Mr. Watson's students brought him a cake on his birthday because he was their favorite teacher. Before he blew out the candles,

Chemistry

2 answers:

katovenus [111]3 years ago

7 0

Answer: OB The candles are able to burn

Explanation: OA The cnadles are thin is a description, OC The candles are 10 cm tall is descriptive , OD The candles are blue is descriptive

Murrr4er [49]3 years ago

3 0

Answer:

Explanation:

The candles are able to burn

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CH=C-CH=CH– CH = CH, what is the name of this molecule?

Kobotan [32]

Answer:

pent-3-ene-1-yne

Explanation:

1 2 3 4 5

CH ≡ C - CH = CH - CH3

IUPAC name : Pent-3-ene-1-yne

3 0

2 years ago

Use bond energies to calculate δhrxn for the reaction. n2(g)+3cl2(g)→2ncl3(g)

Jobisdone [24]

ΔHrxn = ΣδΗ(bond breaking) - ΣδΗ(bond making)

Bond enthalpies,
N ≡ N ⇒ 945 kJ mol⁻¹
N - Cl ⇒ 192 kJ mol⁻¹
Cl - Cl⇒ 242 kJ mol⁻¹

According to the balanced equation,
ΣδΗ(bond breaking) = N ≡ N x 1 + Cl - Cl x 3
= 945 + 3(242)
= 1671 kJ mol⁻¹
ΣδΗ(bond making) = N - Cl x 3 x 2
= 192 x 6
= 1152 kJ mol⁻¹

δHrxn = ΣδΗ(bond breaking) - ΣδΗ(bond making)
= 1671 kJ mol⁻¹ - 1152 kJ mol⁻¹
= 519 kJ mol⁻¹

3 0

3 years ago

Read 2 more answers

The rate of a certain reaction is given by the following rate law: rate Use this information to answer the question below. At a

AleksAgata [21]

Answer:

Initial rate of the reaction when concentration of hydrogen gas is doubled will be $3.2\times 10^6 M/s$ .

Explanation:

$N_2+3H_2\rightarrow 2NH_3$

Rate law says that rate of a reaction is directly proportional to the concentration of the reactants each raised to a stoichiometric coefficient determined experimentally called as order.

Initial rate of the reaction = R = $4.0\times 10^5 M/s$