Perform the following
mathematical operation, and
report the answer to the correct
number of significant figures.
3.47 x 6.7 = [?]

Perform The Followingmathematical Operation, Andreport The Answer To The Correctnumber Of Significant

Answers

Answer 1

Answer:

[tex]3.4 \times 6.7 = 23.249[/tex]

Answer 2

Answer:

23.25

Explanation:

3.47x6.7= 23.249= 23.25 / 23.


Related Questions

Write a balanced equation for the complete combustion of propane gas, C3H8, with
oxygen, O2, to form carbon dioxide, CO2, and water, H2O?

Answers

Answer:  

Explanation:

Balancing Carbon atoms on the right side,

Balancing Hydrogen atoms on the right side,

Balancing Oxygen atoms on the left side,

The reactants are on the left side of the reaction:

Propane and oxygen are the reactants.

The products are on the right side of the reaction:

Carbon dioxide and water are the products.

forgive me if im incorrect or leaving things out

People should be more concerned about the global water budget than the local water budget.
True
Or false

Answers

true because you shouldn’t be selfish and share with the world

The balanced chemical equation below shows the reaction between nitrogen (N2) and hydrogen (H2) to form ammonia (HN3).

N2 + 3H2 → 2NH3

If 10.0 grams of nitrogen reacts with hydrogen to form 12.0 grams of ammonia, then how many grams of hydrogen were used in this

Answers

Answer:

hope u umderstood ! if explanation needed then conta t

Nitrogen and hydrogen react to form ammonia and is a combination reaction. The grams of hydrogen used in the reaction with nitrogen to form ammonia is 2.0 grams.

What is mass in grams?

Mass is the weight or the product of the volume and density of the substance. It can be calculated as, [tex]\rm volume \times density.[/tex]

Given,

Mass of nitrogen = 10.0 grams

Mass of ammonia = 12.0 grams

Mass of hydrogen = x gram

Solving for x:

[tex]\begin{aligned}\rm 10 + x &= 12\\\\\rm x &= 12.0 - 10.0\\\\&= 2.0 \;\rm grams\end{aligned}[/tex]

Therefore, 2.0 grams of hydrogen is required to react with 10.0 grams of nitrogen to produce 12.0 grams of ammonia.

Learn more about mass here:

https://brainly.com/question/6699336

Through photosynthesis, plants use the energy in sunlight to convert water and
carbon dioxide into sugar and oxygen. Has a chemical or physical change occurred?
Explain your answer.

Answers

Answer:

chemical change occured

How many grams are there in 2.5 moles of C2H5OH?

Answers

2.5 mol C2H5OH x (46.0g C2H5OH / 1 mol C2H5OH) = 115g C2H5OH

2.5 moles of  C2H5OH would be 115.175 grams of the same compound.

Recall that:

Mole = mass/molar mass

Hence,

mass = mole x molar mass

Molar mass of  C2H5OH = 46.07

Mass of 2.5 moles of  C2H5OH = 2.5 x 46.07

                                                     = 115.175 grams

More on moles and mass can be found here: https://brainly.com/question/2076834?referrer=searchResults

How many atoms are in 17 moles of O?

Answers

Answer:

67

Explanation:

Which statement is true about this fuel cell?
It is self contained like a battery.
It continually needs to be charged.
It has an electrolyte that acts as a salt bridge.
It does not require the input of fuels from an outside source.

Answers

The statement which is true about the fuel cell is that It has an electrolyte that acts as a salt bridge.

What is Fuel cell ?

A fuel cell is an electrochemical cell that converts the chemical energy of a fuel (often hydrogen) and an oxidizing agent (often oxygen) into electricity.

The fuel cell has an electrolyte that acts as a salt bridge.

As electrolytes are nothing but the salts which are present at the inner side of the U-Tube considered as Salt bridge present in fuel cell.

In this way, Fuel cell has electrolyte that acts as a salt bridge.

learn more about salt bridge here ;

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The double bonds in an aromatic ring are not fixed in position as in an alkene. The electrons are considered to be ____ and are delocalized around the ring.

Answers

Answer: The double bonds in an aromatic ring are not fixed in position as in an alkene. The electrons are considered to be in conjugation and are delocalized around the ring.

Explanation:

Chemical compounds that have conjugated planar ring systems where there are delocalized pi-electron clouds are present in place of individual alternate and single bonds.

This means that electrons present in a double bond of alkene are in conjugation.

Therefore, we can conclude that the double bonds in an aromatic ring are not fixed in position as in an alkene. The electrons are considered to be in conjugation and are delocalized around the ring.

Answer:

In resonance

Explanation:

Got it right on Acellus.

Please help me with this homework

Answers

Answer:

Explanation:

Melting example:

Melting chocolate

Freezing example:

Freezing water to ice

Boiling example:

Water boiled in a kettle

Condensation example:

Steam from your bath/shower condenses onto the mirror

Hope this helps :)

What is the formula for the compound formed by Ca2+ and N3-?
NCa
Ca3N2
O Can
O N2Caz
O N3Ca2
O CazN3

Answers

It’s Ca3N2 I hope this is helpful

If 2 moles of salt is dissolved to form 1 liter of solution, what is the molarity of the solution?

Answers

Answer:

2M

Explanation:

Molarity refers to the molar concentration of a solution. It can be calculated by using the formula as follows:

Molarity (M) = number of moles (n) ÷ volume (V)

Based on the information provided in this question, 2 moles of salt is dissolved to form 1 liter of solution. This means that n = 2mol, V = 1L

Molarity = n/V

Molarity = 2/1

Molarity = 2M

On a phase change diagram, such as a heating or cooling curve, the horizontal line
indicates a time when the temperature of the substance is staying the same.
True or false

Answers

It’s true ok also an writting this cause I need 20 words

What controls the movement of material between the inside of the cell and the outside world?

Group of answer choices

Nucleus

Cell membrane

Cytoplasm

Vacouoles

Answers

The answer is Cell membrane

Answer:

Cell membrane

Explanation:

C + O2 CO2
1. When solid carbon reacts with 64.0 g of oxygen gas to form carbon dioxide, no carbon or oxygen is left over. How much carbon is reacted if 88.0 grams of carbon dioxide is produced? A 24.0 g B 64.0 g C 88.0 g D 112.0 g

Answers

no. of mole = 88 ÷ ( 12 + 2(16) )

= 2 mol

mass of C = 2 × 12

= 24g ( A )

heelp me pls :P ( rando words )

Answers

The answer the neutral atoms

PLEASE HELP ME, I AM DESPERATE

Answers

Explanation:

for the first one go to the website mathaway and just put the equation in and you would press graph.

given the equation, N2H4 + N2O4 -> N2 + H2O, how many moles of N2)=O4 are needed to react with 3.5 moles of N2H4

Answers

Answer:

Explanation:

I think you mean

2N2H4 + N2O4 ==> 3 N2 + 4H2O

The equation says that for Every mol of N2O4, you need 2 moles of N2H4.

1/2 = x/3,5       Multiply both sides by 3.5

3.5*1 / 2 = x

1.75 = x

Therefore you need 1.75 moles N2O4 are needed for 3.5 moles of N2H4

Please help me with this

Answers

Answer:

no se

ablar inglés losiento princesa

por que todo me sale en inglés?

Explicación?:

Indicate which aqueous solution has the highest boiling point elevation. (Kb for water = 0.512 °C/m)

Answers

Answer:

carbon tetrachloride

Explanation:

Boiling point elevation of a liquid or a compound is defined as the boiling point of a liquid that is that will be higher when some other other compound is added. It means that the solution has a higher boiling point than the solvent. When a non volatile solute is added to the pure solvent like water, it results in the highest boiling point elevation.

Carbon tetrachloride, Kb = 5.03°C/m shows highest boiling point elevation when it is used to make a 0.10 m non - electrolyte solution.  

3. Some of the reagents used in this lab are easily confused: such as persulfate (S208?)

and thiosulfate (S20:2). A student inadvertently switched these reagents, adding the

persulfate to beaker A and thiosulfate to beaker B. How would this affect the results?

What would the student observe with respect to the mixture in beaker A?

Answers

Answer:

Different compounds are formed.

Explanation:

Due to this switching of chemicals, the result of both beakers will be different because the chemicals react with the different solution in the beaker. The composition of both chemicals are different from one another which produces different compounds or products when they are mixed with the solution so we can say that this switching of chemicals will definitely affect the results of the experiment. The student will observe the formation of different compounds and different colour of the solution.

If you have 730 moles of a gas at 304 Kelvin in a 4.50 Liter container what
is the pressure of that eas in atmospheres?

Answers

Answer:

4046atm

Explanation:

For this question you can use the ideal gas law,

[tex]PV=nRT[/tex]

Where P is pressure, V is volume, n is moles of substance, R is the constant, and T is the temperature.

Because of the units given, R will equal .08026[tex]P=4046 atm[/tex]

Rearrange the equation to solve for pressure:

[tex]P=\frac{nRT}{V}[/tex]

Then, plug in the values (I'll be excluding units for simplicity, but they all cancel out for pressure in atm):

[tex]P=\frac{(730)(.08206)(304)}{4.5}[/tex]

This will give you:

[tex]P=4046atm[/tex]

I need help with this question please asap I would really appreciate it

Answers

Answer:

I think c

Explanation:

A rigid container of oxygen has a pressure of 3.5 atm and a temp of 713K, what is the pressure at 273K?

Answers

Answer:

Explanation:

This is most easily solved using Gay-Lussac's Law, which relates temperature and pressure as follows:

[tex]P_{1} T_{1} =P_{2} T_{2}[/tex]

According to Gay-Lussac's law, the pressure of oxygen gas at 273 K is 1.34 atmospheres.

Gay- Lussac's law is defined as a gas law which states that the pressure which is exerted by the gas directly varies with its temperature and at a constant volume.The law was proposed by Joseph Gay-Lussac in the year 1808.

The pressure of the gas at constant volume reduces constantly as it is cooled till it undergoes condensation .Given by P₁/T₁=P₂/T₂ which on substitution gives P₂=3.5×273/713=1.34 atm.

Thus, the pressure of oxygen gas at 273 K is 1.34 atmospheres.

Learn more about Gay-Lussac's law,here:

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how many years can carbon dioxide stay in the atmosphere formed

Answers

Once it's added to the atmosphere, it hangs around, for a long time: between 300 to 1,000 years. Thus, as humans change the atmosphere by emitting carbon dioxide, those changes will endure on the timescale of many human lives.

What is the relationship between atmospheric
pressure and vapor pressure at the boiling point of
a liquid?

a. The atmospheric pressure is equal to the
vapor pressure at the boiling point.

b. The atmospheric pressure is less than the
vapor pressure at the boiling point.

C. The atmospheric pressure is greater than
the vapor pressure at the boiling point.

d. Both Band C are correct.

Answers

correct me if I’m wrong but I believe that the answer A

What change releases energy.

Answers

Answer:

When a substance changes states, it requires energy when it goes to a higher energy state and releases energy when it goes to a lower energy state. Gas has a higher energy than liquid and liquid has a higher energy than solid. The three state changes from a lower energy to a higher energy are: solid to liquid: fusion. liquid to gas: vaporization

help asap i don’t understand at all lol

Answers

Answer:

a, to reduce air bubbles

Explanation:

all its asking, is what is the purpose of the cover. and a is the most reasonable out of all of them, even though none of them make any sense.

to reduce air bubbles

Can mixtures and compounds be separated into their elements? If so which?

Answers

Answer:

The individual components of a mixture can be physically separated from each other. Chemical compounds are very different from mixtures: The elements in a chemical compound can only be separated by destroying the compound.

Which of the following is a nonrenewable energy source that comes from the remains of dead
organisms?
a. Gasoline
b. Solar power
c. Geothermal heat
d. Hydroelectricity

Answers

Answer:

Gasoline

Explanation:

Coal, oil, and gas are all fossil fuels made from the remaisn of dead organisms.

Ammonia (NH3) dissolved in water is heated in a beaker. If initially there had been 60 grams dissolved in 100 grams of water, what would happen if the temperature reached 90℃ and why? A. The solution would become supersaturated and the ammonia would all remain dissolved . B. The solution would become saturated but the amount of ammonia dissolved would remain the same . C. about 50 more grams of ammonia would be able to dissolve as the solution has become unsaturated . D. about 50 grams of ammonia would come out of solution as the temperature caused the solubility to decrease .

Answers

Answer:

C. About 50 more grams ammonia would be able to dissolve as the solution has become unsaturated

Explanation:

From the question, we have;

The mass of ammonia dissolved in water = 60 grams

The mass of the water solvent which dissolves the ammonia = 100 g

The temperature to which the ammonia water solution is raised = 90°C

Therefore, given that the solubility of a solute in a solvent increases with temperature, when the temperature is raised, we have, that the solution will more unsaturated and will be able to dissolve more ammonia, therefore, option 'C' is the most correct option that corresponds with the relationship of temperature and solubility

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