Which is Chemical Equation is Balanced?
CH, +0,------CO,+2H2O
4A1+30,-----2A1,0,
H2+O2-----2H,0

Answers

Answer 1
none of these appear to be balanced. The , is confusing though, is it supposed to be a subscript of a number?

Related Questions

WHY IS A CREEP(creep as the science def) HARD TO DETECT ?( please need help to answer this question!!)

Answers

Answer:

Creep is the imperceptibly slow, steady, downward movement of slope-forming soil or rock. Movement is caused by shear stress sufficient to produce permanent deformation, but too small to produce shear failure. ... Continuous, where shear stress continuously exceeds the strength of the material.

Explanation:

Plz help!

It takes a car going 40 mph 3 seconds to come to a stop. What is the acceleration?

Answers

Answer:

6 second???

Explanation:

Im so sorry if thats wrong!!!!

Calculate the mass of 120cc of nitrogen gas at ntp.How many number of molecules are present in it.Easy step of mole concept​

Answers

Explanation:

The formula of nitrogen gas is given as;

          N₂

  Given volume of the gas = 120cm³

Now,

 We need to find the number of molecules and the mass of this compound

Solution:

At STP;

     1 mole of gas occupies a volume of 1dm³ ;

          1000cm³  = 1dm³

          120cm³  gives 0.12dm³;

Now;

       

              1dm ³ of gas contains 1 mole of substance at STP

             0.12dm³ will contain 0.12mole of nitrogen gas at STP

Mass of N₂ gas = number of moles x molar mass of N₂

    Molar mass of N₂ = 2(14)  = 28g/mol

    Mass of N₂  = 0.12 x 28  = 3.36g

1 mole of a substance contains 6.02 x 10²³ molecules

0.12 mole of N₂ will contain 0.12 x 6.02 x 10²³  = 7.22 x 10²²molecules

Which of the following is NOT an element? Nickel Potassium Carbon dioxide Aluminum

Answers

Answer:

carbon dioxide

Explanation:

carbon dioxide is a compound

Which traits are polygenic? Select three options.

Answers

Answer:

is there an answier choice u have to choose from or no

Explanation:

Answer:

Hair color

Eye color

Birth weight

Explanation:

Which molecule contains only single covalent bonds?
A CL
B CO2
C CN2
D 02​

Answers

CO2 i think if you understand so mark me as brainliest please.

Answer:

a

Explanation:

because that is a clorune that compose of a single covalent bonds

2 C6H12O2 + 6 O2 -



C =

H =

O =

Answers

Answer:

Explanation:

2 C6H12O2 + 6 O2 -

C = 12

H = 24

O = 16

is titanium softer than gold i need this ASAPPPP

Answers

No, gold is much softer than titanium!!

how is the atomic radius calculated?​

Answers

Explanation:

Divide the distance between the nuclei of the atoms by two if the bond is covalent

32.0 g SO2
Calculate the number of moles

Answers

Answer:

500 moles

Explanation:

Given mass of SO2 = 32

Molar mass of SO2 =64

So, 32x10^8/64=500

What does the size of the atom & their electron structure (called electron configuration) determine?

Answers

Answer:

In atomic physics and quantum chemistry, the electron configuration is the arrangement of electrons in an atom, molecule, or other physical structure (e.g., a crystal). ... The concept is also useful for describing the chemical bonds that hold atoms together.

Explanation:

hope this helps :)

How did you get the light to shine? in science

Answers

Answer:

by using a lemon as a circuit and two positive and negative wires

what is the amount of matter in an object.

A mass
B volume
C Density

Answers

Mass mass mass mass mass mass

Answer:

Option A

Explanation:

The answer is "mass" or option A. It's not option B because volume is the amount of space in a object which is not what the question is asking for. It's also not option C because density goes hand in hand with volume measuring how much space a object takes up, and also density is mass per volume. Leaving only option A, therefore it is your answer.

Hope this helps.

Adenosine triphosphate is the:

A. energy molecule

B. mitochondria

C. cellular respiration

D. chloroplast

Answers

C. Cellular respiration

Answer:

A

Explanation:

It is the energy molecule.

The given diagram shows the structure of an electrolytic cell.

Ella wants to construct an electrolytic cell using equipments found at home.

Give examples of materials (found at home )she can use for :


1. Anode (+Ve)

2. Cathode (-Ve)

3. Electrolyte ( Ella plans to use salty water. Will it work ? )

4. External Circuit (Battery) How powerful must it be

5.Bulb ( What kind ?)

Answers

Answer:

1. she requires the anode and cathode

3. the electrolyte : the increase amount of salty water she uses will determine the transfer in of electron needed to power the bulb

4. the battery she uses must be able to power a torch

5. the bulb could be a torch bulb or a bulb lesser than 25 watts

What would the name be for Lead (Pb) and Phosphorus (P) bonded together?

Answers

Answer:

Lead Phosphate

Explanation:

What mass of sodium hydroxide is needed to make 0.500 L of 2.50 M NaOH ?

Answers

Answer:

50 g NaOH

General Formulas and Concepts:

Chemistry - Solutions

Reading a Periodic TableUsing Dimensional AnalysisMolarity = moles of solute / liters of solution

Explanation:

Step 1: Define

0.500 L

2.50 M NaOH

x moles of solute

Step 2: Define conversions

Molar Mass of Na - 22.99 g/mol

Molar Mass of O - 16.00 g/mol

Molar Mass of H - 1.01 g/mol

Molar Mass of NaOH - 22.99 + 16.00 + 1.01 = 40 g/mol

Step 3: Find moles of solute

2.50 M NaOH = x moles NaOH / 0.500 L

x = 1.25 moles NaOH

Step 4: Convert

[tex]1.25 \ mol \ NaOH(\frac{40 \ g \ NaOH}{1 \ mol \ NaOH} )[/tex] = 50 g NaOH

Step 5: Check

We are given 3 sig figs. Since our final answer has 2 sigs, there is no need to round.

You pull a sled with a package on t across a snow-covered fiat lawn. If you
apply a force of 46.8N to the sled, I accelerates at 0.75 m/s2 What is the
combined mass of the package and the sied? (Assume there is no friction

Answers

Answer:

Explanation:

Answer:

62.40kg

Explanation:

Which arrow would most likely represent the phase change that occurs when silver is poured into a mold and cools to become a solid bar?

Answers

Answer:

5

Explanation:

took test edge 2020

D. 5

got it correct on test <3

what is magnesium? why does your body need it? how much do you need (per day)? What happens if you have too much or too little of it? Which foods do you find in it? What are some facts about magnesium?

Answers

Magnesium is a nutrient that the body needs to stay healthy. if you dont get enough magnesium in your body then you could get magnesium deficiency. Symptoms of magnesium deficiency include loss of appetite, nausea, vomiting, fatigue, and weakness. Extreme magnesium deficiency can cause numbness, tingling, muscle cramps, seizures, personality changes, and an abnormal heart rhythm. The RDA for magnesium is 310–420 mg for adults depending on age and gender. Sources of magnesium are greens, nuts, seeds, dry beans, whole grains and low-fat dairy products.

random facts:

A magnesium ion is present in the chlorophyll molecule of every living green plant.

Magnesium is critically important for the human metabolic system's functioning.

what is diffusion and what is osmosis ?

Answers

Answer:

diffusion is the movement of gases from a higher concentration area to a lower concentration area

osmosis is the movement of water molecules from a higher concentration area to a lower concentration area

Diffusion is the movement of a substance from an area of high concentration to an area of low concentration.

The movement of water molecules through a selectively permeable membrane from a region of high water concentration to low water concentration is called osmosis

ILL GIVE BRAINLIST IF YOU GET IT RIGHT Which of the following is an example of gravitational potential energy?

Question 9 options:

A battery powering a radio


A flag waving in the wind


A glass jar sitting on a shelf


A ball rolling along a sidewalk

Answers

A glass jar sitting on a shelf.

If the shelf gets tipped the jar will slide off and convert to kinetic energy as gravity pulls it to land on the next level/floor

PLS HELP ASAP!!!!!! WILL GIVE BRAINLIEST!!!!!!!!!!
Write a summary paragraph for each part discussing this experiment and the results. Use the following questions and topics to help guide the content of your paragraph. Part 1 What was your hypothesis? According to your data, do you think your hypothesis was correct? (Be sure to refer to your data when answering this question.) Summarize any difficulties or problems you had in performing the experiment that might have affected the results. Describe how you might change the procedure to avoid these problems. Be sure to submit your data along with your paragraph. Part 2 What effect did the temperature have on the viscosity of the honey? (Be sure to refer to your data when answering this question.) Give at least two practical examples where knowledge of viscosity is important.

Answers

Answer:

Explanation:

Dang which subject is this history or science

14. How do mushrooms create their
own microclimates?

Answers

They create their own moisture through evaporation, which is when a liquid turns into a gas. Heat energy is used in this process, leaving the mushrooms cool and moist.

Would rust be considered a chemical or physical change? (I know the answer) Answer this first, and you will receive 20pts regardless, and will receive the "Most Brainiest." (I'm just testing you). I will correct any wrong answers. Any answer afterwards, will be for fun. :)

Answers

Answer:

pretty sure it's chemical

Answer:

Its a chemical

Explanation:

Pure water boils at 100°C.

What happens to the water particles when water boils?

A They gain energy and move further apart.

B They gain energy and stay close together.

CThey lose energy and move further apart.

DThey lose energy and stay close together.

choose one answer correctly!​

Answers

C. They lose energy and move further apart

The boiling of pure water has been resulted in the particles gaining energy and moving away from each other. Thus, option A is correct.

The boiling can be described as the conversion of the liquid state to the gaseous state. The molecules in the gaseous space are apart from each other and have no fixed shape.

The pure water has been transferred to the gaseous state at the temperature of 100 degrees celsius. The boiling has been introduced with the addition of the energy.

The water molecules gain energy and start to vibrate. The vibrations have resulted in the change in the change in phase of the liquid with evaporation.

Thus, when pure water boils, the water particles gain energy and move away from each other. Thus option A is correct.

For more information about boiling pure water, refer to the link:

https://brainly.com/question/11372663

Can someone help me with this, I feel so sleepy right now :(

Answers

Answer:

I AM SLEEPY TOO WILL HELP TOMMOROW!

Explanation:

According to the picture above, which layer contains :

Answers

Answer:

a) layer 4

b) layer 1

Explanation:

Older the layer=older the fossils

Newer the layer=newer the fossilss

Which action causes breakers?

Answers

Answer:

hope it helps..

Explanation:

The answer is when the waves meet the shore and cause the crest to spill over the trough. This activity creates a back and forth movement of the sand which causes them to settle at a certain area under below the water.

Stoichiometry: Calculate the moles of H2 produced by .042 g Mg in the equation Mg + 2HCl > MgCl2 + H2

Answers

Answer:

Mg (s) + 2HCI2 (aq) → MgCI2 (aq) + H2 (g)

I think this is the correct answer I not a 100% sure if it is correct.

Explanation:

Guessing

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