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4 years ago

The major difference between a 1s orbital and a 2s orbital is that

Chemistry

1 answer:

Neko [114]4 years ago

5 0

Answer:

The 2s orbital is at a higher energy level.

Explanation:

1s and 2s are the sub-orbitals that are located in an atom. They are nearest to the nucleus and are found on the s sub-orbital. The difference between 1s and 2s is the difference in their level of energy. 1s has low energy as compared to 2s. 1s orbital has the lowest energy because it is located closed to the nucleus. 2s orbital has higher energy than 1s because it's orbit is larger than 1s.

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I need help on science I have a 89 on my report card for science and I need to get it to a 98

Hunter-Best [27]

Sorry but I only know a few
17- decomposers
18- decomposition
21- 10% is lost so 90%

8 0

4 years ago

What are some pros and cons of endoskeletons and exoskeletons

xenn [34]

Endoskeleton
Pros: bones do not get broken so easily
If bones broken, can heal more quick since they are inside with good blood and nutrient supply

Cons: flesh can easily get damage
no shedding of endoskeletons, so no new skeleton cannot if injuried.

Change those up for exoskeletons.. pros for cons and cons for pros

3 0

3 years ago

Read 2 more answers

In another experiment, a 0.150 M BF4^-(aq) solution is prepared by dissolving NaBF4(s) in distilled water. The BF4^-(aq) ions in

Ilia_Sergeevich [38]

Answer:

A) Forward rate = 1.1934 × 10^(-4) M/min

B) I disagree with the claim

Explanation:

A) We are told that [HF] reaches a constant value of 0.0174 M at equilibrium.

The reversible reaction given to us is;

BF4-(aq) +H20(l) → BF3OH-(aq) + HF(aq)

From this, we can see that the stoichiometric ratio is 1:1:1:1

Thus, concentration of [BF4-] is now;

[BF4-] = 0.150 - 0.0174

[BF4-] = 0.1326 M

From the rate law, we are told the forward rate is kf [BF4-].

We are given Kf = 9.00 × 10^(-4) /min

Thus;

Forward rate = 9.00 × 10^(-4) /min × (0.1326M)

Forward rate = 1.1934 × 10^(-4) M/min

(B) The student claims that the initial rate of the reverse reaction is equal to zero can't be true because at equilibrium, rates for the forward and reverse reactions are usually equal.

Thus, I disagree with the claim.

3 0

3 years ago

How many liters of hydrogen gas I needed to react with CS2 to produce 2.5 L of CH4 At STP

olchik [2.2K]

Answer:

9.8 L

Explanation:

The reaction that takes place is:

4H₂(g) + CS₂(g) → CH₄(g)+ 2H₂S(g)

At STP, 1 mol of any gas occupies 22.4 L.

We calculate how many moles are there in 2.5 L of CH₄ at STP:

2.5 L ÷ 22.4 L/mol = 0.11 mol CH₄

Then we convert CH₄ moles into H₂ moles, using the stoichiometric coefficients of the reaction:

0.11 mol CH₄ * $\frac{4molH_2}{1molCH_4}$ = 0.44 mol H₂

Finally we calculate the volume that 0.44 moles of H₂ would occupy at STP:

0.44 mol * 22.4 L/mol = 9.8 L

8 0

3 years ago

How can the hemlock woolly upset natural ecosystem?

ale4655 [162]

Answer:

The HWA attacks eastern hemlock trees in forests and ornamental hemlock trees found in our residential landscaping. It feeds on the hemlock trees' young twigs by sucking the sap, causing their buds to die and needles to dry out and drop from the plant prematurely i think

hope i helped!!

7 0

3 years ago