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3 years ago

Write a balanced chemical equation for the combustion of C6H12O6 in oxyegen gas

Chemistry

1 answer:

Anestetic [448]3 years ago

3 0

C6H12O6 (s) + 6O2 (g) + 6CO2 (g) + 6H2O(l)

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Describe the properties of oobleck when it behaves like a solid and a liquid.

PSYCHO15rus [73]

Answer:

hope it's help you ok have a good day

7 0

3 years ago

How many atoms of nitrogen and oxygen are present in a molecule of dinitrogen pentoxide?

Kitty [74]

Answer: 7

Explanation: oxygen has 5 atoms and nitrogen has 2. Put them together and you get 7

6 0

3 years ago

Read 2 more answers

3. Crystalline structural unit of barium metal is a body-centered cubic cell. The edge length of the unit cell is 5.02x10-8 cm.

tiny-mole [99]

Answer:

The Avogadro's number is $N_A = 6.02289 *10^{23}$

Explanation:

From the question we are told that

The edge length is $L = 5.02 * 10^{-8} \ cm= \frac{5.02 * 10^{-8} }{100} = 5.02 * 10^{-10}$

The density of the metal is $\rho = 5.30\ g/cm^3 = 5.30 * \frac{g}{cm^3} * \frac{1*10^6}{1*10^3} = 5.30 *10^3kg/m^3$

The molar mass of Ba is $Z = 137.3 \ g/mol = \frac{137.3}{1000} = 0.1373 \ kg / mol$

Generally the volume of a unit cell is

$V = L^3$

substituting value

$V = [5.02 *10^{-10}]^3$

$V = 1.265*10^{-28}\ m^3$

From the question we are told that 68% of the unit cell is occupied by Ba atoms and that the structure is a metal which implies that the crystalline structure will be (BCC),

The volume of barium atom is

$V_a = \frac{V}{2} * 0.68$

substituting value

$V_a = \frac{ 1.265*10^{-28}}{2} * 0.68$

$V_a = 4.301 *10^{-29} \ m^3$

The Molar mass of barium is mathematically represented as

$Z = N_A V_a * \rho$

Where $N_A$ is the Avogadro's number

$N_A = \frac{ Z}{ V_a * \rho}$

substituting value

$N_A = \frac{ 0.1373}{ 4.301*10^{-29} * 5.3*10^{3}}$

$N_A = 6.02289 *10^{23}$

4 0

2 years ago

Man's scientific theories are often in correct because his knowledge is

Alik [6]

Answer:

Incomplete

Explanation:

I wouldn't say that a scientific theory is wrong.

It is the best we have at the time, based on all available knowledge .

As each new discovery is made, scientists modify the theory to fit the new knowledge.

The scientific method is a never-ending process.

8 0

2 years ago

What are compounds that react with acids and bases to make certain colors?

finlep [7]

Those would be called indicators , simply google them and you should find many. I'll leave some examples "bromophenol blue" "Methyl red" and "phenol red".

4 0

3 years ago