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3 years ago

Which of the following statements is true?

Chemistry

2 answers:

mote1985 [20]3 years ago

8 0

Answer:

The Periodic Table is organized in order of atomic number.

Explanation:

aksik [14]3 years ago

3 0

The Periodic Table is organized in order of atomic number.

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Nylon is an important component in many products. One step in the production of nylon is the reaction of cyclohexane with oxygen

UkoKoshka [18]

Answer:

Follows are the answer to this question:

Explanation:

pleas find the attachment file.

Formula for ΔE:

$\Delta E = \sum \text{Bond energy of recatants}- \sum \text{Bond energy of Products}$

$= 6 ( B.E_{C-C}) +12 (B.E_{C-H}) +(B.E_{o \ = \ o}) - 6(B.E_{C-C})-10(B.E_{C-H}) -( B.E_{C=0}) -2(B.E_{0-H})\\\\ = \bold{2 (B.E_{C-H}) +(B.E_{o \ = \ o}) -( B.E_{C=0}) -2(B.E_{0-H})}\\\\$

to calculate the value for ΔE put the value in above formula:

4 0

3 years ago

Which weighs more 10g of iron or 10g of water

Svet_ta [14]

Neither. They are both 10 grams so they weigh the same.

4 0

3 years ago

Read 2 more answers

Hydrogen gas, iodine vapor, hydrogen iodine are mixed in a flask and heated to 696°C. H2(g) + I2(g) ⇋ 2 HI(g) Kc = 52 at 696°C I

Anettt [7]

Answer: The equilibrium concentration of hydrogen gas is 0.0269 M

Explanation:

The chemical reaction follows the equation:

$H_2(g)+I_2(g)\rightleftharpoons 2HI(g)$

At t = 0 0.044M 0.044M 0.177M

At $t=t_{eq}$ (0.044-x)M (0.044-x)M (0.177+x)M

The expression for $K_c$ for the given reaction follows:

$K_c=\frac{[HI]^2}{[H_2]\times [I_2]}$

We are given:

$K_c=52$

Putting values in above equation, we get:

$52=\frac{(0.177+x)^2}{(0.044-x)^2}$

$x=0.0171M$

Hence, the equilibrium concentration of hydrogen gas is (0.044-x) M =(0.044-0.0171) M= 0.0269 M

7 0

3 years ago

Five solutions on how to prevent air pollution

I am Lyosha [343]

Answer:

Reduce number of trips

Avoid burning leaves

Avoid using garden equipments

Reduce the use of wood stove

Avoid gas-powered lawn.

Explanation:

7 0

3 years ago

PLEASE HELP ME!!! It would be great

kompoz [17]

The answer should be 0.5 because 6/12 is 0.5. It gives u the key equation

3 0

3 years ago