impress its audience? Why or why not?Activity 2Choose two artworks above and write how the elements and principle of arts is applied. Answer it in your activity notebook Which selection listed below is a way in which the Legislative Branch in the US checks the power of the Executive Branch?Select one:A. vetoing Executive orders B. ruling the actions of the President or other Executive officials unconstitutional C. impeaching the President or other Executive officials if they have committed crimes Only answer if you can help please how many cookies will Julie make in 7 days? PLEASE ANSWER QUICKLY Gavin deposited $200 into his savings account that is compounded semi-annually at an interest rate of 9%. Gavin hoped he would have enough money in 8 years to buy a $400 gaming console for college. Is Gavin correct? Write and solve an equation, showing your work to justify your answer.Answer: Which investment would be worth the MOST after 20 years?A) An initial investment of $3000 compounded annually at a rate of 12%B) An initial investment of $3000 compounded quarterly at a rate of 11.9%C) An initial investment of $3000 compounded weekly at a rate of 11.85%D) An initial investment of $3000 compounded continuously at a rate of 11.8% When providing care, which of the following is the most important measure to prevent the spread of bloodborne pathogens? aUsing disposable supplies such as bandages and dressings instead of gloves bWashing your hands only before providing care cUsing personal protective equipment during care dChecking with the victim to see whether he or she has any infectious diseases Cellular respiration occurs in the body 24 hours per day. During exercise, the rate of cellular respiration increases. Why does increased cellular respiration cause people to breathe faster?More oxygen is needed to produce energy, and more carbon dioxide waste must be removed from the body.More nutrients are needed to produce more energy, and more oxygen must be removed from the body.More heat is generated by the body, and breathing cools the body quickly.More water is lost from the body, and breathing hydrates the body.