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3 years ago

Choose all the answers that apply.

Chemistry

1 answer:

AnnZ [28]3 years ago

8 0

Answer:

accepting your faults

seeing exercise as a treat

looking at your ultimate goal

Explanation:

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2. Bart finds a solid shiny

notsponge [240]

Answer:

1. Density of metal object = 11000 kg / m3.

2. Could the object be gold = No,because the density of gold is 19300 kg / m3.

7 0

3 years ago

Calculate the enthalpy of reaction for 2CO + O2 → 2CO2. given the following bond energies:

kotegsom [21]

Answer : The enthalpy change for the reaction is 1043 kJ/mol.

Explanation :

The given chemical reaction is:

$2CO+O_2\rightarrow 2CO_2$

As we know that:

The enthalpy change of reaction = E(bonds broken) - E(bonds formed)

$\Delta H=[(2\times B.E_{C\equiv O})+(1\times B.E_{O\equiv O})]-[2\times B.E_{C=O}]$

Given:

$B.E_{C\equiv O}$ = 1074 kJ/mol

$B.E_{O\equiv O}$ = 499 kJ/mol

$B.E_{C=O}$ = 802 kJ/mol

Now put all the given values in the above expression, we get:

$\Delta H=[(2\times 1074kJ/mol)+(1\times 499kJ/mol)]-[2\times 802kJ/mol]$

$\Delta H=1043kJ/mol$

Therefore, the enthalpy change for the reaction is 1043 kJ/mol.

7 0

3 years ago

Drag the tiles to the correct locations. Each tile can be used more than once, but not all tiles will be used. One or more locat

Nata [24]

Answer:

Answer is on the foto.

Explanation:

Complete Lewis formula is on picture 2

8 0

3 years ago

Read 2 more answers

If you wanted to find a sample of fermium, which has an atomic number 100, where would you look?

sergeinik [125]

The answer would be B: In the Earth’s atmosphere!.

Hope this helps,

7 0

3 years ago

Is vinegar in water a true solution, suspension or colloid

nata0808 [166]

Answer:

Solution

Explanation:

Solution

4 0

3 years ago