In the following reaction, C6H6)? 2C6H6 + 15O2 12CO2 + 6H2O, how many grams of oxygen will react with 10.47 grams of benzene?

Answers

Answer 1

Answer: the answer is 27.92g . working is shown in the picture above.

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A package of aluminum foil is 63.2 yd long, 11 in. wide, and 0.00035 in. thick. If aluminum has a density of 2.70 g/cm³, what is the mass, in grams, of the foil?
Water is called the “universal solvent.” Which statement best explains this description with respect to ionic compounds?
(giving away 10 points)at what position of the earth in its orbit is it summertime in the northern hemisphere Position 2 position1 position4 position3

How do the bonds within AND between a water molecule affect the properties of water?

Answers

Water is a polar molecule, meaning the covalent bonds in it share electrons unequally. They spend more time around the oxygen, making it positive and the hydrogens negative. This helps water stick to surfaces, a property called adhesion. The hydrogens of one molecule are also attracted to the oxygens of another. This is called cohesion, and it helps water form droplets

The atomic mass of an element is calculated using the(1) atomic number and the ratios of its naturally occurring isotopes(2) atomic number and the half-lives of each of its isotopes(3) masses and the ratios of its naturally occurring isotopes(4) masses and the half-lives of each of its isotopes

Answers

The atomic mass of an element is calculated using its masses and the ratios of its naturally occurring isotopes. The answer is number 3. The rest of the choices do not answer the question above.

Answer:

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A sample composed only of atoms having the same atomic number is classified as(1) a compound (3) an element
(2) a solution (4) an isomer

Answers

A sample composed only of atoms having the same atomic number is classified as " element".

What is element?

A pure substance made up entirely of atoms with almost the same number of protons in respective nuclei was known as an element.

What is atoms?

Atoms are "the fundamental building components of matter," according to Wikipedia. It is the lowest fundamental unit of matter which thus possesses chemical element qualities.

A sample composed only of atoms having the same atomic number is classified as " element".

Therefore, the correct answer will be option (3).

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A sample composed only of atoms having the same atomic number is classified as element.

5. Which of the following is a synthesis reaction? (2 points)2H2 + O2 → 2H2O
2H2O2 → 2H2O + O2
CaCO3 → CaO + CO2
2AgNO3 + Zn → 2Ag + Zn(NO3)2

Answers

Answer: The correct answer is $2H_2+O_2\rightarrow 2H_2O$

Explanation:

Synthesis reaction is defined as the reaction in which two smaller substances combine together to form a large single compound.

$A+B\rightarrow AB$

From the given options:

Option A: $2H_2+O_2\rightarrow 2H_2O$

This is a synthesis reaction and only one product is forming.

Option B: $2H_2O_2\rightarrow 2H_2O+O_2$

This is a decomposition reaction.

Option C: $CaCO_3\rightarrow CaO+CO_2$

This is a decomposition reaction.

Option D: $2AgNO_3+Zn\rightarrow 2Ag+Zn(NO_3)_2$

This is a single displacement reaction.

Thus, the correct answer is $2H_2+O_2\rightarrow 2H_2O$

Final answer:

A synthesis reaction is a chemical reaction in which two or more substances combine to form a single, more complex substance. The correct synthesis reaction from the given options is 2H2 + O2 → 2H2O.

Explanation:

A synthesis reaction is a chemical reaction in which two or more substances combine to form a single, more complex substance.

In the given options:

2H2 + O2 → 2H2O is a combination reaction (synthesis) as hydrogen and oxygen combine to form water.
2H2O2 → 2H2O + O2 is a decomposition reaction as hydrogen peroxide breaks down into water and oxygen.
CaCO3 → CaO + CO2 is a decomposition reaction as calcium carbonate decomposes into calcium oxide and carbon dioxide.
2AgNO3 + Zn → 2Ag + Zn(NO3)2 is a single displacement reaction as silver nitrate reacts with zinc to form silver and zinc nitrate.

Therefore, the correct answer is

2H2 + O2 → 2H2O

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What is the molarity of a solution of 14.0 g NH4Br in enough H20 to make 150 mL of solution?

Answers

Mass of solute = 14,0 g

Molar mass ( NH4Br ) = 14 + 1 . 4 + 80 = 98 g/mol-1

volume of the solution = 150 mL = 0,15 L

Molarity of the solution = mol/L-1

$M = (m)/(mm.V)$

$M = (14,0)/(98.0,15)$

$M = (14,0)/(14,7)$

$M = 0,952 mol/L ^(-1)$

Hope this helps!

Of all boron atoms, 19.9%% are boron-10, which have a mass of 10.01294 amu. The other 80.1% of boron atoms are boron-11 and these have a mass of 11.00931. Calculate the average atomic mass of boron.

Answers

Answer:

10.81 amu

Explanation:

The average atomic mass of Boron can be calculated as follows :

$A=19.9\%\ \text{of}\ 10.01294 +80.1\%\ \text{of}\ 11.00931\n\nA=(19.9)/(100)* 10.01294 +(80.1)/(100)* 11.00931\n\nA=10.81\ \text{amu}$

So, the average atomic mass of boron is 10.81 amu.

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