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3 years ago

Which of the following statements is true?

Chemistry

2 answers:

vaieri [72.5K]3 years ago

7 0

I think D?? I apologize if not-check in other answers to be sure ^^

Diano4ka-milaya [45]3 years ago

6 0

Answer:

Explanation:

the molecules are to far apart in fluids I took this test and got 100

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Calculate the density of a water bottle with a mass of 4 grams and a volume of 100ml.

lilavasa [31]

Answer:

density is 40

Explanation:

6 0

3 years ago

The activation energy for a reaction is the energy difference between what two components of a reaction?

lora16 [44]

Answer:

Activation Energy is the Energy that Must be Overcome/reached by Reactants for Products to be formed.

I'd go with the 2nd Option.

4 0

3 years ago

The activation energy for the reaction NO2 (g )+ CO (g) ⟶ NO (g) + CO2 (g) is Ea = 218 kJ/mol and the change in enthalpy for the

madreJ [45]

Answer:

$470\frac{KJ}{mol}$

Explanation:

The activation energy represents the energy barrier that reagents must pass to transform into products (or products to transform into reagents in a reverse reaction)

For any reaction, the change in enthalpy is related to the activation energy by the equation

$\Delta H =E_{a\ direct}-E_{a\ reverse}$

So, the activation energy for the reverse reaction is

$E_{a\ reverse}=E_{a\ direct}-\Delta H =218 \frac{KJ}{mol} - (-252)\frac{KJ}{mol}=470\frac{KJ}{mol}$

4 0

3 years ago

Can someone please help me

Nezavi [6.7K]

Answer:

I would say w is the answer

4 0

3 years ago

Read 2 more answers

Determine the number of significant in 400

Leya [2.2K]

Answer:

400 or 4x102 indicates only onesignificant figure. (To indicate that the trailing zeros are significant a decimal point must be added. 400. has threesignificant digits and is written as 4.00x102 in scientific notation.) Exact numbers have an infinite number of significant digits but they are generally not reported.

6 0

3 years ago